A review of research shows that while some studies support (1) the necessity of developing logical (operational) thought, (2) the maintenance of this cognitive level, and (3) the finality of the formal operational stage, the bulk of research challenges these three aspects of traditional Piagetian theory. (LRA)

A developmental theory of adult intelligence is proposed called PPIK. The PPIK theory integrates intelligence as process, personality, interests, and intelligence-as-knowledge. Data from the study of knowledge structures are examined in the context of the theory and in relation to measures of content abilities. (SLD)

Evidence on the impact of noncognitive factors on the cognitive performance of young and older adults is reviewed. Cohort-associated modifiers, motive states, task and measurement factors, and environmental effects are related and account for age differences in cognitive performance. Areas of research pertinent to educational psychologists are…

The reflective judgment (RJ) model is described, along with research findings based on the model and contributions to understanding student intellectual development in higher education. The RJ model (Kitchener & King, 1981) describes a series of changes that occur in the ways adults/young adults understand the process of knowing, and…

Cognitive change in the elderly can be due to several etiological factors which are empirically difficult to separate and clinically problematic to differentiate. Normal aging is accompanied by behavioral slowing. The slowing down of psycho-motor processes results in a lowered intelligence quotient, but cannot be taken as unequivocal evidence for…

This paper discusses the use of telephone surveys as a substitute for, or addition to, the use of door-to-door surveys in assessing adult literacy ability. Part 1 addresses issues of validity in adult literacy assessment, including the concepts of construct or inferential validity and action or use validity. Part 2 is a review of related research…