PSYCH 3GG3 Lecture Notes - Lecture 3: Electrodermal Activity, Repeated Measures Design, Habituation
9 Mar 2020
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Document Summary
Different children at different ages are observed at the same time to gain info on different ages compare young kids to old kids to infer about changes over time. Between subjects design between subjects-design each participant only on one group and they are compared along the same variable at one time longitudinal design same kids measured at one time and then later one. Within-subjects design (measures taken from the same individual) advantage: can measure both general trends and individual differences. Disadvantage: selective attrition (outcome might be biased; those who quit may be different than those who stay that is relevant to the study, practice effects (change in performance due to previous exposure) cross-sequential design. Different age groups studied at the same time once, and then later to observe age-related changes a mixture of cross-sectional and longitudinal advantage: we can estimate cohort effects and practice effects to control for them statistically.
