Monitoring running-wheel movement using a serial mouse and an IBM-compatible system

A running-wheel-movement-detection system is described for use with an IBM-compatible system and a serial mouse. It is an adaptation of a system developed for use on a Commodore 64. The IBM-compatible system provides obvious advantages in speed, memory, data storage, and programming ease over the earlier Commodore 64 system.     

The course of aggression in first-grade children with and without comorbid anxious symptoms

We studied the course of aggressive behavior in an epidemiologically defined sample of first graders with and without comorbid anxious symptoms. Our primary purpose in doing so was to understand whether the stability of aggression in young children was attenuated or strengthened in the presence of comorbid anxiety. Previous studies of older children and adolescents had produced equivocal findings in this regard. Data on anxious symptoms were obtained through an interview of the children, whereas aggressive behavior was assessed through the use of a teacher interview and peer nominations. Assessments were performed in the fall and spring of first grade. In contrast to children classified as aggressive alone in the fall of first grade, boys and girls classified as aggressive and anxious in the fall of first grade were significantly more likely to be classified as aggressive in the spring in terms of teacher ratings and/or peer nominations of aggression. Thus our findings suggest that the link between early and later aggression may be strengthened in the presence of comorbid anxious symptoms, rather than attenuated. Future studies are needed to identify the mechanisms by which the course of aggression is influenced by the presence of comorbid anxiety.The writing of this paper was supported by the following National Institute of Mental Health grants: Epidemiologic Prevention Center for Early Risk Behavior (P50 MH38725); Periodic Outcome of Two Preventive Trials (1RO1 MH42968). The authors would like to thank the Baltimore Public City School System and the children and parents who participated in this study.     

Is cluttering a motor disorder?

A 15-year-old-boy was referred on account of a fluency disorder that was not thought to be stuttering. The problems of the lack of an adequate definition of cluttering are discussed along with the inherent problems of providing a wide-based assessment of this client group. Assessments were conducted on the motoric, linguistic, and intellectual abilities of this client, and the findings are discussed.     

Parental,child-centered attributions and outcome: A meta-analytic review with conceptual and methodological implications

Eight empirical studies which bear on the relation between parents' child-centered attributions for children's problems and parental satisfaction or child adjustment were meta-analyzed. The parental attributional dimensions of stability and globality garnered the most support as correlates of parental satisfaction and/or children's adjustment; the dimensions of intent, selfish motivation, and blame received initial support and warrant further study. Important methodological and conceptual issues were identified and improvements are suggested. The need for prospective designs aimed at determining the causal relation, if any, between parental attributions and outcome, thorough assessment of attributions and the events which impinge upon them, detailed measurement of symptom and satisfaction variables, a wider array of child diagnoses, and establishment of parental diagnoses, are emphasized.     

Associations between nonparental care experience and preschooler's emotion regulation in the presence of the mother

This study tested predictions concerning the associations between children's nonparental care experiences and emotion regulation. It involved 53 participants (21 girls and 32 boys) of preschool age and their mothers. The children's care experiences ranged from those who were raised exclusively at home to those who had nonparental care experience beginning in early infancy. The participants were observed in a laboratory playroom, and their mothers were asked to complete questionnaires regarding their children's care histories and their current care situations. The children with extensive nonparental care backgrounds were found to be more likely to use self-directed emotion regulation behaviors when faced with a mildly frustrating situation. In the same situation, the children who had experienced minimal nonparental care were found to be more likely to use other-directed emotion regulation behaviors. Additionally, the children who had experienced care settings with large numbers of children in each care group or who had experienced many caregiver changes were more likely to use self-directed emotion regulation behaviors, whereas those who had experienced settings with smaller care groups and fewer caregiver changes were more likely to use other-directed emotion regulation behaviors.     

Substance use and violent behavior in adolescence

The relation between substance use and violent behavior in adolescence is reviewed, and each of five competing models of this relation is examined. I begin by presenting background material on adolescent substance use and adolescent violence. I then describe five different models that have been proposed to explain the association between substance use and violent behavior. Next, I review the adolescent literature concerning substance use and violence, noting methodological weaknesses that have plagued this research. I conclude with an evaluation of the five models and suggestions for future research.     

On the time course of negative priming: Another look

In two experiments, the pattern of persistence of negative priming effects across delay intervals of 500 and 2,500 msec was assessed using a within-subjects, random sequencing of delays. Neill and Valdes (1992; Neill, Valdes, Terry, & Gorfein, 1992) have argued that a within-subject experimental design is required for decay of negative priming to be seen, in contrast to results reported elsewhere (e.g., Tipper, Weaver, Cameron, Brehaut, & Bastedo, 1991) showing stable negative priming effects across delays. In neither experiment was substantial evidence of decay detected, raising questions for the notion that suppression necessarily declines across brief temporal intervals and for the assertion that episodic retrieval is the sole source of negative priming.     

Differentiation of brain damage among low IQ subjects with three projective techniques.

Using a battery of three projective techniques (Rorschach, Hand Test, Bender-Gestalt) only slight discrimination was found between low IQ subjects classified according to the presence or absence of brain trauma (exogenous vs endogenous), while substantial discrimination was obtained between the same subjects categorized in terms of "lower" (60-74) and "higher" (75-89) FS WAIS IQ. All four groups used in this study had been first equated on sex and age. Results were interpreted as supporting the position that some sort of brain impairment underlies most or all retardation. Question was raised concerning the efficacy of projective techniques for diagnosing organicity in subjects of average or better intelligence.     

Children's responses to stories with male and female characters

The sex of the main character was varied in six children's stories which were then read by fourth, sixth and eighth graders. The children answered four questions about the stories. Both boys and girls responded more positively to the questions “Would you like to be (character's name?)” and “Would you like to do the things (character's name) did?” when the main character was a male. Boys preferred stories about males, and this preference increased with grade level. A preference for stories about females was marginally significant only for the older girls. Theoretical and practical implications are discussed.