PSYC 2001 Final: PSYC 2001 Notes Final.docx

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9 Jul 2014
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Extraneous variables ( unwanted variability ; anything besides the independent variable and the dependent variable) Just like a regular experiment, there will be a mean score for the hs program level . And a mean score for no hs program level to another group that does not (cid:215) Disadvantages: (cid:215) need more participants (cid:215) cannot determine how individual develops over time (cid:215) factors other than age may differentiate the groups (cid:215) cohort effects or generation effects. Advantages: (cid:215) need fewer participants (cid:215) absence of cohort effects (cid:215) able to determine how individual"s behavior changes with age (maturation/growth) Disadvantages: (cid:215) time consuming (cid:215) requires long term commitments from researcher and participants (cid:215) expensive (cid:215) subject to high drop out rates (cid:215) potential practice effects. Advantages of small n designs: (cid:215) assess special cases (cid:215) assess a breadth of information from a few participants (cid:215) able to demonstrate exceptions to the rule (cid:215) representativeness of the sample.

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