RESEARCH APPROACH & DESIGN
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RESEARCH APPROACH &
DESIGNDR. MAHESWARI JAIKUMAR
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DEFINITION• The research design is the master
plan specifying the methods & procedures for collecting & analyzing the needed information in a research study.
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• Research design can be defined as a blue print to conduct a research study, which involves the description of research approach, study setting, sampling size, sampling technique, tool & methods of data collection & analysis to answer specific research questions or for testing research hypothesis
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• Research design is a plan of how & where data are to be collected & analyzed.
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• Research design is the researcher's overall plan for answering the research questions or testing the research hypotheses.
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ELEMENTS OF RESEARCH DESIGN
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ELEMENTS OF RESEARCH DESIGN
ELEMENTS
APPROACH
POPULATION, SAMPLE & SAMPLING TECHNICMETHOD OF ANALYSIS
TOOL & METHODSTIME & METHOD OF DATA COLLECTION
Qualitative
Quantitative
Both
With /without conceptual framework
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SELECTION OF RESEARCH DESIGN
• FACTORS AFFECTING RESEARCH DESIGN
CONT…
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1. Nature of the research problem.2. Purpose of the study.3. Researcher’s knowledge &
experience.4. Researcher’s interest &
motivation.5.Research ethics & principles.
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6. Subjects & participants.7. Resources.8. Time.9. Possible control on extraneous
variables.10.Users of the study findings.
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VALIDITY OF RESEARCH DESIGNS
1.INTERNAL VALIDITY. 2.EXTERNAL VALIDITY.
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INTERNAL VALIDITYTHREATS TO INTERNAL VALIDITY
1.History.2.Maturation of subjects.3.Testing.4.Instrumentation change.5.Mortality.6.Slection bias.
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EXTERNAL VALIDITYFACTORS AFFECTING EXTERNAL VALIDITY
1.Hawthrone Effect.2.Experimental Effect.3.Reactive effect of pre test.4.Novelty effect.5.People.6.Place.7.Time
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TYPESRESEARCH DESIGN
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TYPES
QUANTITATIVE RESEARCH DESIGN
QUALITATIVE RESEARCH DESIGN
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QUANTITATIVE RSEARCH DESIGNS
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TYPES OF QUANTITATIVE RESEARCH DESIGN
EXPERIMENTAL DESIGN
NON EXPERIMENTAL DESIGN
OTHER ADDITIONAL DESIGN
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EXPERIMENTAL DESIGNS
TRUE EXPERIMENTAL DESIGN
QUASI EXPERIMENTAL DESIGN
PRE EXPERIMENTAL
DESIGN
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EXPERIMENTAL RESEARCH DESIGNS
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FEATURESCATEGORY RESEARCH DESIGN FEATURESEXPERIMENTAL RESEARCH DESIGN
TRUE EXPERIMENTAL DESIGN:1.Post-test-only control design2.Pre –test-post test control group design3.Solomon four-group design4.Factorial design5.Randomized block design6.Cross over design
1. MANIPULATION OF INDEPENCENT VARIABLE, IN THE PRESENCE OF CONTROL GROUP.
2. RANDOMIZATION.
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CATEGORY RESEARCH DESIGN
FEATURES
EXPERIMENTAL RESEARCH DESIGN
QUASI EXPERIMENTAL DESIGN:1.Non randomized control group design.
2.Time series design
1.Manipulation of independent variable
2.absence of either randomization or control group
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CATEGORY RESEARCH DESIGN
FEATURES
EXPERIMENTAL RESEARCH DESIGN
PRE EXPERIMENTAL DESIGN:1.One shot case design
2.One group pre test post test design
1.Manipulation of independent variable
2.Limited control over extraneous variables
3.No randomization & control group
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NON EXPERIMENTAL
RESEARCH DESIGNS
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DESIGNSCATEGORY RESEARCH DESIGN
NON EXPERIMENTAL RESEARCH DESIGN
1.DESCRIPTIVE DESIGN.
2.CORRELATIONAL DESIGN/EX POST FACTO DESIGN
3DEVELOPMENTAL RESEARCH DESIGN
4.EPIDEMIOLOGICAL DESIGNS
5.SURVEY RESEARCH DESIGN
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DESCRIPTIVE DESIGNTYPE FEATURE
1.UNIVARIENT DESCRIPTIVE DESIGN
2.EXPLORATORY DESCRIPTIVE DESIGN
3.COMPARITIVE DESCRIPTIVE DESIGN
ACCURATE DESCRIPTION OF CHARACTERISTICS OF INDIVIDUAL, SITUATION, OR GROUP &
THE FREQUENCY WITH WHICH A CERTAIN PHENOMENON OCCURS IN A NATURAL SETTING
WITHOUT IMPOSING ANY CONTROL OR MANIPULATION.
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DESCRIPTIVE DESIGN
FEATURE
UNIVARIENT DESCRIPTIVE DESIGN
Studies under taken to describe the frequency of occurrence of a phenomenon rather than to study relationship
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DESCRIPTIVE DESIGN
FEATURE
EXPLORATORY DESCRIPTIVE DESIGN
Investigating the phenomenon & its related factors about which very little is known
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DESCRIPTIVE DESIGN
FEATURE
COMPARITIVE DESCRIPTIVE DESIGN
CPMPARING OCCURANCES OF A PHENOMENON IN TWO OR MORE GROUPS
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CORRELATIONAL DESIGNCORRELATIONAL DESIGN
FEATURE
1.PROSPECTIVE DESIGN
2.RETROSPECTIVE DESIGN
EXAMINING THE RELATIONSHIP BETWEEN TWO OR MORE VARIABLES IN A NATURAL SETTING WITH OUT MANIPULATION OR CONTROL ( CAUSE & EFFECT RELATIONSHIP)
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DEVELOPMENTAL RESEARCH DESIGNDEVELOPMENTAL RESEARCH DESIGN
FEATURE
1. CROSS SECTIONAL DESIGN
2.LONGITUDINAL DESIGN
EXAMINING THE PHENOMENON IN RESPECT TO THE TIME.1.CROSS SECTIONAL : Examining the phenomenon only at one point in time.2.LONGITUDINAL:Examining the phenomenon at more than one point in time.
