Results on human performance on the Traveling Salesman Problem (TSP) from different laboratories show high consistency. However, one exception is in the area of individual differences. While one research group has consistently failed to find systematic individual differences across instances of TSPs (Chronicle, MacGregor and Ormerod), another…

Reviews some findings obtained through comparisons of dyslexic readers with nondyslexic readers matched by chronological or reading age. Notes some of the problems and pitfalls associated with this approach. Explores the potential of other group comparisons when examining sources of reading difficulty, and discusses individual differences within…

Examined and measured effects of individual differences among the elderly in a cognitive training program emphasizing general learning skills. Memory improvement was greater for learning skill training and social support compared with a waiting list group. Individual variability obscured statistical differences in treatment effect. Examined…

Argues that individual and group differences in priming performance scores are heavily influenced by overall speed and accuracy, and thus are a flawed reflection of internal activation of semantic priming. Suggests that meaningful comparison of groups on the activation underlying priming difference scores requires removing the effects of overall…

Presents two chain-of-choices models, one for adoptive parents and one for birth parents and adoptees, as possible frameworks within which to consider the role of individual differences, choices, and selections in understanding the process of adoption and adoption outcomes. Discusses the research and practice implications following from the…

A review of literature relevant to equal educational opportunity is presented in order to support an argument for the use of normative models in educational research. The literature review shows that confusion over the 1966 Coleman Report was due to a mismatch between the implied reform objective of the report and its statistical approach. The…

Over 150 papers and articles were examined, and interviews with noted computer-based instruction (CBI) professionals were conducted to obtain information about CBI and the research evidence. Focus was on four main areas of CBI research--costs, learning achievements, individual differences, and student attitudes. Consistent empirical evidence did…

When two groups, initially dissimilar, undergo different treatments, can subsequent differences be partitioned in such a way that the difference between the two treatments is unbiased? This is the central problem of this paper, and it is confronted by the examination of two levels of information using a Follow Through Evaluation. The first…