Specificity of reference patterns in depressive thinking: agency and object roles in self-representation

This study investigated A. T. Beck's (1970) negative cognitive triad as a model of depressive thinking. A mixed clinical sample (N = 126) completed the Sentence Completion Test for Depression (SCD) and self-report measures of depression and anxiety. Two reference patterns were tested: agency roles, people who are the source of thoughts, feelings, and actions (self and others); and object roles, points of reference location (self, other, world, future, and past). Cognitive effects were highly specific to depression. With self in agent role, significant correlations were observed with negative self, world, and future references but not with other people or the past. With others in agent role, only negative self references were correlated with depression (e.g., "Some people would not ... put me out if I was on fire"), suggesting an interpersonal extension to the negative cognitive triad.     

Adaptation to optically produced curvature of frontal planes

Attention, Perception, & Psychophysics - A new kind of adaptation was discovered, namely, to glasses that cause frontal planes to appear concave. The effect of this adaptation can be observed...     

Basing the treatment of stereotypic and self-injurious behaviors on hypotheses of their causes.

Stereotypic and self-injurious behaviors are common forms of maladaptive responding demonstrated by severely handicapped persons. Various review papers suggest that no single treatment procedure is universally effective. Although there may be many reasons for this finding, one could be that people engage in these behaviors for various reasons, and that procedures that are incompatible with the cause of the behavior are unlikely to be effective. These studies also suggest many hypotheses for the development and maintenance of these behaviors, three of which are the self-stimulation, positive reinforcement, and negative reinforcement hypotheses. The purpose of this paper was to determine whether one of these hypotheses could be matched to the cause of the behavior and used as an effective treatment procedure. We therefore compared one hypothesis with one other for 3 subjects in a three-phase study. During baseline, data were taken in two classrooms for each subject, and a judgement was made about the hypothesis most likely to be related to the cause of the behavior. During the second phase, a treatment based on that hypothesis was used in one classroom, and a treatment based on another hypothesis was used in the second classroom. During the third phase, the treatment that was most effective in the second phase was used in both classrooms. Results showed that a successful treatment program can be developed on an hypothesis of why the behavior occurred during baseline. Results are discussed in terms of supporting the argument that treatment programs should be based on a functional analysis of the behavior in its environmental context.     

Social networks and adult social identities: Profiles and correlates of support and rejection

The growth of interest in social networks has underscored the need for integrative analyses of network dimensions. A three-pronged strategy to achieve this objective was pursued in a study of 261 married women nurses. First, network variables related to important adult social identities were differentiated. Factor analyses revealed four network interaction factors: work support, work rejection, general support, and general rejection. An additional factor analysis differentiated work associates from nonwork network members. Second, cluster analysis of these factor scores identified five different network profiles. The profiles differed in the importance of the woman's work to her nonwork ties as well as the frequency and pattern of different positive and negative interactions. Third, individuals with these contrasting network profiles differed on levels of life satisfaction and psychological symptomatology. The discussion emphasizes social network differences within the broader context of the ecology of human development.     

A simple technique for improving the quality of parameter estimates in learning hierarchy validation studies

Learning hierarchy research has been characterized by the use of ad hoc statistical procedures to determine the validity of postulated hierarchical connections. The two most substantial attempts to legitimize the procedure are due to White & Clark and Dayton & Macready, although both of these methods suffer from serious inadequacies. Data from a number of sources is analyzed using a restricted maximum likelihood estimation procedure and the results are compared with those obtained using the method suggested by Dayton and Macready. Improved estimates are evidenced by an increase in the computed value of the log likelihood function.     

Delayed neurotoxicity associated with therapy for children with acute lymphoblastic leukemia

Most children diagnosed today with acute lymphoblastic leukemia (ALL) will be cured. However, treatment entails risk of neurotoxicity, causing deficits in neurocognitive function that can persist in the years after treatment is completed. Many of the components of leukemia therapy can contribute to adverse neurologic sequelae, including craniospinal irradiation, nucleoside analogs, corticosteroids, and antifolates. In this review, we describe the characteristic radiographic findings and neurocognitive deficits seen among survivors of childhood ALL. We summarize what is known about the pathophysiology of delayed treatment-related neurotoxicity, with a focus on the toxicity resulting from pharmacologic disruption of folate physiology within the central nervous system. Finally, we suggest testable strategies to ameliorate the symptoms of treatment-related neurotoxicity or decrease its incidence.     

Defining features of natural kinds and artifacts

Two experiments investigated the role of three types of features (physical characteristics, functions, and chromosomal/molecular structure) in determining membership in natural kind and artifact categories. In the first, subjects decided if an object X would still be an X if it were different in one type of feature. A significant interaction was found between word type and change type, with the effects of chromosomal/molecular changes significantly greater for natural kinds than for artifacts, and the effects of functional changes significantly greater for artifacts than natural kinds. In the second experiment, subjects judged whether something would be an X if it were unlike instances of X in two of the above types of features, but like instances of X in one. There was again a significant interaction, with the effects of chromosomal/molecular features significantly greater for natural kinds than for artifacts, and the effects of functional changes significantly greater for artifacts than for natural kinds. These results suggest that chromosomal/molecular features define membership in natural kind categories and functional features define membership in artifact categories. The implications of these findings for the meaning of defining features are also discussed.The first experiment was conducted by the first author as part of a senior comprehensive exercise at Carleton College. We thank Kathleen Galotti, Matthew Gish, Neil Lutsky, and an anonymous reviewer for comments on earlier drafts of this article.     

Adolescent coping and support across multiple social environments

This paper considers how research on stress, coping, and social support in adolescence may be informed by a social ecological perspective. Two case studies are presented which examine contrasting strategies by which adolescents at risk may cope successfully. One strategy focuses on the use of a strong peer social network, the other on the use of school involvements. In both cases, the analyses emphasize coping and social network processes across multiple social environments. Preventive social-community interventions are suggested to circumvent potential trouble spots associated with the use of these strategies.