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A perspective on aptitude and instruction
Methods for research on interaction
Testing hypotheses about interactions
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ability ability grouping achievement analysis analysis of variance anova anxiety appeared aptitude measures assigned ATI research ATI studies better blocked ceiling effect cell Chapter classes classroom cognitive compared concept conclusion contrast conventional correlations course criterion Cronbach dependent variable descriptive statistics disordinal educational Educational Psychology error evaluation evidence examined example experiment experimental factors Figure findings given Grade Guilford Highs hyperbola hypothesis individual differences instruction instructor interaction effect interpretation investigator kind learner learning lessons Lows main effects mathematics McKeachie means ment mental methods negative null hypothesis ordinal outcome measures pattern performance persons posttest Pre-Ach predicted predictors pretest problems procedure psychology questions reading regression analysis regression slopes response rote learning sample scores significance tests significant interaction similar spatial statistical steeper strategy style Table task teacher teaching treatment variable variance verbal visual