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    Author's Accepted Manuscript

    A Preliminary Investigation of the Role of Psychological Inflexibility in Academic Pro-

    crastination

    Debra M. Glick, Daniel J. Millstein, Susan M.Orsillo

    PII: S2212-1447(14)00026-X

    DOI:   http://dx.doi.org/10.1016/j.jcbs.2014.04.002Reference: JCBS46

    To appear in:   Journal of Contextual Behavioral Science

    Received date: 16 May 2013Revised date: 1 November 2013Accepted date: 7 April 2014

    Cite this article as: Debra M. Glick, Daniel J. Millstein, Susan M. Orsillo, APreliminary Investigation of the Role of Psychological Inflexibility in AcademicProcrastination, Journal of Contextual Behavioral Science,  http://dx.doi.org/10.1016/j. jcbs.2014.04.002

    This is a PDF file of an unedited manuscript that has been accepted forpublication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, andreview of the resulting galley proof before it is published in its final citable form.Please note that during the production process errors may be discovered whichcould affect the content, and all legal disclaimers that apply to the journalpertain.

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    A Preliminary Investigation of the Role of Psychological Inflexibility in Academic

    Procrastination

    Debra M. Glick (corresponding author), Daniel J. Millstein, and Susan M. Orsillo

    Suffolk University

    41 Temple Street

    Boston, MA 02114

    [email protected]

    617-824-0336

    Running Head: PSYCHOLOGICAL INFLEXIBILITY AND ACADEMIC

    PROCRASTINATION

    A Preliminary Investigation of the Role of Psychological Inflexibility in Academic

    Procrastination

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    Abstract

    Estimates of the prevalence of academic procrastination are troublesome given the

    negative associations among procrastination, academic performance, and psychological and

     physical well-being. Multiple theories aimed at understanding factors that cause and maintain

     procrastination have been proposed, but none fully account for this problematic behavior. We

    hypothesize that procrastination can be understood as reflecting a state of psychological

    inflexibility, characterized by several processes, including experiential avoidance (i.e., attempts

    to avoid or escape from unpleasant internal experiences), diminished present moment awareness

    (i.e., diminished mindfulness), and difficulty articulating and engaging in valued activities.

    The goal of the current studies was to explore the potential association between

     psychological inflexibility and procrastination. Two samples of students completed measures of

    trait procrastination, trait anxiety, and psychological flexibility. As predicted, procrastination was

     positively associated with anxiety and negatively associated with psychological flexibility. In

    addition, psychological inflexibility added to the prediction of procrastination over the

    contribution of trait anxiety. Implications for increased understanding of, and interventions for,

     procrastination are discussed.

    KEYWORDS: Academic procrastination; Psychological flexibility; Experiential avoidance;

    Mindfulness; Acceptance; Academic values

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    A Preliminary Investigation of the Role of Psychological Inflexibility in Academic

    Procrastination

    Procrastination is prevalent among students in higher education, with estimates that

    college students engage in this behavior between 30-60 percent of the time (Rabin, Fogel &

     Nutter-Upham, 2010). Moreover, it has been suggested that graduate students procrastinate on

    academic tasks even more frequently than do undergraduate students (Onwuegbuzie, 2000).

    This high rate of procrastination is of concern given its adverse consequences on academic

     performance, physical health, and psychological well-being. Procrastination is negatively

    correlated with final overall course grades, (Steel, Brothen, & Wambach 2001) as well as grades

    on assignments such as papers (Tice & Baumeister, 1997) and exams (Steel et al., 2001; Tice &

    Baumeister, 1997). Students who self-report more procrastination exhibit more symptoms of

     physical illness and stress, and visit the health center more than do students lower in

     procrastination (Tice & Baumeister, 1997). Specifically, procrastination is associated with

    increased stress, as well as delays in seeking medical treatment (Sirois, Melia-Gordon, & Pychyl,

    2003). Further, individuals high in trait procrastination have been shown to have weaker

    intentions to engage in health-promoting behaviors such as improving their diets or getting more

    sleep (Sirois, 2004). In addition, procrastination has been linked with poor mental health (Stead,

    Shanahan, & Neufeld, 2010), a failure to seek mental health services, (Stead et al., 2010) and

    suicide proneness (Klibert, Langhinrichsen-Rohling, Luna, & Robichaux, 2005). Given these

    adverse effects, it is not surprising that the majority of students desire to reduce their

     procrastination (Solomon & Rothblum, 1984).

    The development and provision of effective interventions for procrastination requires a

    strong, cohesive theoretical explanation of the behavior. Unfortunately, despite a recent increase

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    in scientific research, much has yet to be learned about the causes and maintaining factors of

     procrastination (Steel, 2007). One common theory is that procrastination results from an inability

    to manage time (e.g., Burka & Yuen, 1983) and many of the most popular interventions for

     procrastination focus on increasing time management skills (e.g., Levrini & Prevatt, 2012).

    Although a meta-analysis provides some support for this theory (Steel, 2007), other studies that

    more directly examined time management and academic procrastination have not revealed a

    significant relationship between the two (e.g., Ackerman & Gross, 2005; Pychyl, Morin, &

    Salmon, 2000). Moreover, there is limited empirical support for the notion that time management

    strategies decrease procrastination (Van Erde, 2003).

