Introduction: Children and young adults with Down syndrome can demonstrate increased behavior problems compared to their typically developing peers through childhood and adolescence. This study aims to: (1) identify common patterns of behaviors in children and young adults with Down syndrome and (2) assess potential medical comorbidities that…

Objective: To use confirmatory factor analysis to test the construct validity of the proposed "DSM-5" symptom model of autism spectrum disorder (ASD), in comparison to alternative models, including that described in "DSM-IV-TR." Method: Participants were 708 verbal children and young persons (mean age, 9.5 years) with mild to severe autistic…

Background: Clinical heterogeneity of autism likely hinders efforts to find genes associated with this complex psychiatric disorder. Some studies have produced promising results by restricting the sample according to the expression of specific familial factors or components of autism. Previous factor analyses of the restricted, repetitive…

Confirmatory factor analyses were conducted of "Diagnostic and Statistical Manual of Mental Disorders", Fourth Edition (DSM-IV) symptoms of common mental disorders derived from structured interviews of a representative sample of 4,049 twin children and adolescents and their adult caretakers. A dimensional model based on the assignment of symptoms…

A sequence of behaviors consisting of appropriate responses, inappropriate responses, or a combination of both can be linked together in a behavior chain. Several operant processes may disrupt behavior chains. For example, one or more members of the behavior chain may be affected when reinforcement is withheld for the last response in the chain…

Behaviors that are appropriate, inappropriate, or a combination of both can be linked together in a behavior chain. When the contingencies for one response change (e.g., reinforcement is withheld for the last response in the chain; the last response is reinforced even if it occurs without the other responses in the chain) or the environmental…

A behavior problem checklist was administered to the teachers of six to eight year old children. Eight factors were identified as Hyperactivity, Disciplinary Problems, Sluggishness, Paranoiac Tendencies, Social Withdrawal, Acting Out, Speech Problems; and Antisocial Tendencies. Three second order factors were identified as Neutroticism,…

Relative prevalence of stereotyped behaviors was studied with 246 children and adults with developmental disabilities. Two staff members completed a 54-item checklist assessing stereotyped behaviors, abnormal focused affections, compulsions, rigidity, savant skills, and defensiveness. Factor analyses produced weak evidence for a general stereotypy…

Research on child influence upon parent behavior motivated the development of a Parent Report of Child Behavior Toward the Parent Inventory. Internal consistency reliabilities of 31 five-item scales ranged from .69 to .95 with a median of .88. Varimax rotation of three principal component factors yielded dimensions of Control, Acceptance versus…

Investigated interactions between stress level of syllables and articulatory difficulty as influences on children's early words. Subjects were 32 two-year olds asked to imitate nonsense words and syllables that varied in articulatory difficulty. Found that both factors had significant effects on aspects of children's imitations. (MOK)

Constructed broad-band factor scales from a factor analysis of the items that comprise the 12 consecutive Personality Inventory for Children clinical-profile scales. The six-factor solution provided sufficiently robust item clusters to develop scales reflecting Undisciplined/Poor Self-Control, Social Incompetence, Internalization/Somatic Symptoms,…

Studied the process of child psychotherapy by means of analyses of client verbal behaviors. Analyses of variables demonstrated the nature of each client's verbal responding as well as their pattern of change. Summarized the overall verbal response behavior of each client best through the factor analyses. (Author)

The project consisted of several independent sub-experiments focusing on factors that affect moral reasoning among young children. Preschool children, following brief training programs, reasoned more maturely about intentionality, punishment, sanctions following behavior, relativity, and immanent justice. Two methods of training were compared. In…

Principal factor analysis and promax rotations were performed on Child Behavior Checklist (CBCL) scores of 2,339 clinically referred Dutch children. Dutch syndromes were very similar to the CBCL cross-informant syndromes derived by T. M. Aschenbach (1991), supporting the cross-cultural generalizability of the CBCL cross-informant syndromes. (SLD)

This study explores the construct validity of the Child Behavior Checklist (CBCL), which was created as a standardized tool for recording the behaviors of children aged 4 through 16 as reported by their parents or caretakers. Since its inception in 1983, the CBCL has been applied and tested on numerous clinical samples, yielding an impressive body…