Humphreys' comments on double-median splits (TM 504 009) are essentially correct, but are not relevant to the original Kirby and Das article (EJ 182 444). His comments do not weaken our findings. (Author/RD)

Kirby and Das (EJ 182 444) dichotomized measures of individual differences and treated them as independent variables in an analysis of variance. Correlational analysis would have provided more powerful tests of their hypotheses. Interpretation of the dichotomized variables as independent, causal antecedents of their measures of intelligence would…

The first purpose of this research was to study the effect of distraction on achievement and to clarify some discrepancies in research findings on the effect of response mode. (Author/RK)

The effects of imagery instructions on fifth-graders with differing abilities were examined through within-class analysis and analysis in which class effects were allowed to have influence. In the latter analysis there were significant Aptitude X Treatment interactions with subscores derived from paired-associate tasks. Interactions were…