A critical evaluation of the use of stochastic independence in psychological research is provided, considering (1) confirming the null hypothesis; (2) power of the statistical test; (3) Simpson's paradox; and (4) between-subjects and within-subject correlations. The importance of formal models in studying (in)dependence is emphasized. (SLD)

Improvements in 5- and 7-year-olds' acquisition and retention of related concept pairings were examined when additional similarities and differences between pair members were provided. Using a standard paired-associate learning paradigm, children learned 18 related picture pairs; some of the children either were given or produced additional…