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21.
Fren T. Y. Smulders Albert Kok J. Leon Kenemans Theodore R. Bashore 《Acta psychologica》1995,90(1-3):97-109
An experiment was conducted to relate individual components of the event-related brain potential to specific stages of information processing in a two-choice reaction time (RT) task in a group of undergraduate students. Specifically, the latency of the P300 component and the lateralized readiness potential (LRP) were studied as a function of variations in stimulus degradation and response complexity. It was hypothesized that degrading the stimulus would delay the P300 and LRP to the same extent as RT, and that increasing response complexity would affect RT but not P300 latency. The extant literature did not permit any hypothesis regarding the effect of response complexity on LRP latency. The two task variables were found to have additive effects on RT. As predicted, variations in stimulus degradation influenced the latencies of both components, whereas alterations in response complexity had no effect on P300 latency. A significant new finding was that the onset latency of the LRP remained unchanged across levels of response complexity. The overall pattern of results supports the notion of temporal selectivity of stage manipulations that is derived from discrete stage models of human information processing. Furthermore, these results refine the functional interpretation of the LRP by indicating that within the conceptual framework of a stage model the processes this component indexes succeed the start of response choice but precede the start of motor programming. 相似文献
22.
The Revised Conners' Parent Rating Scale (CPRS-R): Factor Structure, Reliability, and Criterion Validity 总被引:20,自引:0,他引:20
C. Keith Conners Gill Sitarenios James D. A. Parker Jeffery N. Epstein 《Journal of abnormal child psychology》1998,26(4):257-268
The Conners' Parent Rating Scale (CPRS) is a popular research and clinical tool for obtaining parental reports of childhood behavior problems. The present study introduces a revised CPRS (CPRS-R) which has norms derived from a large, representative sample of North American children, uses confirmatory factor analysis to develop a definitive factor structure, and has an updated item content to reflect recent knowledge and developments concerning childhood behavior problems. Exploratory and confirmatory factor-analytic results revealed a seven-factor model including the following factors: Cognitive Problems, Oppositional, Hyperactivity-Impulsivity, Anxious-Shy, Perfectionism, Social Problems, and Psychosomatic. The psychometric properties of the revised scale appear adequate as demonstrated by good internal reliability coefficients, high test-retest reliability, and effective discriminatory power. Advantages of the CPRS-R include a corresponding factor structure with the Conners' Teacher Rating Scale—Revised and comprehensive symptom coverage for attention deficit hyperactivity disorder (ADHD) and related disorders. Factor congruence with the original CPRS as well as similarities with other parent rating scales are discussed. 相似文献
23.
In order to study the influence of style and subject matter on the development of children's art preferences, 60 randomly selected subjects from three grade levels, with an equal number of males and females, were shown ten color slides of paintings representing five categories of subject matter and two broad categories of style. Results indicated that style was the dominant variable at each grade level, and consistently accounted for more of the overall variance than subject matter. Unexpectedly, no appreciable developmental differences were evident in preference judgments across grade levels observed in this study. 相似文献
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Young, severely maladaptive autistic children with some speech competence were compared to normally developing 3-year-old children of lower and middle class and 5-year-olds of lower class on negation tasks. All subjects were shown 12 sets of cards depicting negative contrasts designed to elicit semantic categories of nonexistence, denial, and rejection and were tested for production, imitation, and comprehension. Syntactic and semantic analysis revealed that autistic children were superior imitators and poor producers but showed skills in comprehension comparable to a 4-year-old's level of functioning. While retarded in some functions, the experimental group produced syntactic structures that were more rigid, suggesting the significantly greater use of imitation as a major strategy in linguistic coding.This work was done at the NYU-Bellevue Medical Center with partial support by NIMH Grant No. MH 07331 to R. K. 相似文献
27.
Larry Michelson Thomas DiLorenzo Theodore Petti 《Journal of psychopathology and behavioral assessment》1981,3(4):253-262
A 7-year-old boy was diagnosed as suffering from childhood depression by two independent psychiatric evaluators who employed the Research Diagnostic Criteria. Multifaceted behavioral observations were performed on target behaviors which were identified as major problematic areas of functioning related to the child's depression. The behavioral assessment strategy included daily monitoring of on-task and disruptive behavior in the classroom, enuresis, and overall hygienic, social, and compliance behaviors as a means of identifying the specific drug-induced effects of an anti-depressant, imipramine. The assimilation and application of behavioral assessment strategies within child psychiatry have been slow and tenuous. Reasons for the resistance include theoretical differences and misconceptions among psychiatric personnel, who, although open to objective evaluations, may wish to employ nonbehavioral treatments such as pharmacologic agents. The primary purpose of this study was to demonstrate the viability of behavioral assessment as an integral adjunct to pharmacologic treatment in a psychiatric setting as a means of gauging the efficacy of a psychiatric intervention. Issues regarding the role of behavioral assessment in psychiatry and, in particular, pharmacologic interventions with depressed children are examined and discussed.This study was supported, in part, by NIMH Grant MH 30915. 相似文献
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Theodore M. Dembroski James M. MacDougall J. Alan Herd Jim L. Shields 《Journal of applied social psychology》1979,9(3):209-228
The present study examined the relationship between the Type A coronaryprone behavior pattern and the magnitude of cardiovascular response induced by varying levels of environmental challenge. In a 2 × 2 experimental design, Type A and B (noncoronary-prone) subjects (n= 80) were randomly assigned to either high or low challenge instructional conditions for both the cold pressor (CP) and a choice reaction time task (RT). Overall, across both tasks, Type A subjects responded with greater systolic blood pressure (SBP) and heart rate (HR) elevation than Type B subjects. While these differences between the Types tended to be larger in the high challenge condition, some differences were also observed under low challenge. Component analyses of the Pattern revealed that high hostile/competitive Type A's responded to both low and high challenge instructions in the CP and RT tasks with physiologic elevations comparable to that displayed by globally defined Type A's receiving high challenge instructions. The present findings tentatively suggest that (a) high hostile/competitive Type A's respond to even mild challenge with enhanced physiologic response; (b) globally defined A's tend to evidence the physiologic elevations when specifically challenged; and (c) Type B's show much smaller physiologic reactions to such challenges. Consistent with previous research, comparison of Type A assessment techniques revealed that the Rosenman diagnostic interview was a better predictor of physiologic response than other questionnaire methods. Two hypotheses are advanced and future research recommended regarding possible relationships between environment, behavior, physiology, and disease. 相似文献