    Research also supports a relationship between procrastination and various unwanted

    internal experiences. Procrastination has been found to be associated with trait anxiety (e.g.,

    Solomon & Rothblum, 1984), task-related anxiety (e.g., Fritzsche, Young, & Hickson, 2003),

    and statistics anxiety (e.g., Macher, Paechter, Papousek, & Ruggeri, 2012). Moreover,

     procrastination has been linked with several constructs that involve intolerance or fear of

    unwanted internal experiences such as frustration intolerance (e.g., Dryden 2012), fear of

    negative evaluation (e.g., Bui, 2007), and fear of failure (e.g., Beck, Koons, & Milgrim, 2000).

    With regard to fear of failure, the relationship with procrastination was highest for people with

    low perceived competence, whereas those with higher perceived competence were more likely to

     begin working on tasks ahead of time (Haghbin, McCaffrey, & Pychyl, 2012). One possible

    explanation for these findings could be that some individuals procrastinate in an attempt to avoid

    a variety of aversive experiences such as fear, anxiety, and self-evaluative, anxiety-provoking

    thoughts. Support for this notion comes from a series of studies suggesting that procrastination

    may serve an emotion regulatory function (Sirois & Pychyl, 2013).

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    Although engaging in pleasant leisure activities and taking breaks can be an effective

    way of dealing with academic stress, research demonstrates that students who pursue these

    activities as a way to enhance mood and avoid discomfort experience a paradoxical increase in

    distress (e.g., Patry, Blanchard & Mask, 2007; Pychyl, Lee, Thibodeau, & Blunt, 2000). Further,

    students appear to be more likely to procrastinate when they believe they have the ability to

    impact (or control) their mood. Tice and colleagues (2001) demonstrated lower levels of

     procrastination among students who were led to believe that their mood was temporarily fixed

    than those who were led to believe their mood was changeable. This finding suggests that

    students who accept that they are unable to change or control their internal experiences may be

    less likely to procrastinate.

    This model of procrastination is consistent with the more general theory of psychological

     problems proposed by Hayes and colleagues (1996; 1999; 2012). Hayes et al (1996) initially

     proposed that experiential avoidance (EA), an unwillingness to remain in contact with certain

     private experiences (e.g. thoughts, emotions, physical sensations) accompanied by

    counterproductive or harmful attempts to alter or avoid these experiences,  was a pathological

     process underlying many forms of psychopathology. These processes have become further

    specified and currently the term psychological inflexibility, defined by six key psychological

     processes (i.e., the “hexaflex” model; experiential avoidance, cognitive fusion, dominance of the

    conceptualized past or future, attachment to the conceptualized self, lack of values clarity, and

    unworkable action/inaction) is used to describe the model (Hayes, 2004). The hexaflex model of

     psychological inflexibility can be further divided into two, somewhat overlapping processes

    (Ciarrochi, Bilich, & Godsell, 2010). The first includes experiential avoidance and low

    mindfulness (experiential avoidance, cognitive fusion, dominance of the conceptualized past or

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    future, attachment to the conceptualized self) whereas the second involves a lack of clarity and

    commitment to personal values (lack of values clarity, unworkable action/inaction, dominance of

    the conceptualized past or future, attachment to the conceptualized self). A growing literature

    supports the notion that psychological inflexibility is related to greater levels of depression,

    anxiety, stress, and overall psychological distress (e.g., Bond et al., 2011; Chawla & Ostafin,

    2007). Moreover, there is mounting evidence for the efficacy of Acceptance and Commitment

    Therapy (ACT) and other acceptance-based behavioral therapies aimed at enhancing

     psychological flexibility in addressing a wide range of psychological problems. The goal of the

    current study was to explore the potential association between psychological inflexibility and

     procrastination. Specifically in two separate samples of students, we examined whether

    experiential avoidance, diminished mindfulness and low academic values would contribute to the

    variance in procrastination over and above the previously demonstrated contribution of trait

    anxiety.

    One study has already established a relationship between procrastination and

    mindfulness, as measured by two of the four scales of the Kentucky Inventory of Mindfulness

    Skills (KIMS; Baer, Smith, & Allen, 2004), the Mindful Attention Awareness Scale (MAAS;

    Brown and Ryan 2003) and a 3-point scale measuring the extent to which participants practiced

    mindfulness in a given week (Sirois & Tosti, 2012). Despite its cross-sectional design, this study

    also found preliminary evidence that mindfulness mediates the effects of procrastination on

    stress and health.

    We hope to replicate and expand on this study by assessing the relationship between

    mindfulness and academic procrastination in the larger context of the model of psychological

    inflexibility proposed by Hayes and colleagues (1996; 1999; 2004; 2012). If measures of some

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    of the key psychological processes thought to underlie psychological inflexibility are associated

    with procrastination, this finding may have some implications for the use of ACT and other

    ABBTs as interventions for this problematic behavior.

