Kindergarten and third grade children originally assessed in 1973 were retested one year later on a series of conservation and transitive inference tasks (length and weight content areas). An additional sample of matched cohort/grade subjects was assessed in the second year only to permit evaluation of repeat measurement biases for the…

A major premise of Piagetian theory relative to the periods of concrete and formal operations is that competence in specific logical operations is a necessary but not sufficient prerequisite to competence in other specific logical operations. The present study tested for the existence of specific concrete operations and specific formal operations…

This manual is intended primarily for use by small groups that must accomplish tasks within specified periods of time. Chapters, directed toward groups in business, industry, education, religious organizations, politics, government, or virtually any situation where a cooperative effort is required, discuss the following areas: group work as…

College students, in three experiments, learned to recite a counting pattern in the base three number system. Although all subjects learned to a criterion of two errorless trials, learning with different rule systems resulted in different levels of understanding and performance on transfer tasks. (GDC)

The definition of hierarchical structure is reviewed, together with psychometric and experimental evidence regarding the existence of specific structures. A mathematical model including hierarchical and nonhierarchical options for a two component task is presented, along with an experimental design appropriate for testing the model and related…

A group of perceptual and motor tests were administered to 155 advantaged and disadvantaged student. The results are discussed in terms of differential perceptual-motor and motor growth and need to structure educational experience that will contribute to growth. (Author)

Examines another dimension of the vocational training issue, namely the relationship of training and performance in specific jobs. It explores the relative effects of alternative types of job training on the performance and promotion of tradesmen in a large, modern factory in south India. (Author)

This study examined variables related to problem-solving approaches of young children, using the theoretical framework provided by Zigler and collaborators in their work on outerdirectedness. Four aspects of outerdirectedness were examined: developmental trends, different types of reinforcement, task difficulty, and pride in accomplishment. (ST)

Results support the inference that symbolic mediation is a measurably time-consuming process and that temporal factors are involved in the ontogenetic transition from single-link to symbolically mediated behavior. (Author/CB)

Results reaffirm the notion that retarded individuals are less adept at recognizing familiar forms haptically than visually. (Author)

Four groups of kindergarten children were involved in a pretest-posttest experiment comparing verbal cued, visual cued, verbal rule sulpplemented instruction on conservation tasks. Both language level and analytic sorting behavior were reliable predictions of number conservation performance in individual children. (Author/WY)

Paper presented at the annual meeting of the American Orthopsychiatric Association (new York, New York, 1969).

Reprinted from "Value Engineering , Volume I, Number 5, February 1969.