Report on the effects of an industrial training program in developing interactive skills, carried out by BOAC. (GB)

This study sought to assess the ontogenetic course of three classes of size-value phenomena. Size-value phenomena refers to the observation that valued and neutral objects physically equal in size are judged as unequal. Results are discussed in terms of perceptual development. (ST)

The effectiveness of training procedures which used visual-visual arbitrary matching, blocked-trial matching-to-sample, and successive discrimination training to teach visual-visual discrimination of two-dimensional forms was evaluated with two men having severe mental retardation. Results indicated that the procedures did establish conditional…

Goals and challenges pertaining to infant sensory and perceptual development are discussed. It is suggested that the inability of researchers to think and talk wisely about "partial accomplishments" in development creates a barrier in developmental research. Conceptual schemes are needed to accommodate these partial accomplishments. Three major…

According to J. Piaget, the child continually constructs or refines previous constructions in defining reality. Taking Piaget's lead, a study attempted to describe how children construct reality, with particular emphasis on the role of television in that construction. Four young children were observed and audio taped in viewing situations in their…

A study is reported in which subjects aged 8 - 18 years made magnitude estimations of height for targets whose height and distance from them varied. For distances up to 15m, and heights from 5 to 50 cm, size constancy prevailed at all ages. (MS)

Research in the development of musical perception is described. It is crucial to students' experience that they learn to bring to the surface those "invisible" ideas inherent in music development such as clapping a rhythm or singing a tune. In this way they learn to bridge the gap between intuitive knowledge and the representation of this…

Investigates the belief that caregivers' sensitive and contingent behavior is closely related to children's perceived control by analyzing the interactions between mothers and their 3 1/2- to 4 1/2-year-old children during a problem-solving task. (HOD)

The reaching behavior of 12 infants in the presence of solid objects and pictures of objects placed within and beyond possible contact distance was videotaped in three sessions at 15, 19, and 24 weeks of age. (Author/MS)