title: Preliminary reliability and validity of a new time-sensitive ADHD symptom scale in adolescents with ADHD.
abstract: OBJECTIVE
  To validate the Time-Sensitive ADHD Symptom Scale (TASS) in the assessment of symptom change during the day in adolescents with attention-deficit/hyperactivity disorder (ADHD).
  
  
  METHODS
  A total of 40 participants with ADHD aged 13 to 17 years completed 1 or 2 visits, 1 to 9 weeks apart. The TASS and the ADHD Rating Scale-IV (ADHD-RS-IV) were completed twice at each visit: at the time of the clinic visit (in-clinic assessment) and 2 to 6 hours afterwards (evening assessment).
  
  
  RESULTS
  Internal consistency of the TASS was high, with Cronbach's alpha coefficients of 0.91 (in-clinic) and 0.90 (evening) for visit 1, and 0.88 (in-clinic) and 0.86 (evening) for visit 2. Pearson's correlation coefficients between the TASS and ADHD-RS-IV were significant at both visits (P < 0.0001). Stability analyses of the TASS found no significant effect between ratings performed at different visits (P = 0.936), but there was a significant effect of the assessment time within visits (P < 0.0001). There was not a significant visit by assessment time interaction (P = 0.924).
  
  
  CONCLUSIONS
  The TASS showed high internal consistency and high concurrent validity with the ADHD-RS-IV. Results of this preliminary study indicate that the TASS is a valid and reliable self-report scale for adolescents with ADHD.
authors: Department of Psychiatry, NYU School of Medicine and Psychiatry Service, NY VA Harbor Healthcare System, New York, NY 10016, USA. lenard.adler@nyumc.org
authors: Lenard A
authors: LA
authors: Adler
authors: David M
authors: DM
authors: Shaw
authors: Thomas J
authors: TJ
authors: Spencer
authors: Jeffrey H
authors: JH
authors: Newcorn
authors: David J
authors: DJ
authors: Sitt
authors: AnaChristina E
authors: AE
authors: Minerly
authors: Jennifer V
authors: JV
authors: Davidow
authors: Stephen V
authors: SV
authors: Faraone
mesh_terms: D000293:Adolescent; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D015588:Observer Variation; D011569:Psychiatric Status Rating Scales / Q000592:standards; D015203:Reproducibility of Results