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Based on parent and teacher ratings of primary school children on a scale comprising the 18 DSM-IV AD/HD symptoms, this study used confirmatory factor analysis to compare three models: all items in one factor; inattention in one and hyperactivity and impulsivity items in a separate factor; and inattention, hyperactivity, and impulsivity items in three(More)
Confirmatory factor analysis was used to model a multitrait-multisource design to evaluate the construct validity of attention-deficit/hyperactivity disorder (ADHD) rating scales. The 2 trait factors were the ADHD inattention and hyperactivity/impulsivity dimensions. The 2 source factors were parents and teachers. In Study 1, parents and teachers rated(More)
The graded response model (GRM), which is based on item response theory (IRT), was used to evaluate the psychometric properties of the inattention and hyperactivity/impulsivity symptoms in an ADHD rating scale. To accomplish this, parents and teachers completed the DSM-IV ADHD Rating Scale (DARS; Gomez et al., Journal of Child Psychology and Psychiatry, 40,(More)
Mother-child interaction, and parent ratings of child noncompliance and defiance among hyperactive boys with conduct problems (H/CP), hyperactive boys without conduct problems (H), and normal boys (N) were compared. Results indicated more negative mother-child interactions and more noncompliance in the H/CP group than in the other two groups. The H group(More)
OBJECTIVE To examine the role of stoicism, self-efficacy and perceived stigma in predicting help-seeking by rural residents, for mental health problems. METHOD A cross-sectional community survey was conducted with a sample of 467 rural residents (58% female), who completed self-report questionnaires assessing current levels of symptomatology, disability,(More)
OBJECTIVE The aims of the study were to examine differential symptom functioning (DSF) and agreement across parent and teacher ratings for the DSM-IV ADHD inattention (IA) and hyperactivity/impulsivity (HI) symptoms, listed in the Disruptive Behavior Rating Scale (DBRS). METHOD DSF was examined using a parametric technique involving ordinal logistic(More)
(2015). Duration-dependent effects of the BDNF Val66Met polymorphism on anodal tDCS induced motor cortex plasticity in older adults: a group and individual perspective. General rights Copyright for the publications made accessible via the Queen's University Belfast Research Portal is retained by the author(s) and / or other copyright owners and it is a(More)
The attentional performance, activity, and off-task behavior of hyperactive boys with and without conduct problems and normal boys were compared on a cancellation task under three conditions: when performing the task alone, with mother present, and with experimenter present. Results indicated that both the hyperactive groups achieved poorer attentional(More)
Confirmatory factor analysis (CFA) was used to model a multitrait by multisource matrix to determine the convergent and discriminant validity of measures of attention-deficit hyperactivity disorder (ADHD)-inattention (IN), ADHD-hyperactivity/impulsivity (HI), and oppositional defiant disorder (ODD) in 917 Malaysian elementary school children. The three(More)
Confirmatory factor analysis was used to model a multitrait (ADHD-inattention and hyperactivity/ impulsivity) by multisource (teachers and parents) design across a 3-month interval in a sample of 360 Australian elementary school children. The purpose was to evaluate the convergent and discriminant validity of the ADHD-inattention (IN) and(More)