The purpose of this study was to determine the effect of the distinctiveness of stimulus cues on the relevant and irrelevant dimensions - both in original learning and in transfer - on the learning of intradimensional shifts by retarded subjects. (Author)

Five-year-old children who failed pretests of conservation of Number, Length, Mass, and Liquid Amount, but who possessed counting ability and knowledge of the terms "same" and "different" underwent Training and Conservation Posttests. (Author/CS)

Results indicate that children's preferences were relatively stable over time. (Authors/MB)

Study found that stimulus presence during a delay of reinforcement interval enhanced performance, and to a large extent prevented the usual delay-produced decrement. (Authors)

Recent research has suggested that the use of the shift effect as a measure of encoding is critically dependent upon its properties as a psychological phenomenon. Examines this interrelation in light of data from a simple experiment. (Author/RK)

Social-emotional and rational-cognitive explanations of group risky shift on choice dilemmas (hypothetical life situations) were evaluated by comparing shift in groups of low Mach (emotional) and high Mach (non-emotional) subjects. Effects of Machiavellian beliefs on social functioning are examined. Group composition was not observed to affect…

Two experiments with five individuals having severe mental retardation identified some problems and limits in training reversals of previously learned discrimination tasks using stimulus control shaping methodology. (DB)

Presents a theoretical account of human shift learning with the use of neural network tools. Details how simulations using the cascade-correlation algorithm which show that networks can capture the regularities of the discrimination shift literature better than existing psychological theories. Suggests that human developmental differences in shift…

The authors used state-trace methodology to investigate whether a single dimension (e.g., strength) is sufficient to account for recall and judgments of learning (JOLs) or whether multiple dimensions (e.g., intrinsic and extrinsic factors) are needed. The authors separately manipulated the independent variables of intrinsic and extrinsic cues,…

Recent findings suggest a right hemispheric dominance in gaze-triggered shifts of attention. The aim of this study was to clarify the dominant hemisphere in the gaze processing that mediates attentional shift. A target localization task, with preceding non-predicative gaze cues presented to each visual field, was undertaken by 44 healthy subjects,…

The authors' goals in this article are to (a) describe a new task for the assessment of shifting attention between different affective stimuli, The Children's Attentional Shifting Task (CAST); (b) present the theoretical background for the development of the CAST; and (c) report initial information on the developmental appropriateness and validity…

Using a simple change detection task involving vertical and horizontal stimuli, I. M. Thornton and D. Fernandez-Duque (2000) showed that the implicit detection of a change in the orientation of an item influences performance in a subsequent orientation judgment task. However, S. R. Mitroff, D. J. Simons, and S. L. Franconeri (2002) were not able…

Background/Context: The nationwide preoccupation with accountability continues to grow, with teacher credentialing programs facing growing scrutiny through state-mandated accountability systems. In response to Senate Bill 2042 passed by the California state legislature in 1998, the California Commission for Teacher Credentialing (CCTC) established…