Effects on learning of most principal independent variables can be generalized within, but not between, five different categories: intellectual skills, verbal information, cognitive strategies, motor skills, and attitudes. Psychological research has been and continues to be well-served by this categorization. (GC)

In planning educational research, recognition needs to be made of five domains of learning: (1) motor skills, (2) verbal information, (3) intellectual skills, (4) cognitive strategies, and (5) attitudes. In being cognizant of these domains, the researcher is able to distinguish the parts of a content area which are subject to different…