    Study 1 Method

    Participants

    Participants in this study were 258 undergraduate psychology students attending a large,

    urban university in the Northeast. The sample ranged in age from 18 to 26 ( M  = 19.51, SD =

    1.77) and was comprised of 72% women (n = 185). Seventy-four percent of participants self-

    identified as White (Non-Hispanic), 7% as Asian/Pacific Islander, 4% as Other, 3% as

    multiracial, 2% as Black/African American, 2% as Middle Eastern, and

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    80, with high scores indicating higher levels of trait anxiety. The STAI-T has strong

     psychometric properties within student samples (Ramanaiah, Franzen, & Schill, 1983;

    Spielberger, 2010). Internal consistency for the present sample was excellent (Cronbach’s alpha

    = .89).

    Action and Acceptance Questionnaire (AAQ; Hayes, Strosahl, Wilson, Bissett,

    Pistorello, Toarmino, et al. (2004). The AAQ is a scale that was originally developed to measure

    experiential avoidance, a construct proposed to relate to psychological flexibility. However, in

    the literature it has been referred to as both a measure of experiential avoidance/acceptance and

    one of psychological flexibility (e.g., Varra, Hayes, Roget, & Fisher, 2008). Several versions of

    the measure exist, including the AAQ-II (Bond et al., 2011), which was not available at the time

    we collected our data. We used a 16-item version of the measure, which we obtained from the

    developer (Steven Hayes, personal communication, 1999). Items on this measure are rated on a

    7-point Likert-type scale from 1 ( Never True) to 7 ( Always True). The AAQ can be scored such

    that higher scores reflect more acceptance or more experiential avoidance. In the current study,

    we scored the AAQ such that higher scores reflect less experiential avoidance or higher

     psychological flexibility. The AAQ shows moderate correlations with measures of related

    constructs such as thought suppression, thought control, anxiety, and depression (see Hayes et

    al., 2004). For the present sample, Cronbach’s alpha was .65.

    Kentucky Inventory of Mindfulness Skills (KIMS; Baer, Smith, & Allen, 2004). The

    KIMS is a 39- item scale designed to measure four skills of mindfulness: Observing  – attending

    to internal and external experience, Describing  – labeling noticed phenomena, Acting with

    awareness – engaging in present moment activity without distraction, and Accepting (or

    allowing) without judgment . Items are scored on a 5-point Likert-type scale from 1 ( Never or

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    Very Rarely True) to 5 (Very Often or Always True), with higher scores indicating a greater

    degree of mindfulness. A factor analysis of the KIMS supported a four factor solution and inter-

    correlations among the scales ranged from .09 to 34 (Baer et al., 2004). Thus, individual scales,

    rather than a total score, are typically derived from the measure. In the present sample, the

    Cronbach’s alphas were .82, .84, .76, and .87 for Observing, Describing, Acting with Awareness,

    and  Accepting without Judgment , respectively.

    Academic Values Questionnaire (AVQ). The AVQ was designed for the present

    study to assess the extent to which students value academics and education, based on values as

    conceptualized in the ACT model (Hayes, Wilson, & Strosahl, 2012; Wilson & Murrell, 2004). It

    consists of five items (e.g. “Learning is personally fulfilling for me”) scored on a 5-point Likert-

    type scale from 1 (Strongly Disagree) to 5 (Strongly Agree). Scores can range from five to 25,

    with higher scores indicating greater endorsement of statements reflecting a high value placed on

    academics. Internal consistency for this scale was good (Cronbach’s alpha = .80). This measure

    was developed by reviewing values measures (e.g. Wilson, Sandoz, Kitchen, & Roberts, 2010)

    as well as measures specifically related to academics and motivation (Vallerand et al., 1992) and

    generating items that would effectively represent this construct. Although there is limited

     psychometric data available on this measure as it was developed for the current study, some

    evidence for its validity comes from other studies. For example, the AVQ moderated the

    relationship between an acceptance based behavioral therapy (ABBT) for procrastination and the

     proportion of assigned reading students completed relative to the amount they intended to read

    such that ABBT was more effective for students with higher academic values (Glick & Orsillo,

    2013). In addition, an ABBT workshop for first-year college and law school students led to

    increases in AVQ scores relative to a control group (Danitz & Orsillo, 2013).

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    Procedure

    After providing informed consent, each participant completed an online survey.

    Participants were then debriefed as to the purpose of the study.  

    Study 1 Results

    Mean scores and standard deviations on the PASS, the STAI, the AAQ, the subscales of

    the KIMS, and the AVQ are presented in Table 1. The response patterns to individual items on

    the PASS suggest that one third to one half of the students in this sample reported nearly always

    or always procrastinating on important academic tasks. Specifically, 41% of students in the

    sample reported almost always or always procrastinating on writing papers, 40% endorsed this

    level of procrastination for studying for exams, and 50% reported they almost always or always

     procrastinate on assigned reading. There were no differences in procrastination across different

    demographic groups (i.e. gender, race, school year).

    Rates of procrastination in the current sample were high, but consistent with those found

    in other student samples (e.g., Solomon & Rothblum, 1984; Onwuegbuzie, 2004) In contrast,

    trait anxiety was higher in this sample than the norms for college students (Spielberger, 1983)

    and higher than the cut-off for high anxiety used in other studies using mixed control and clinical

    samples (see Phaf & Kan, 2007). Self-reported mindfulness was roughly equivalent to that found

    among other samples of college students (e.g., Baer, Smith, & Allen, 2004). To our knowledge,

    norms for college students have not been reported for the 16-item AAQ. Finally, although the

    AVQ was designed for the present study and therefore has not been normed, the average

    suggests that participants strongly agreed with most statements, indicating that they highly

    valued academics.

