Lecture 7 Flashcards
Define between-subjects design
Different participants in different conditions
Define within-subjects design
same participants in different designs
Cross-sectional study
different groups of people, each group is a different demographic (age, gender, education level, etc)
Longitudinal study
Same group is tested repeatedly at different ages
Cohort effect
different cohorts have different developmental experiences (flaw of cross-sectional studies)
How do you account for experimenter and participant bias?
Make the study double-blind
Advantages of between subject designs
Useful for subject variables (getting enough people from each category of subject you need)
Disadvantages of between subjects designs
Need a larger sample size, confounds could be present (so you need to make equivalent groups)
Random assignment
what you do with people once they get in
Random sampling
determines who gets in
Advantages of within subjects design
requires fewer participants, eliminates equivalent groups problem (each participant serves as their own control)
Disadvantages of within subject design
order effect
