An approach to human performance based on economic concepts is described; the human system employs utility considerations to determine allocation of its limited resources. The efficiency of those resources in performance depends on parameters characterizing the task and the performer. Models and interpretations of dual task performance are…

Identifies external and internal variables that affect public-sector organizations. Contextual frameworks are developed as orienting devices for organization development intervention in divisions of state welfare systems. Describes tactics of change in ambiguous performance settings and focuses on internal influence variables expected to affect…

A review of the literature on the spatial functioning of the blind, the results of a questionnaire of 75 sighted college students and their parents, and results of a study of 87 blind and seeing adults' performance on three spatial tasks are presented. The review suggested that adventitiously blind individuals perform better than congenitally…

The relationship between performance on various Piagetian and reading achievement tasks as examined through 26 correlational studies is reviewed. The following areas of concern are addressed: (1) sample characteristics of the subjects; (2) classification of the Piagetian tasks into five categories of logical operations, spatial concepts, general…