Relational responding and peak shift were found to be related. In two experiments, pigeons were trained to make a successive discrimination by either the blackout method of errorless learning or training with extinction. In experiment 1, pigeons trained with extinction learned a circle-sized discrimination more quickly than pigeons trained with…

Following training on an easy size discrimination, pigeons were matched on the basis of stimulus control by the positive stimulus following generalization tests. Three subjects were immediately retrained on a more difficult discrimination along the same dimension, while the remaining three subjects were retrained after a six-month delay. The…

Four- and five-year-old children (n=24) were put into two groups and trained to discriminate between two displays which could only be differentiated by a single distinctive feature located on one of the displays. Subjects trained with the distinctive feature located on the positive display learned the simultaneous discrimination while feature…

Research was conducted on two selective attention systems in learning situations. The theoretical and experimental approaches are presented in a set of six papers. One paper considered directions in attention theory and five papers report experiments with pigeon and children subjects. The two attention systems are (1) coding response, which…

Seven rhesus monkeys reared on diets high in phenylalanine to induce phenylketonuria (PKU--a metabolic disorder associated with mental retardation if untreated) were compared with normal, pair-fed, and younger controls; frontal brain-lesioned monkeys; and those raised on high-tryptophan diets in three object discrimination tasks. (Author)

This experiment was designed to examine the reinforcing effects not only of similar-dissimilar attitude statements, but also names of liked-disliked persons in a discrimination learning task. (Author)

The first part of this paper briefly describes two studies concerned with cognitive processes in children. One study examined the ability of Kindergarten and First Grade children to apply a simple rule of logical inference in order to solve a two-object discrimination problem. Specifically, the rule was of the form "if A, then not B." A second…

The purpose of these 2 experiments was to determine whether sequential response pattern behavior is affected by partial reinforcement in the same way as other behavior systems. The first experiment investigated the partial reinforcement extinction effects (PREE) in a sequential concept learning task where subjects were required to learn a…

Examined was the relationship between dependency behavior and learning in educable mentally retarded (EMR) children. Population included 120 subjects equally divided by sex into two groups of retardates and normals and subdivided into socially reinforced and non-reinforced Ss. The task measured overt or instrumental dependency (ID). Electronic…

The effects of the presence of an attachment object upon preschoolers' emotionality and discrimination performance in a novel learning situation were evaluated. Blanket-attached and blanket-nonattached children were assigned to one of three task conditions: (1) mother present, (2) blanket present, (3) no familiar object present. (Author/SB)

Discrimination learning studied in 3-year-olds, indicated that children over 30 months of age did better than younger children, and girls learned faster than boys after the first problem. (ST)

Seven main experiments and three pilot studies were conducted to develop and test theories of transfer of training in children. Initial tests failed to support an incentive model for learning and transfer, but a new model given strong emphasis to the role of context in learning was developed which accounted for a wide range of learning and…