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EPIDEMIOLOGICAL DESIGNSEPIDEMIOLOGICAL DESIGN
FEATURE
1.CASE CONTROL STUDIES
2.COHORT STUDIES
THE INVESTIGATION OF DISTRIBUTION & CAUSES OF DISEASES IN A POPULATION
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SURVEY RESEARCH DESIGNSURVEY RESEARCH DESIGN
FEATURE
SURVEY STUDIES ARE INVESTIGATION IN WHICH SELF REPORTED DATA ARE COLLECTED FROM SAMPLE …… WITH THE
PURPOSE OF DESCRIBING POPULATION ON SOME VARIABLES OF INTEREST
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OTHER ADDITIONAL
DESIGN
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DESIGNSCATEGORY RESEARCH DESIGNOTHER ADDITIONAL RESEARCH DESIGNS
1.METHODOLOGICAL STUDIES
2.META ANALYSIS
3.SECONDARY DATA ANALYSIS
4.OUTCOME RESEARCH
5.EVALUATION STUDIES
6.OPERATIONAL RESEARCH
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CATEGORY RESEARCH DESIGN
OTHER ADDITIONAL RESEARCH DESIGNS
7.PHENOMENOLOGICAL RESEARCH.8.ETHNOGRAPHIC RESEARCH9.GROUNDED THEORY10.CASE STUDIES.11.HISTORICAL RESEARCH12.ACTION RESEARCH
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METHODOLOGICAL STUDIESMETHODOLOGICAL STUDY
FEATURE
RESEARCH CONDUCTED TO DEVELOP, TEST & EVALUATE THE RESEARCH INSTRUMENTS & METHODS
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META ANALYSISMETA ANALYSIS FEATURE
QUANTITATIVELY COMBINING & INTEGRATING THE FINDINGS OF THE MULTIPLE RESEARCH STUDIES ON A PARTICULAR TOPIC
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SECONDARY DATA ANALYSISSECONDARY DATA ANALYSIS
FEATURE
A RESEARCH DESIGN IN WHICH THE DATA COLLECTED IN ONE RESEARCH IS RE ANALYZED BY ANOTHER RESEARCHER, USUALLY TO TEST A NEW HYPOTHESIS
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OUT COME RESEARCHOUT COME RESEARCH FEATURE
OUTCOME RESEARCH INVOLVES THE EVALUATION OF CARE PRACTICES & SYSTEMS IN PLACE.IT IS USED IN NURSING TO DEVELOP EVIDENCED BASED PRACTICE & IMPROVE NURSING ACTIONS
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EVALUATION STUDIESEVALUATION STUDIES FEATURES
IT IS A RESEASRCH DESIGN WHICH INVOLVES THE JUDGMENT ABOUT SUCCESS OF A PROGRAMMES, PRACTICES, PROCEDURES, OR POLICIES
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OPERATIONAL RESEARCHOPERATIONAL RESEARCH FEATURE
INVOLOVES THE STUDY OF COMPLEX HUMAN ORGANIZATIONS & SERVICES TO DEVELOP NEW KNOWLEDGE ABOUT INSTITUTIONS, PROGRAMMES, USE OF FACILITIES & PERSONNEL IN ORDER TO IMPROVE WORKING EFFICIENCY OF AN ORGANIZATION
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QUALITATIVE RESEARCH DESIGNS
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PHENOMENOLOGICAL RESEARCHPHENOMENOLOGICAL RESEARCH
FEATURE
PHENOMENOLOGICAL RESEARCH EXAMINES HUMAN EXPERIENCES THROUGH THE DESCRIPTIONS PROVIDED BY PEOPLE INVOLVED.
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ETHNOGRAPHIC RESEARCHETHNOGRAPHIC RESEARCH
FEATURES
INVOLVES THE INFORMATION COLLECTED FROM CERTAIN CULTURAL GROUPS, BY LIVING WITH PEOPLE OF THOSE GROUPS & FROM THEIR KEY INFORMANTS, WHO ARE BELIEVED TO BE THE MOST KNOWLEDGEABLE ABOUT THE SELECTED CULTURE
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GROUNDED THEORYGROUNDED THEORY
FEATURES
GROUNDED THEORY
Theory is developed inductively from a corpus of data acquired by a participant observer
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CASE STUDIESCASE STUDIES FEATURESCASE STUDIES Research on a
phenomenon by studying in depth a single case example. The case can be an individual person, an event, a group or an institution.
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HISTORICAL RESEARCHHISTORICAL RESEARCH FEATURE
HISTORICAL RESEARCH Systematic collection & objective evaluation of data related to past occurrences in order to test hypotheses
concerning causes, effects, or trends of these events that may help to explain present events & anticipate future events.
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ACTION RESEARCHACTION RESEARCH
FEATURES
ACTION RESEARCH
Seeks action to improve practices & study the effect of the action that was taken
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