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    Missing data for all variables were less than 5%. However, scores on the STAI, PASS

    and the AVQ were non-normally distributed. Given the nature of our sample (students), we did

    not expect the AVQ to be normally distributed. As the residuals of this variable were normally

    distributed (an assumption for multiple regression), we used the untransformed variable in

    subsequent analyses. In contrast, the skewness of the STAI and the PASS may have been

    impacted by the presence of outliers. After examining boxplots (Williamson, Parker, &

    Kendrick, 1989) we removed 21 participants from subsequent analyses. We also conducted

    square root transformations (Tabatchnick & Fidell, 2013), which yielded normally distributed

    variables suitable for our analyses.

    The relationship between procrastination and psychological inflexibility is apparent in the

    intercorrelations among the variables that are presented in Table 2. As expected, procrastination

    was significantly positively correlated with trait anxiety and significantly negatively associated

    with acceptance/psychological flexibility, three of the four mindfulness subscales (no

    relationship was detected between the Observe subscale of the KIMS and the PASS), and

    academic values.

    To determine whether acceptance/psychological flexibility, mindfulness, and values

    contribute to the variance in procrastination over and above the effects of anxiety, a hierarchical

    linear regression was conducted with the STAI entered in the first step, and the AAQ, the three

    subscales of the KIMS that were correlated with procrastination ( Describe, Act with awareness,

    and Accept without judgment ; the Observe subscale was dropped due to its lack of correlation

    with procrastination), and the AVQ in the second step. As expected, anxiety was significantly

    associated with procrastination (r²  ∆ = .06; p < .001). Further, the combined effects of

    acceptance/psychological flexibility, mindfulness, and academic values significantly contributed

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    to the variance accounted for in procrastination above and beyond that predicted by anxiety alone

    (r²  ∆ = .22; p < .001). Results are shown in Table 3.

    Study 1 Discussion

    Our results provide preliminary support for the relationship between procrastination and

     psychological inflexibility. Specifically, we found that procrastination is associated with lower

    acceptance/psychological flexibility, lower levels of mindfulness, and a lower degree of

    academic values. Despite the fact that the combined effect of the questionnaires chosen to

    measure psychological flexibility significantly improved the prediction of procrastination over

    anxiety, only two measures were uniquely associated with procrastination when all predictors

    were accounted for. Although we did not have a priori hypotheses about each specific measure,

    the negative association between the Act with Awareness subscale of the KIMS and

     procrastination, consistent with the findings of Sirois and Tosti (2013) suggest that a tendency

    toward mindless, automatic behavior in daily life could play a unique role in procrastination. The

    relationship between the Describe subscale of the KIMS, which measures the extent to which

    individuals acknowledge and label their experience, and procrastination, was not examined by

    Sirios and Tosti (2013). However, this aspect of mindfulness has previously been demonstrated

    to be associated with the widest range of constructs (Baer et al., 2004), suggesting that the ability

    to apply word’s to one’s experience is strongly associated with psychological functioning in

    general, and perhaps procrastination in particular. It is unclear as to why the other three

    measures did not uniquely contribute to the prediction of procrastination. It may be that the

    relatively strong association between the AAQ and the Accept without Judgment subscale of the

    KIMS with the STAI diminished the unique influence of these two measures on procrastination,

     particularly given the magnitude of the bivariate correlations between the Accept without

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     Judgment subscale of the KIMS and procrastination found in the current study and in the study

    conducted by Sirios and Tosti (2013). Given that both psychological flexibility and mindfulness

    are proposed to be multifaceted constructs, more research is needed into the unique contributions

    of individual components to the development and maintenance of procrastination.

     Nonetheless, psychological inflexibility appears to contribute to procrastination over and

    above the effects of anxiety, suggesting that anxiety alone does not fully account for

     procrastination. Instead, the desire to avoid experiencing this anxiety may lead students to

    engage in procrastination. These findings fit into the broader literature on procrastination as a

    self-regulatory failure (Baumeister & Heatherton, 1996), specifically facets pertaining to task

    aversiveness and distractibility (Steel, 2007).

    Although this study provides modest support for our hypotheses, the study is limited by

    the particular questionnaires that we used to measure key psychological constructs. For

    example, the internal consistency of the AAQ in the current sample was relatively low.

    Moreover, since the completion of Study 1, more concise measures of mindfulness, informed by

    the bi-dimensional definitions proposed by Kabat-Zinn (1994) and Bishop and colleagues

    (2004), have been developed. Thus, in Study 2, we attempted to replicate the relationship

     between psychological inflexibility and procrastination a second student sample. However, in

    this study we used the revised version of the AAQ (AAQ-II) which was developed to address

    some perceived shortcomings with the previous version (e.g., problems with internal consistency

    in some samples, possible issues with item complexity, and unstable factor structure; Bond et al.,

    2011) and a more concise measure of mindfulness.

