The Big Five and HEXACO questionnaires are full of … Big Five and HEXACO questionnaires are full...
Transcript of The Big Five and HEXACO questionnaires are full of … Big Five and HEXACO questionnaires are full...
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The Big Five and HEXACO questionnaires are full of affect and
so, probably, are your questionnaires
Michael D. Biderman, Ph.D.The University of Tennessee at Chattanooga
pptx at www.utc.edu/faculty/michael-biderman
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Key Reference
• Biderman, M. D., McAbee, S. T., Chen, Z., & Hendy, N. T. (In press). Assessing the evaluative content of personality questionnaires using bifactor models. Journal of Personality Assessment.
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The Big Five
• Five general traits believed to be foundation characteristics of normal personality
• Extraversion• Agreeableness• Conscientiousness• Emotional Stability (Rev of Neuroticism)• Openness to Experience
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Place of the Big Five
• “After decades of research, the field has now achieved an initial consensus on a general taxonomy of personality traits, the “Big Five” personality dimensions.” (John, O. P. (2008) in John, Robins, & Pervin, Handbook of Personality: Theory and Research, 3rd Ed.)
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Path Diagram of the Big 5
5
Each specific domain is indicated by 2 – 20+ items, usually about 10.
The content of each item is supposed to be specific to the domain.
For example, the Extraversion items are supposed to reference only extraversion, nothing else.
Same for each of the other domains
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HEXACO
• Six general traits believed to be foundation characteristics of normal personality
• Extraversion• Agreeableness• Conscientiousness• Emotional Stability (rev of Emotionality)• Openness to Experience• Honesty/Humility
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Key B5/HEX Assumptions
• Applies to everyone – each of us has a unique B5/HEX profile
• Dimensions are orthogonal – independent –being high on one does not mean you’re high or low on any other
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Two Issues
• 1. Summated scales of the Big Five and HEXACO Dimensions are positively correlated
• Block 1995, “…the empirical research findings indicate that the five factors are frequently and importantly correlated with each other”
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Examples of Issue 1 from UTC data. . .
• N=1195 NEO-FFI-3• Negative correlations are in red
• Mean of correlations = +.08.
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Ext Agr Con Sta OpnExt 1 .17 .18 -.05 -.03Agr 1 .18 .18 .12Con 1 -.07 .04Sta 1 .04Opn 1
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Issue 1 from UTC data . . .
• IPIP 50 Item Questionnaire; N=1140• Negative correlations are in red
Mean of correlations = +.18.
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Ext Agr Con Sta OpnExt 1 .28 .07 .21 .22Agr 1 .18 .06 .24Con 1 .09 .19Sta .21Opn 1
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Issue 1 from UTC data. . .
• BFI-2 Questionnaire; N = 638• Negative correlations are in red
Mean of correlations = +.26.
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Ext Agr Con Sta OpnExt 1 .15 .28 .34 .20Agr 1 .42 .24 .32Con 1 .30 .24Sta 1 .08Opn 1
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Issue 1 from UTC data . . .
• HEXACO 100; N = 1195• Negative correlations are in red
Mean of correlations = +.12
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Ext Agr Con Sta Opn HHExt 1 .25 .25 .08 .05 .07Agr 1 .18 .18 .12 .32Con 1 -.07 .04 .28Sta 1 .04 -.08Opn 1 .14HH 1
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Last Example of Issue 1 . . .• HEXACO 60; N = 1373• Negative correlations are in red
Mean of correlations = +.15.
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Ext Agr Con Sta Opn HH
Ext 1 .14 .19 .14 .03 .04
Agr 1 .09 .02 .12 .31
Con 1 -.10 .12 .30
Sta 1 .05 -.04
Opn 1 .10
HH 1
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Issue 1:Dot-plot of B5 / HEX scale correlations
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0.00 0.20 0.40 0.60-0.20-0.40
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Two issues continued . . .
• 2. Big 5 and HEXACO summated scales except Openness are generally fairly highly correlated with measures of emotional/affective states . . .
• Rosenberg Self-esteem Scale• Costello & Comrey Depression Scale• PANAS PA and NA scales
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UTC Scale Correlations with Self-esteem
Extscale
AgrScale
Con Scale
StaScale
OpnScale
H/HScale
NEO-N=1195
.51 .28 .53 .66 .03
IPIP 50 N = 531
.26 .12 .28 .30 .23
BFI-2; N = 638
.44 .18 .41 .60 .18
HEX 100 N=1195
.64 .20 .40 .12 -.01 .15
HEX 60 N=1373
.61 .11 .29 .18 -.04 .14
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What does Extraversion have to do with Self-esteem?What does Conscientiousness have to do with Self-esteem?What does Emotional Stability have to do with Self-esteem?
