A social development theory of self is introduced as a framework for developmental psychopathology. Built on some of Piaget's principles, the theory is taken into the social domain and used to define the movements of self and important others throughout life. (PCB)

Three experiments test object permanenece in 3 1/2- and 4 1/2-month-old infants, and use an impossible-possible-habituation event format. The 4 1/2-month-olds, and the 3 1/2-month-olds who were fast habituators, look reliably longer at the impossible than at the possible event. Results seriously question Piaget's (1954) claims regarding the age at…

Assesses three sets of Piagetian exclusion operations (of varying the independent variables, of holding the independent variable constant, and tautology) and of levels of thought (concrete through formal) in 33 fifth graders, 27 sixth graders, and 31 seventh graders. (HOD)

The hypothesis that differences in definitions of perceived internality in Piagetian and locus of control viewpoints account for paradoxical findings was tested empirically using two independent samples of children. Results suggest that perceived internality depends on the aspects of means-ends beliefs on which one focuses.

Nine undergraduate science and non-science majors (novices) who had recently completed their first college classroom study of genetics and seven genetics graduate students and biology instructors (experts) were videotaped as they attempted to solve a selected group of seven moderately complex classifical genetics problems and three Piagetian tasks…

In this paper, Piaget's theory is analyzed using Locke's philosophy. The first part, "Mental Experiences," describes the author's view (with a tentative interpretation of Piaget's position) of reflection, abstraction, re-presentation, and the use of symbols. The second part, "Piaget's Theory of Abstraction," has four sections:…

Tests four hypotheses to separate the effect of schemes from drawing-specific influences on young children's drawings and examines whether copies and anticipatory drawings are influenced by schemes in the same manner. (HOD)

Ordering theory was used in two studies to empirically determine hierarchies of developmental precedence for Piaget's 16 logical combinations. In study 1, subjects (N=94) responded to statements about odd and even numbers; in study 2, 30 subjects responded to statements about line segments. Results are reported and discussed. (Author/JN)

Proposes a theoretical model of cognitive development and applies this model to the secondary analysis of two large-scale studies which focus on the acquisition of formal operational schemata by adolescents in the United States and Israel. Results support the "unity" hypothesis of cognitive development that the various schemata of formal…

Word association techniques were used to examine the growth of biological knowledge over a period of years, from fourth-grade to college students. Results were analyzed by classifying stimulus-response word pairs according to the nature of the relationship between the words in each pair. Three hypotheses were tested: (1) the proportion of enactive…

Argues that developmental psychology remains parochial in spite of increased cross-cultural developmental research. Reviews research and theories dealing with cognitive development in childhood and adolescence. Contributions outside Piagetian and Vygotskian traditions are outlined along with suggestions for further research on emotional…

Two approaches that apply Piaget's theory of cognitive development to the study of child psychopathology are presented. (PCB)

Explores longstanding inconsistencies in Piaget's account of development of spatial representation and perspective-taking. Examines Piaget's early writings and the findings of the original "three mountains" experiment. Concludes that Piaget's alternative theory is compatible with contemporary thinking and is important as a contributory…

Argues that Susan Sugarman's article in this issue contains some valid criticism of assumptions in developmental psychology, but that some of her conclusions regarding other assumptions need to be questioned. Suggests that many problems raised by Sugarman would disappear if developmental psychologists concentrated on children's early achievements…

Examines the relationship between visual attentiveness, search behavior, and duration of independent mobility for 56 eight-to ten-month-old infants when presented with three versions of the Piagetian Stage IV object permanence task. (HOD)