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    Study 2 Method

    Participants

    Participants in this study were 118 undergraduate and graduate students attending two

    large, urban universities in the Northeast. Graduate students were included in order to facilitate

    recruitment and contribute to the variability of the sample. The sample ranged in age from 18 to

    34 ( M  = 21.12, SD = 3.09) and was comprised of 59% women (n = 69). Seventy percent of

     participants self-identified as White, 14% as Asian, 4% as multiracial, 4% as Black/African

    American, 4% as other, and 2% declined to state their race. Twelve percent of the participants

    were freshmen, 22% sophomores, 27% juniors, 27 % seniors, and 12% graduate students. Of the

    students who provided information on their academic majors, 42% selected business, 17%

    natural sciences, 28% social sciences, 1% humanities, 8% other, and 4% were undecided or did

    not provide an answer. Participants earned course credit or were paid for their participation. 

    Materials

    As in Study 1, the PASS, STAI, and AVQ were administered. Internal consistency was

    .88, .91, and .84, respectively.

    Action and Acceptance Questionnaire II (AAQ-II; Bond et al., 2011). The AAQ-II, the

    most recent revision of the AAQ is a seven-item Likert-type self-report measure that assesses

    acceptance/psychological flexibility. The AAQ-II appears to measure the same concept as the

    AAQ-I (r  = .97) but with better psychometric consistency (Bond et al., 2011).

    Items are rated from 1 ( Never True) to 7 ( Always True) and scores range from 7-49, with

    higher scores corresponding to greater psychological flexibility. In the present sample, the

    internal consistency was excellent (Cronbach’s alpha = .90).

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    The Philadelphia Mindfulness Scale (PHL-MS; Cardaciotto et al., 2009) is a 20-item

    Likert-type scale designed to measure aspects of mindfulness. Items are rated from 1 ( Never ) to 5

    (Very Often). A factor analysis of the PHL-MS supported a two-factor solution. Thus, the

    measure contains two subscales: Awareness – continuously attending to present-moment

    experiences, and Acceptance – being aware of, open to, and compassionate towards experiences.

    In the present study the Cronbach alphas were .79 for Awareness and .91 for Acceptance.

    Procedure

    During the first two weeks of the semester, participants received an online survey as part

    of a larger study on procrastination (i.e., students were aware of the nature of the study)

    containing the PASS, STAI, AAQ, PHL-MS, and AVQ. They were later debriefed as to the

     purpose of the study.

    Study 2 Results

    Mean scores and standard deviations on the PASS, the STAI, the AAQ-II, the subscales

    of the PHL-MS are presented in Table 4. Rates of self-reported procrastination were slightly

    higher in this sample 51%, 48%, and 43% of students reporting that they procrastinate “nearly

    always” or “always” on writing papers, studying for exams, and completing assigned reading,

    respectively. Similar to study 1, procrastination scores were within the expected range for

    college students (e.g., Solomon & Rothblum, 1984; Onwuegbuzie, 2004), while anxiety ratings

    were higher than college student norms (Spielberger, 1983), and above the cutoff for high

    anxiety used in other research (e.g.Phaf & Kan, 2007). Given the high levels of anxiety reported

     by participants, the previously established relationship between anxiety and psychological

    inflexibility (e.g., Hayes et al., 2004), and the average psychological inflexibility typically

    reported by college students (Bond et al., 2011), the levels of psychological inflexibility

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    reported by the participants in the present study were surprisingly low. It is possible that students

    high in psychological inflexibility self-selected out of the study, which is a limitation associated

    with using a sample of convenience. Scores on both the Awareness and  Acceptance subscales of

    the PHL-MS were within the established range for a non-clinical college student sample

    (Cardaciotto et al., 2008).

    A series of independent samples t-tests did not reveal any group differences in

     procrastination, psychological flexibility, mindfulness, or values between graduate and

    undergraduate students or students from the two different universities. Gender, school year, and

    ethnic group were also shown to be unrelated to the aforementioned variables, and all

    undergraduate and graduate student data were analyzed together.

    As in Study 1, all variables were inspected to establish their appropriateness for the

     present analyses. We conducted a square root transformation (Tabachnick & Fidell, 2013) to fix

    the non-normal distribution of the AAQ. While the AVQ was negatively skewed, there was no

    expectation that this measure would be normally distributed among a student sample, and no

    transformations were performed. All study measures had minimal missing data (less than 5%)

    and normally distributed residuals, confirming their suitability for regression analyses.

    The relationship between procrastination and psychological inflexibility in this sample

    was similar to that found in Study 1. Procrastination was significantly positively correlated with

    trait anxiety and significantly negatively correlated with acceptance/psychological flexibility, the

     Acceptance subscale of the PHL-MS, and academic values. No relationship was found between

    the Awareness subscale of the PHL-MS and the PASS. Intercorrelations are presented in Table

    5.

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    To determine whether acceptance/psychological flexibility, mindfulness (awareness), and

    academic values contribute to the prediction of procrastination over and above the effects of

    anxiety, a hierarchical linear regression was conducted with the STAI entered in the first step,

    and the AAQ-II, the Acceptance subscale of the PHL-MS (the Awareness subscale was dropped

    due to its lack of correlation with procrastination), and the AVQ entered in the second step.

