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Psychological Research. How we do what we do. Scientific Method. Theory Hypothesis Null Hypothesis IV & DV Data Collection Conclusions. Replication Reinterpretation Reformulation of theories. Collecting Data & Operationalization. Self-Report Physiological Behavioral Observation.
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Psychological Research How we do what we do
Scientific Method • Theory • Hypothesis • Null Hypothesis • IV & DV • Data Collection • Conclusions • Replication • Reinterpretation • Reformulation of theories
Collecting Data & Operationalization • Self-Report • Physiological • Behavioral Observation
Types of Studies • See page 53 of text • Correlational • Experiment • Quasi-Experiment
Correlation is not Causation! Finding: Viewing violent television is correlated with violent behavior Explanations: Behavior TV Third Variable (Home environment, physiological factors, etc.)
Types of Studies • Correlational Study • True Experiment • Experimental and Control Group • Random Assignment to conditions • Quasi-Experiment • Experimental and Control Group • NO Random Assignment to conditions
Biases • External • Personal • Expectancy
Ethics • Consent • Risks vs. Benefits • Deception • Debriefing • Follow-up • Special Populations • Animal Research
Reliability & Validity • Reliability: the extent to which a finding can be replicated • Validity: the extent to which an experiment measures the variables it was intended to measure • Internal • Construct • External • Statistical Conclusion
Confounds / Threats to Validity • Placebo effects • Experimental Cues • Reactivity • History • Regression • Selection • Attrition (These are examples, not an exhaustive list)