PSYC 304 Lecture Notes - Developmental Psychology, Oedipus Complex, Longitudinal Study
3 Dec 2012
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Quiz on tuesday: chapters one and two. Correlation: a measurement for how two things are related. Small r (less than . 3), med r (. 4-. 6) or strong r (. 7-1. 0) Positive and negative correlations are equally strong, the only difference is that positive means that both increase and negative means that one increases and the other decreases. The only way to determine causation is with an experimental design, because correlation doesn"t indicate causation. The quasi-experiment (it"s a natural, not randomized environment. this is an inferior design, because you can"t randomize it) Cross-sectional design: you"re comparing children of different ages and figuring out if there"s a difference between the two groups. Longitudinal study is ideal, but it"s expensive (you measure people across time) The sequential design gets around that: you select different ages of children at onset and then observe them for a period of times as well.