    Results showed that anxiety significantly predicted procrastination (r²  ∆ = .19; p < .001). In

    addition, the combined effects of acceptance/psychological flexibility, mindfulness, and values

    added to the prediction of procrastination above that predicted by anxiety alone approached

    significance (r²  ∆

     = .06; p < .05). None of the individual constructs entered in the second step

    uniquely contributed to the prediction of procrastination. Results are presented in Table 6. 

    Overall Discussion/Conclusions

    Given the ubiquitous nature of procrastination, and its adverse consequences on academic

     performance and emotional and physical well-being, conceptually and empirically informed,

    effective interventions are needed. An important first step in this endeavor is identifying the

     psychological processes that contribute to the cause and maintenance of procrastination. The

     present studies were a modest attempt aimed at preliminarily investigating the relationships

    among acceptance/psychological flexibility, mindfulness, and academic values and

     procrastination. Using two different samples, and different measures of the key constructs,

    results from both studies provided suggest that acceptance/psychological flexibility, some

    aspects of mindfulness, and academic values together contribute to the prediction of

     procrastination over and above the effects of anxiety. This implies that anxiety alone does not

    fully explain procrastination and that the combination of variables we used to measure

     psychological flexibility makes an incremental contribution to the model. The analytic strategy

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    used in these studies, hierarchical linear regression, is a useful approach to test theoretical

    assumptions about the ways in which specific constructs may add to the prediction of a criterion

    variable over and above that which can be accounted for by other important constructs

    (Wampold & Freund, 1987; Petrocelli, 2003). Nonetheless, these were preliminary analyses that

    would benefit from additional replication using more refined strategies.

    While not the first study to examine the link between mindfulness and procrastination

    (Sirois & Tosti, 2012), the present study did incorporate additional subscales (e.g.  Describe on

    the KIMS) and measures (e.g. the PHLMS) to help elaborate upon this relationship. The finding

    from the current study that the Observe subscale of the KIMS and the Awareness subscale of the

    PHLMS were the only mindfulness subscales not correlated with procrastination is consistent

    with the growing research suggesting the complexity of the relationship between awareness of,

    and attention to, internal experiences and psychological well-being (e.g., Baker, Holloway,

    Thomas, Thomas, & Owens, 2004; Lieschetzke & Eid, 2003; Tull, Barrett, McMillan, &

    Roemer, 2007; Tull & Roemer, 2007). One possibility for the lack of association on both of these

    subscales is the nuanced interpretation of observation and awareness, which can have different

    meanings to individuals who are not familiar with the type of attention fostered in mindfulness

     practices (Grossman, 2011). It is also possible that awareness without an accepting or

    compassionate quality may actually be detrimental, especially if awareness of internal

    experiences is associated with a judgmental stance and difficulty-regulating mood (e.g.,

    Lieschetzke & Eid, 2003; Roemer, Lee, Salters-Pedneault, Erisman, Orsillo, & Mennin, 2009).

    Unlike the other subscales, the Observe subscale of the KIMS has previously been found to be

     positively correlated with thought suppression, dissociation, absent-mindedness, and

     psychological symptoms (Baer et al., 2006). Thus, it is not surprising that we failed to find a

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    negative relationship between the extent to which participants observed, or were aware of their

    internal experiences, and procrastination. In the future, researchers may wish to add in a

    measure of self-compassion (e.g. Neff, 2003) in order to look at associations between

     procrastination and the type of attention participants report.

    The characteristics of the students in the current studies might be taken into account when

    considering the potential generalizability of our findings. Students in the current sample reported

     procrastinating between one-fifth and one-third of the time on major academic activities.

    Although these rates are somewhat alarming, they are also consistent with reports from other

    samples of college (Solomon & Rothblum, 1984) and graduate (Onwuegbuzie, 2004) students.

    Students in the current study also reported levels of mindfulness consistent with other samples

    (Baer, Smith, & Allen, 2004; Cardaciotto et al., 2009). Our sample may have been more unique

    with regard to their self-reported levels of anxiety and experiential avoidance. Participants in

     both samples reported relatively high anxiety (see Phaf & Kan, 2007) and students in Study 2

    reported relatively low levels of experiential avoidance as compared to those typically reported

     by college students (Bond et al., 2011). It is possible that the relationship between psychological

    inflexibility and procrastination could be different in college samples with different

     psychological characteristics.

    The demographic characteristics of the sample may also limit generalizability. Although

    Study 2 included a slightly more diverse sample, both were limited in their race and ethnicity

    composition. Previous research (Klassen et al., 2010) has demonstrated cross-cultural differences

    in how procrastination is perceived, with Singaporean students reporting stronger negative

     beliefs about procrastination than Canadian students. While it is possible that the present sample

    at a Western university may have similar views on procrastination, Klassen and colleagues

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    caution against generalizing their findings to students in other countries. No group differences in

     procrastination were found when we compared racial and ethnic groups in both samples, which

    is consistent with prior research on race and procrastination (Clark & Hill, 1994). However, it is

    also important to note that the current studies were not powered to detect racial or ethnic

    differences.

