Investigated was double responding as a technique which facilitates oddity discrimination under conditions of stimulus response discontiguity using three groups each with 12 educable mentally handicapped subjects (13.1 to 16.5 years). (Author/DB)

The age effect in this study was such that younger children required proportionately more experience with reward than nonreward before they were able to improve their performance on reward problems over six sessions. (Author)

Purpose of this experiment was to explore the effects of pre- and postshift stimulus similarity, type of shift, and difficulty of discrimination in the standard solution shift - concept identification paradigm. (Authors/CB)

Results offer strong support to the notion that ontogenetic changes occur in the tendency for humans to prefer an Intradimensional over an Extradimensional choice in an optional discrimination shift paradigm. (Authors)

Infants of 6 months and older can be said to have discriminated between different orientations of the same form. (Author)

Sixty mentally retarded children (mean chronological age 19.4 years, mean mental age 5.2 years) were analyzed on their discrimination of 116 colored action pictures. (Author)

A child's history of reinforcement is regarded as setting a standard that determines what current rates of reinforcement will be deprivational or satiational for him. (Author)