Subtypes of incarcerated delinquents constructed via cluster analysis

Article Abstract:

Cluster analysis with the MMPI and Jesness Inventory has been used to identify five subtypes of incarcerated juvenile delinquents with homogeneous personality traits. The subtypes are an insecure group, an unsocialized group, a group exhibiting difficulties only with adults, an emotionally stable group, and a group with multiple elevations. Cluster analysis shows that these groups vary with regard to suicidality, substance abuse, explosiveness, delusions, hallucinations, and past sexual abuse. A discriminant function analysis supports the generalizability of this classification to an independent sample.

Juvenile offenders, Cluster analysis

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Assessing medication effects in the MTA study using neuropsychological outcomes

Article Abstract:

The effects of medication on neuropsychological outcomes were examined by using a subsample of the Multimodal Treatment Study of Children with attention deficit/hyperactivity disorder (MTA) and traditional and novel methods to measure participants' performance. Results revealed significant effects of medication across all neuropsychological outcome measures and stimulant medication slowed reaction time (RT) and reduced RT variability on the ex-Gaussian outcome measures.

United States, Science & research, Care and treatment, Attention-deficit hyperactivity disorder, Attention deficit hyperactivity disorder

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Individual differences in cognitive planning on the Tower of Hanoi task: neuropsychological maturity or measurement error?

Article Abstract:

This article investigates the relationship between performance on a game of strategy and neuropsychological development in children. Findings indicate that children's performance on the game did not improve when played a month after the first trial which suggests that it is not a reliable indicator of brain maturation in healthy children.

United Kingdom, Psychological aspects, Statistical Data Included, Child development, Individual differences, Individual differences (Psychology), Psychological games, Planning in children, Problem solving in children, Childhood problem solving

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