PSY BEH 101D Lecture Notes - Lecture 5: Chromosome Abnormality, Fetus, Menopause
18 Oct 2016
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Data collection designs: longitudinal: follow individuals over time. Pros: assess change directly, inter-individual patterns of intra-individual change, explain age-related change. Cons: selective attrition (high drop-out rate), great investment of money and time, test-retest effects: cross-sectional: compare individuals at different ages. Pros: no test-retest effects, less costly, age differences. Cons: confoundation, no direct assessment of change, masks inter-individual differences in intra-individual change. Avoid confoundation of time-related variation: age, history, age x history =cohort. Vary subjects" age and time of measurement: cohort effects: Affects conclusions from both cross-sectional and longitudinal studies. Cross-sectional: age differences could be due to age-differential response to historical event. Longitudinal: age differences could be a response to historical event instead of universal a age-related change. Milestones in the evolution of humans: evolutionary psychology states that modern human behavior is to adapt to environments like our ancestors, the distant past 1: Occurred at the same time in making of stone and wooden tools: the distant past 2:
