PSYCH 3JJ3 Lecture Notes - Lecture 6: Observer-Expectancy Effect, Participant Observation, Habituation
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It combines the two: sequential design is the optimal way, you have both cross-sectional and longitudinal, you can change update methods, you can remove cohort because more participants are being added over time. Advantage: study age related changes and look at the stability of individual differences, examine practice effects because some children are assessed less, can examine cohort and generational effects. If you are interested in a sub cultural group these are helpful but it does(cid:374)"t help us a(cid:374)s(cid:449)e(cid:396) a lot of developmental questions. It hard to make a decision based on one study so comparing all the studies is very helpful. It is a statistical technique that allows you to summarize the finding from several combined studies in the same area. It also allows you to study and compare thousands of participants. It yields an overall estimate or effect size. It calculates the magnitude of the difference between experimental or control groups.