    The current studies are also limited on their reliance on self-report, which is especially

     problematic due to the lack of a measure of social desirability as well as the difficulty that

    individuals who engage in experiential avoidance may have with recognizing and describing

    their internal experiences. Furthermore, given that the same data collection method was used to

    collect data contemporaneously, false correlations may have emerged. The use of multiple

    assessment strategies (e.g. implicit, behavioral) over several time-points would be one potential

    solution to this issue of common method variance.

    While no moderation models were tested in this study, prior research suggests that the

    relationship between fear of failure and procrastination varies based on levels of perceived

    competence (Haghbin et al., 2012). Additionally, self-forgiveness has been identified as

    mediating the relationship between initial instances of procrastination and subsequent episodes

    (Wolf, Pychyl, & Bennet, 2010). Thus, future researchers may consider testing mediation and

    moderation models in order to more precisely clarify the associations described in this study.

    While the ACT model informed our conceptualization of psychological flexibility, the

    combination of measures used in both Study 1 and Study 2 bears clarification from a

    methodological perspective. In Study 1, the first version of the AAQ was used, which was

    initially developed to assess experiential avoidance (Hayes et al., 2004), but has been described

    as both a measure of experiential avoidance and one of psychological inflexibility (e.g., Varra,

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    Hayes, Roget, & Fisher, 2008). Thus, additional measures of mindfulness and values were

    included to more fully capture the constructs proposed to underlie psychological flexibility.

    Although these questionnaires did not fully capture all six ACT processes, other studies have

    similarly used a subset of questionnaires to measure psychological flexibility (e.g. Biglan,

    Layton, Jones, Hankins, & Rusby, 2011; McCracken, 2013; McCracken & Yang, 2008) or

    aspects of it. In Study 2, the revised AAQ (AAQ-II) was used, which is explicitly termed a

    measure of psychological flexibility and experiential avoidance (Bond et al., 2011). However,

    the items on the AAQ-II were developed to reflect the “dominance or nondominance of internal

    events over contingencies in determining values directed actions” (Bond et al., 2011) and no

    attempt was made to sample items from all six of the psychological processes proposed to reflect

     psychological inflexibility in the development of this measure. Thus, consistent with current

    other researchers in this area (e.g. Kangasniemi et al., 2013; McCracken & Velleman, 2010) we

    supplemented the AAQ-II with other measures proposed to tap into constructs related to the

     psychological flexibility mode. The use of multiple measures in both studies is also beneficial

    from a research perspective in order to help address possible inconsistencies in participant

    reporting across measures (Kazdin, 2003). Additional research is clearly needed to improve the

    measurement of the psychological processes proposed to underlie psychological flexibility.

    Another limitation of the present studies is their use of the AVQ, a measure without

    validated psychometric properties. Despite the high internal consistency demonstrated in the two

    samples and some preliminary evidence for the validity of the measures, much more data on the

    reliability and validity of the measure is needed. Also, as constructed, the measure taps into

    espoused values but it may or may not reflect enacted values.

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    The constructs examined within these studies do bear similarities with existing

    characteristics thought to be involved with procrastination. Frustration intolerance, developed in

    the context of Rational Emotive Behavior Therapy (REBT), is strongly associated with

     procrastination (Dryden, 2012; Ellis & Knaus, 1977; Harrington, 2005). Defined as a set of

    irrational beliefs that lead individuals to avoid experiencing emotional discomfort and turn away

    from these emotional disturbances rather than working through them (Ellis, 1979), frustration

    intolerance does overlap with the main idea of experiential avoidance (Hayes et al., 1996).

    Although experiential avoidance is one part of the psychological inflexibility model, the

    emphasis on pursuing freely chosen goals and valued actions helps to distinguish the latter

    (Hayes et al., 2006). Thus, while frustration may be one state that individuals who procrastinate

    attempt to control, they could also struggle with boredom, anxiety, fear of failure, and others.

    Psychological inflexibility may serve as a higher order factor that unifies these avoided internal

    experiences while also highlighting the contributions of lack of values clarity and unworkable

    action/inaction. The present studies attempt to reflect the diverse contributions to procrastination

    through measuring variables such as mindfulness and academic values, though it is important to

    acknowledge the conceptual overlap with existing constructs such as frustration intolerance.

    The present study was the first to conceptualize procrastination as a consequence of low

     psychological flexibility rather than focusing on it as a result of either  poor time management

    (e.g., Burka & Yuen, 1983), anxiety (e.g., Solomon & Rothblum, 1984), or  difficulties with self-

    regulation (e.g., Patry, Blanchard, & Mask, 2007). Despite the limitations mentioned above, the

    results support the benefits of studying psychological flexibility as a potential underlying

    mechanism of procrastination. Furthermore, if low psychological flexibility, low mindfulness,

    and a lack of connection to values are common precursors of procrastination, then treatments

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    aimed at decreasing these tendencies and increasing values-consistent living (see Hayes et al.,

    2011; Roemer & Orsillo, 2009) should help to reduce the behavior. In addition, future research

    should expand beyond academic procrastination to other areas of procrastination that are likely

    to involve emotions and psychological flexibility, including making decisions and initiating

    difficult conversations.

