This study was concerned with the effect of situational frequency manipulations on subsequent discrimination learning. The subjects were 104 fourth-grade children attending two elementary schools located in middle-class residential areas. Twenty-six subjects were randomly assigned to each of two picture conditions. The other 52 subjects were…

This report summarizes research concerning stimulus analyzing mechanisms, giving the main experimental findings and theoretical developments. Most of the data and the experimental findings are to be found in the 89 publications listed in the bibliography. The research is discussed under five main headings: (1) shape recognition, (2) selective…

THE TWO FOLD PURPOSE OF THIS STUDY WAS TO (1) INVESTIGATE THE RELATIVE EFFECTIVENESS OF GRAPHEMIC AND PERCEPTUAL REPRESENTATIONS IN TEACHING CONCEPTS OF FOREIGN LANGUAGE WORDS, AND (2) DETERMINE WHAT HAPPENS UPON PRESENTING SUCH REPRESENTATIONS IN THE CONTEXT OF OTHERS. FOR THE PURPOSES OF THIS STUDY, A PERCEPTUAL REPRESENTATION WAS DEFINED AS…

Processing requirements in letter discrimination for beginning readers with reflective-impulsive and field-dependent--field-independent learning styles were investigated. Results were interpreted in terms of feature analyses employed in letter identification and discrimination. (BJG)

Measures of active sleep, quiet sleep, sucking, crying, body size and gestational age were factor analyzed for 137 normal newborns at 2 days of age. The results yielded 3 stable factors: reactivity-irritability, maturity, and reflexive and discriminative sucking. (JMB)

Two research experiments were conducted to investigate the characteristic of overselective attention of autistic children, which has proven detrimental to learning when prompt fading techniques are used. It was found that autistics often respond exclusively to the prompt (the extra guiding stimulus), and fail to learn about the training stimuli.…

The study investigated the effect of information responsiveness in relation to training in feedback utilization on discrimination learning among 77 preschool children (ages four and five years). (Author/PHR)

Twenty-eight five- and seven-year-old children were reinforced for key pressing according to a DRL (differential reinforcement of low rates) five-second schedule of reinforcement. (Author)

Nine mentally handicapped adults were studied in order to assess the differential susceptibility of mentally handicapped individuals to sensory and social reinforcers. (Author/BD)

A strategy for teaching multiple discriminations was used to teach six severely delayed students to name the numbers on the face of a clock, the eight most popular colors, and letters of the alphabet. (Author)

Described is a simple method for constructing (using a Xerox machine) and using progressively darker shaded flash cards for training letter discrimination via a fading strategy. (SBH)

Impulsive and reflective children performed in a discrimination learning task which included four reinforcement conditions: verbal-reward, verbal-punishment, material-reward, and material-punishment. (SB)

Thirty subjects were presented with a visual form discrimination task requiring them to match Roman letters when a variety of transformations were held constant. They were given massed practice across four blocks of eight stimuli. Results of a repeated measures analysis of variance showed support for the distinctive features hypothesis. (JC)

This study tested the prediction that a satiation effect would be observed only for noncontingent social stimuli, and not for groups presented with contingent stimuli. (Author/SB)

To complement investigations of the direct effects of lithium toxicosis on consummatory behavior, these experiments were designed to determine the aftereffects on drinking of exposure to a conditioned stimulus previously paired with lithium. (Author/RK)