This paper examines the perceptual processes that underlie normal language acquisition with relation to perceptual dysfunctions in the aphasic child. Experiments are cited which seem to indicate that auditory dyfunctions may underlie language impairment. Experimental studies of the linguistic systems of the aphasic child seem to support the theory…

The study focuses on the possibility that the tendency of academic underachievers to respond in terms of all inclusive language is indicative of their incapacity to discriminate the uniquely meaningful aspects of their environment. The authors hypothesize that academic achievers would differ significantly from academic underachievers in their…

One hundred twenty-eight preschool boys were subjects in a 4x2x2 factorial design to investigate the change in reinforcer efficacy as a function of prior stimulus exposure. The factors were: (1) amount of repetition, 5, 25, 45, or 65; (2) reinforcer, good or bell; and (3) satiator, good or bell. Two additional groups were run as control groups to…

The incidental learning effects of discrimination which would be required in searching for and selecting related information in a text were explored. Sixty-one students from three educational psychology classes at Fairleigh-Dickinson University participated. Subjects were randomly assigned to four experimental groups and were given reading search…

Discussion centered on three sets of factors that may influence the variability observed in "concept identification" (concept formation and discrimination learning) studies: stimulus characteristics, incentives employed, and subject characteristics. Stimulus characteristics are described in terms of the number of dimensions…

The purpose of the study was to test the discriminative cue hypothesis by attempting to train pupils to increase effort following a high expectancy condition and to reduce effort following a low expectancy condition. Fourth grade high-IQ low achievers were used as subjects in the study, because the authors felt that while they would learn fast,…

Three experiments compared cognitive processes in Caucasian nursery school children from different socioeconomic backgrounds who were equated for performance on the Peabody Picture Vocabulary Test. The first demonstrated that children from lower socioeconomic backgrounds experience more difficulty in solving a series of extradimensional and…

This study was designed to investigate the effects of modeling or training with and without rule provision on the employment of strategies in solving four-dimensional, discrimination-learning problems. Subjects were 144 second and sixth-grade children from the New York City Public Schools. The blank-trial hypothesis testing paradigm was used. The…

One of the most important capacities which children employ when learning language is the capacity to generalize. A child who hears an utterance of a verbal expression while perceiving a particular object (or action, aspect, etc.) becomes normally able to apply the expression not only to this object but also to all those objects which, for him, are…

Six same-different matching tests, both verbal and nonverbal in three modalities along with a set of reading tests, were administered to 120 Israeli children in second, third and fourth grade. (MS)

Reviews "Levels of Cognitive Development," which presents a theory of cognitive development integrating discrimination- learning research with understanding of higher cognitive processes. Argues that strengths include its presentation of systematic research and providing continuity between past and present models. Weaknesses include…

An experimental group (n=6) of student dentists received discrimination training and self-evaluation exercises on 4 waxing projects and 4 handpiece projects over 13 hours. An equivalent "conventional" group (n=7) received verbal feedback with models on 7 waxing projects over 13 hours. The experimental group outperformed the conventional…

Identifies a function generator as an instrument that produces time-varying electrical signals of frequency, wavelength, and amplitude. Sending these signals to a speaker or a light-emitting diode can demonstrate how specific characteristics of auditory or visual stimuli relate to perceptual experiences. Provides specific instructions for using…

Four students (ages seven to nine) with moderate mental retardation were successfully taught to name photographs of foods using a progressive time delay procedure. Presentation of the supermarket grocery department as part of the discriminative stimulus was effective in increasing the percentage of correct responding. Some generalization occurred…