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There is an increased prevalence of the 7-repeat (7R) allele of the dopamine receptor D4 (DRD4) gene in attention-deficit/hyperactivity disorder (ADHD). However, the population prevalence of the 7R allele varies considerably across ethnicity and is very low in Asians. To test whether this 7R allele/ADHD association still held in a Chinese clinical sample,(More)
PURPOSE To provide preliminary prevalence estimates of common DSM-IV (Diagnostic and Statistical Manual of Mental Disorders-4th Edition) disorders in a sample of Hong Kong Chinese adolescents. METHODS 541 Chinese adolescents were recruited from Grades 7, 8 and 9 of 28 mainstream high schools in Hong Kong (mean age=13.8 years; SD=1.2). The adolescents and(More)
BACKGROUND Children with attention-deficit hyperactivity disorder (ADHD) have difficulties with executive function and impulse control which may improve with age. AIMS To map the brain correlates of executive function in ADHD and determine age-related changes in reaction times and brain volumes. METHOD Attention-deficit hyperactivity disorder and(More)
BACKGROUND Despite the huge youth population, there is a lack of psychiatric diagnostic instruments with reported psychometric properties in Chinese. This study reports the development of the Chinese version of DISC-IV and examines its test-retest reliability. METHOD Seventy-eight parents and 79 youths (mean age 13.1 years) attending child psychiatric(More)
BACKGROUND Psychometric properties of the Chinese version of CBCL, TRF, and YSR were understudied. This study aimed at examining their test-retest reliability and criterion validity. METHODS Three Chinese community and clinic samples were recruited in Hong Kong. The parents, teachers, and youths respectively completed the CBCL, TRF, and YSR. RESULTS The(More)
INTRODUCTION The DISC Predictive Scales-4.32 (DPS-4.32) were short-forms of the Diagnostic Interview Schedule for Children-IV (DISC-IV). METHOD The psychometric properties of DPS-4.32 were tested on two Chinese samples: a clinic sample of 83 children/youths, and a community sample of 541 youths. RESULTS Both Parent and Youth DPS-4.32 exhibited(More)
service Email alerting click here the top right corner of the article or Receive free email alerts when new articles cite this article-sign up in the box at Children with attention-deficit hyperactivity disorder (ADHD) are impaired in a well-validated test of response inhibition known as the 'stop' signal task. 1,2 In an extension of the stop task, the(More)
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