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    forgiveness for procrastinating can reduce future procrastination. Personality and Individual

     Differences, 48, 803-808. 

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    Table 1.

     Means, Standard Deviations, and Ranges for Study 1 Variables (N = 258)

    Total

     M (SD) Range

    PASS 32.74 (8.03) 12 - 60

    STAI 43.03 (10.86) 22 - 75

    AAQ 62.06 (10.91) 28 - 103

    KIMS

    Observe 35.67 (7.77) 12 - 57

     Describe 26.79 (5.66) 12 - 40

     Act 27.26 (5.65) 10 - 42

     Accept 29.62 (6.98) 9 - 45

    AVQ 22.06 (2.97) 5 - 25

     Note: PASS = Procrastination Assessment Scale – Students (Total Problems subscale); STAI =State-Trait Anxiety Inventory (Trait Subscale); AAQ = Acceptance and Action Questionnaire;

    KIMS – Kentucky Inventory of Mindfulness Skills (KIMS); Observe = Observe subscale of the

    Kentucky Inventory of Mindfulness Skills (KIMS); Describe = Describe subscale of the KIMS;Act = Act with awareness subscale of the KIMS; Accept = Accept without judgment  subscale of

    the KIMS; AVQ = Academic Values Questionnaire

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    Table 2.

     Intercorrelations Among Procrastination, Anxiety, Psychological Flexibility, Mindfulness, and

     Academic Values (Study 1) 

     Note: PASS = Procrastination Assessment Scale for Students; STAI = State-Trait Anxiety

    Inventory-Trait Version; AAQ = Action and Acceptance Questionnaire II; Observe = Observe subscale of the KIMS; Describe = Describe subscale of the KIMS; Act = Act with awareness 

    subscale of the KIMS; Accept = Accept without judgment  subscale of the KIMS; AVQ =

    Academic Values Questionnaire*p

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    Table 3

     Predictors of Procrastination: Anxiety, Psychological Flexibility, Mindfulness, and Academic

    Values (Study 1) 

    Variable r²∆   F∆   df Beta

    Step 1 .06** 12.91* 1,215

    STAIa 

    .24*

    Step 2 .22** 10.28* 5,210

    AAQ -.07

    Describe -.21*

    Act -.37*

    Accept -.06

    AVQ -.08

     Note: STAI = State-Trait Anxiety Inventory-Trait Version; AAQ = Action and Acceptance

    Questionnaire II; Describe = Describe subscale of the KIMS; Act = Act with awareness subscale

    of the KIMS; Accept = Accept without judgment  subscale of the KIMS; AVQ = Academic

    Values Questionnaire.Betas reported are those from the final step at which all variables were entered into the equation.

    *p < .001

    † p < .10

    a

     Square root transformed variable 

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    Table 4. 

     Means, Standard Deviations, and Ranges for Study 2 Variables (N = 118)

    Total

     M (SD) Range

    PASS 33.14 (7.64) 12 – 51

    STAI 42.14 (10.08) 21 – 70

    AAQ-2 20.87 (8.81) 8 - 48

    PHL-MS

     Aware 35.49 (5.96) 19 - 50

     Accept 30.53 (8.11) 11 - 47

    AVQ 22.48 (2.85) 5 – 25

     Note: PASS = Procrastination Assessment Scale for Students; STAI = State-Trait AnxietyInventory-Trait Version; AAQ = Action and Acceptance Questionnaire II; Aware = Awareness 

    subscale of the Philadelphia Mindfulness Scale (PHL-MS); Accept = Acceptance subscale of the

    PHL-MS; AVQ = Academic Values Questionnaire

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    Table 5.

     Intercorrelations among Procrastination, Anxiety, Psychological Flexibility, Mindfulness, and

     Academic Values (Study 2) 

     Note: PASS = Procrastination Assessment Scale for Students; STAI = State-Trait Anxiety

    Inventory-Trait Version; AAQ = Action and Acceptance Questionnaire II; Aware = Awareness subscale of the Philadelphia Mindfulness Scale (PHL-MS); Accept = Acceptance subscale of the

    PHL-MS; AVQ = Academic Values Questionnaire

    *p < .05

    **p < .01

    †p < .10a

    Square root transformed variable

    PASS STAI AAQ-

    2a 

    Aware Accept

    STAI .43**

    AAQ-2a 

    -.40** -.82**

    Aware .07 -.13 .06

    Accept -.20* -.67** .64** .01

    AVQ -.21* -.00 .11 -.05 -.17†

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    Table 6. Predictors of procrastination: anxiety, psychological flexibility, mindfulness, and

    academic values (Study 2) 

    Variable r²∆   F∆   df   Beta 

    Step 1 .19** 26.46** 1,116

    STAI .43*

    Step 2 .06* 2.81* 3,113

    AAQ-2a 

    .16

    Accept .14

    AVQ -.17

     Note. STAI = State-Trait Anxiety Inventory-Trait Version; AAQ = Action and Acceptance

    Questionnaire II; Accept = Acceptance subscale of the PHL-MS; AVQ = Academic Values

    QuestionnaireBetas reported are those from the final step at which all variables were entered into the equation.

    **p < .001

    *p < .05

    a

     Square root transformed variable