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UTC Correlations with Depression
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Extscale
AgrScale
ConScale
StaScale
OpnScale
H/HScale
NEO N=1195
-.56 -.42 -.51 -.54 -.06
IPIP 50 N = 531
-.22 -.17 -.19 -.29 -.11
HEX 100 N=1195
-.61 -.25 -.42 .01 .01 -.25
What does Extraversion have to do with Depression?What does Conscientiousness have to do with Depression?What does Emotional Stability have to do with Depression?
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UTC Correlations with PA and NA
18
PANASPA
Extscale
AgrScale
Con Scale
StaScale
OpnScale
H/HuScale
NEO-N=1195
.60 .29 .59 .46 .14
HEX 100 N=1195
.61 .18 .48 .06 .10 .15
PANASNA
Extscale
AgrScale
Con Scale
StaScale
OpnScale
H/HuScale
NEO-N=1195
-.42 -.31 -.43 -.72 .00
HEX 100 N=1195
-.52 -.35 -.32 -.29 .01 -.19
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Summary of Issues
• 1. The scale scores of the Big 5 and the HEXACO are generally positively correlated with each other.
• 2. Most of the Big 5 and HEXACO scale scores correlate with measures of affect.
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The Common Content Hypothesis
• We believe that ALL questionnaire items have some aspect of content in common.
• That content is in addition to the domaincontent
• It affects responses to all items• Some respondents are more likely to agree
with ALL items because of this content.• Some respondents are more likely to disagree
with ALL items because of this content.
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The Common Content Explanation
• This certainly accounts for Issue 1 – the positive correlations of Big 5 and HEXACO scale scores
• For example, if there is something in the Extraversion items that is also in the Agreeableness items, then that common content will cause Extraversion scales and Agreeableness scales to be positively correlated
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Common Content and Affectivity
• Common content, if it’s affective in nature, could also account for Issue 2- the correlations of ALL (but Openness) Big 5 and HEXACO scales with measures of affect
• If Extraversion, Agreeableness, Conscientiousness, and Stability items all have some content related to affective states, that would explain why they might all be correlated with affect scales
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Measuring Common Content
How do we measure the responses to content that cuts across all items and multiple domains in a questionnaire?
Recent advances in factor analysis give us a method
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Bifactor FA models
• The advances have been in what are called bifactor models for factor analysis
• Bifactor models allow you to measure both specific domains, such as the Big 5 or HEXACO domains, and also general characteristics common across all items not specific to the domains
• Note: The study of models similar to bifactor models has been done under the heading of common method variance
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A “regular” Big 5 factor model
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Each specific domain is represented by a factor.
Each factor represents a characteristic –Extraversion, Agreeableness, etc
Each factor influence responses to a group of items. The amount of such influence for an item is the item’s loading on that factor.
Note that the factors are not correlated, nor is there a mechanism for them all being correlated with affect
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A bifactor model
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Each specific domain is represented by a factor as before
But, there is an added general factor.
The general factor represents a characteristic common to ALL items.
We believe that this common characteristic can account for the correlations between scale scores and the common correlation with affect measures
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Full Disclosure
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We actually applied a slightly more complicated model in which there were actually THREE general factors – one completely general, one general to positively-keyed items, and one general to negatively-keyed items.
For the sake of simplicity, I’ll discuss the following as if there were only one general factor.
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Is a General Factor Needed?
From the first application of bifactor models to Big 5 questionnaire data (Bäckström, 2007; Biderman, 2007) it has been found that including the general factor in analyses significantly improves the ability of factor analytic models to represent the dataSo the answer is “Yes, a general factor seems to be needed.”
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G is needed. But what is it?
• Adding the G factor significantly improves goodness-of-fit of model
• But what does G represent? • What is the common content??• What is it that is in Extraversion items and in
Agreeableness items and in Conscientiousness items and in Stability items and in Openness items, and in Honesty/Humility items?
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Item Valence
• We discovered in 2011, by chance, that G correlates positively with PANAS PA and negatively with PANAS NA (Biderman et al., 2011)
• This suggested that whatever the item characteristic is that distinguished PA from NA is the characteristic important for G
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Item Valence . . .
• PA items are “positive” words – “interested,” “excited,” “strong,” “enthusiastic,” “proud” . . .
• NA items are “less positive” words –“distressed,” “upset,” “guilty,” “scared” . . .
• This suggested that the item characteristic that indicated G was item “positiveness” or valence
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Is G a valence factor?
