In obsessive-compulsive disorder (OCD), functional behaviors such as checking that a door is locked become dysfunctional, maladaptive, and debilitating. However, it is currently unknown how aversive and appetitive motivations interact to produce functional and dysfunctional behavior in OCD. Here we show a double dissociation in the effects of…

Findings are consistent with the hypothesis of an input processing deficit in autistic children. Autistic children were insensitive to differences in the structures present and tended to impose their own simple stereotyped patterns. Normal children imposed such patterns in the absence of structured input only. Paper reports work which has been…

This document presents Part I of a two-part study which sought to ascertain the relationship of grade level, achievement level, sex, and method of presentation to the various bases by which children classify geometric concepts. Two tasks, administered consecutively to 96 subjects in grades five, eight and eleven, consisted of the sequential…

This document, Part II of a two-part study, is the summary chapter of a report which sought to ascertain the relationship of grade level, achievement level, sex, and method of presentation to the various bases by which children classify geometric concepts. Two tasks, administered consecutively to 96 subjects in grades five, eight, and eleven,…

This article illustrates how a cluster analysis can be conducted, validated, and interpreted. Data normed for a behavioral assessment instrument with 14 scales on a nationally representative sample of U.S. school children were utilized. The discussion explores the similarity index, cluster method, cluster typology, cluster validity, cluster…

This guide is designed to help teachers create test items that measure a variety of higher level thinking abilities. Part One, "Foundations for Item Writing," provides a context for item writing. Chapter 1 provides an overview of the book and defines basic concepts, principles, and terminology. Chapter 2 integrates research literature to…

Criteria and methods for developing a taxonomy for different situational categories are presented. (CK)

The basic hypotheses were (1) children with detailed exposure to objects would increase in knowledge of the complexity of objects but would also exhibit a corresponding increase in object-picture discrepancy, (2) children exposed only to pictures would show minimal object-picture discrepancy but would exhibit a lower response repertoire, and (3)…

The labeling theory of deviance is used as a basis from which to comment on the dynamics of the labeling process in schools in general. Several research studies have demonstrated the self-fulfilling prophecy of labeling techniques. Four types of behavior can be distinguished: behavior that breaks a rule and is labeled as deviant; behavior that…