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PSY 285

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					  PSY 285
Research Methods
   *A Review*
           To All Students…
• Research and Statistical Support
  – All notes available online indefinitely
  – E-mail me if you need to set up an
    appointment for additional help related to
    analyses, design, or web-based research
• Applied Psychological Endeavors
  – Class announcements
  – Student activities that don’t make me puke
          To “A” Students…
• Recommendations
  – Give me at least two weeks notice
  – Unofficial transcript, writing sample, meeting

• Research experience
  – Meeting to determine if lab projects will
    facilitate growth
    What I Hope You’ve Gained
• Greater skepticism of studies
• Improved appreciation for research
• Decreased fear of research
• Increased indignation over pre-scientific
  policies; lack of world-saving
• Greater interest in social involvement
• Improved ability to examine and plan
  studies; write reports
                Science
• Science vs. Pseudoscience

• Goals of science
                    Ethics
• What problems will you likely face?

• Informed Consent

• Confidentiality

• Deception / Debriefing
          Research Ideas
• Basic vs. Applied Research
                Measurement
• Reliability
  – Test-retest
  – Alpha
  – Inter-rater
• Validity
  – Face
  – Content
  – Criterion
  – Construct
               Statistics
• p-value

• What does it mean?

• What if p = .03? .64?   .000?
   Observations and Surveys

• What makes for a good observation?

• What are the keys to a good survey?
              Correlations
• Range of values?
• Two factors that attenuate correlations?
• Effect size for…
  r = .36 r = -.57 r = .11 r = 1.08
• Why are correlations cool?
• What does R2 mean?
• Why use regression?
             Experiments
• IV vs. DV
• Validity: Measurement, Conclusion,
  Internal, External
• Between- vs. Within- subject design
• Cohen’s d
• t-test vs. ANOVA                             40

                                               35



• Control groups
                                               30




                               Effectiveness
                                               25

                                               20



• Main effects vs. Interactions
                                               15

                                               10
                                                    Obnoxious
                                                5
                                                    Typical
                                                0
                                                          Rare               Often
                                                                 Frequency
                 Policy
• Why are we not acting to save the world?

• What are quasi-experimental designs?

• What is program evaluation?

				
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