• Factor analysts know that the loading of an item on a factor shows us what the factor is about
• We look for items with high loadings to define factors – ask any factor analyst
• So we investigated the hypothesis that item valence determined the loadings of items on the G factor
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The Valence study• To explore the valence idea, we had UTC students rate
the valence of Big 5 and HEXACO items.• We asked, “If a person had this characteristic, it would
make him or her look • 1 = absolutely bad, • 2 = very bad, • 3 = bad, • 4 = neither good nor bad, • 5 = good, • 6 = very good, • 7 = absolutely good
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Valence does determine G loadings
• Loadings on the G factor were very strongly positively correlated with Valence ratings
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Explaining the two issues
We measured the Big 5 and HEXACO domains using factor scores from the bifactor model.Big 5 and HEXACO Factor scores from the bifactor model will have the contamination of the common content removedWe also computed factor scores for the G factor separately from the Big 5 and HEXACO domain factor scores.
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Results: Issue 1Recall that the scale scores were almost all positively correlated with each other
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0.00 0.20 0.40 0.60-0.20-0.40
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Issue 1 resolvedDot plot of factor score correlations . . .
Note that the distribution of correlations is nearly centered over zero.So removing the effect of common content resulted in generally uncorrelated Big 5 and HEXACO domains
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Issue 2 – Correlations with Self-esteem
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N=1195 Ext Agr Con Sta Opn H/Hu
NEO Scale .51 .28 .53 .66 .03HEX Scale .64 .20 .40 .12 -.01 .15
NEO FS .14 .01 .11 .32 -.02HEX FS .43 -.05 .19 .10 -.13 -.09
Note the large decreases in correlations for Extraversion Agreeableness, Conscientiousness and Stability.
Based on these analyses I would conclude that only Extraversion and perhaps Stability are importantly related to Self-esteem.
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Similar results for Depression
N=1195 Ext Agr Con Sta Opn H/H
NEO Scale -.56 -.42 -.51 -.54 -.06HEX Scale -.61 -.25 -.42 .01 .01 -.25
NEO Factor -0.21 -.16 -.10 -.24 -.06HEX Factor -.39 -.02 -.16 -.02 .14 .02
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As was the case with Self-esteem, the correlations are much closer to zero.
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And for PA and NA
PA N=1195 Ext Agr Con Sta Opn H/HuNEO Scale .60 .29 .59 .46 .14HEX Scale .61 .18 .48 .06 .10 .15NEO Factor .24 .02 .19 .13 .09HEX Factor .44 -.03 .30 .11 -.01 -.04
NA N=1195
NEO Scale -.42 -.31 -.43 -.72 .00
HEX Scale -.52 -.35 -.32 -.29 .01 -.19NEO Factor -.12 -.08 -.08 -.41 -.01HEX Factor -.34 -.11 -.12 -.17 .12 .00
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Conclusion regarding Issue 2
• Measurement of Big 5 and HEXACO domains with factor scores from a bifactor model yields measures that are not generally correlated with affect scales
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What about G correlations?
N=1195 Self-esteem Positive Affectivity
Depression Negative Affectivity
NEO G .72 .68 -.70 -.62HEX G .58 .54 -.63 -.51
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G has absorbed all of the affective content of the Big 5 and HEXACO items.
It correlates very strongly with all of the affect measures.
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Conclusion
• We believe Big 5 and HEXACO scale scores are contaminated with item affective content.
• We believe that measuring Big 5 and HEXACO domains with factor scores from a bifactor model removes the affect contamination from the domains and creates a separate measure of affect that is the G factor
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Implications
• If you compute a summated scale, it very likely represents two things:
• 1) the characteristic of interest, and
• 2) the respondent’s affective state
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The Future
• I believe that we’ll begin measuring psychological constructs using factor scores from models such as the bifactor model presented here.
• Summated scales will no longer be used in 2100.
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ReferencesAnglim, J., Morse, G., De Vries, R., MacCann, C., & Marty, A. (2017). Comparing job
applicants to non-applicants using an item-level bifactor model on the HEXACO Personality Inventory. European Journal of Personality, http://dx.doi.org/10.1002/per.2120
Bäckström, M. (2007). Higher-order factors in a five-factor personality inventory and its relation to social desirability. European Journal of Psychological Assessment, 23, 63-70. doi:10.1027/1015-5759.23.2.63
Bäckström, M., Björklund, F., & Larsson, M. (2009). Five-factor inventories have a major general factor related to social desirability which can be reduced by framing items neutrally. Journal of Research in Personality, 43, 335-344. doi:0.1016/j.jrp.2008.12.013
Biderman, M. D. (2007). Method variance and Big Five correlatons. Paper presented at the 7th Annual Conference of the Association for Research in Personality, Memphis, TN, January 24, 2007.
Biderman, M. D., Nguyen, N. T., Cunningham, C. J. L., & Ghorbani, N. (2011). The ubiquity of common method variance: The case of the Big Five. Journal of Research in Personality, 45, 417-429. doi:10.1016/j.jrp.2011.05.001
Biderman, M. D., McAbee, S. T., Chen, Z., & Hendy, N. T. (In press). Assessing the evaluative content of personality questionnaires using bifactor models. Journal of Personality Assessment.
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