Authors of the taxonomy made various claims about its properties that concern both educational and psychological issues; these claims have stimulated investigations of the taxonomy's validity. As the taxonomy is now entering its twenty-second year, this review attempts to survey these investigations and appraise the findings. (Author/CP)

Results obtained from the research were inconsistent, indicating no support for the thesis that objectives aid learning. Research recommendations are submitted, with conclusions drawn reflecting the positive attitudes toward presenting objectives. (JB)