Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Does actigraphy differentiate ADHD subtypes in a clinical research setting?

A V Dane1, R J Schachar, R Tannock

  • 1Department of Psychiatry, Hospital for Sick Children, Toronto, Ontario, Canada.

Journal of the American Academy of Child and Adolescent Psychiatry
|June 10, 2000
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Publisher Correction: Brain charts for the human lifespan.

Nature·2022
Same author

Brain charts for the human lifespan.

Nature·2022
Same author

Response inhibition and ADHD traits: correlates and heritability in a community sample.

Journal of abnormal child psychology·2013
Same author

Effects of a computerized working memory training program on working memory, attention, and academics in adolescents with severe LD and comorbid ADHD: a randomized controlled trial.

Journal of child psychology and psychiatry, and allied disciplines·2012
Same author

Sex differences in sensorimotor mu rhythms during selective attentional processing.

Neuropsychologia·2010
Same author

Cortical dynamics of selective attention to somatosensory events.

NeuroImage·2009
Same journal

Correction.

Journal of the American Academy of Child and Adolescent Psychiatry·2026
Same journal

Navigating Uncertainty: Facilitating Parent-Child Conversations about Immigration Enforcement-Related Family Separation.

Journal of the American Academy of Child and Adolescent Psychiatry·2026
Same journal

Trauma-Informed Principles on Informing Caregivers of Referrals to Child Protective Services.

Journal of the American Academy of Child and Adolescent Psychiatry·2026
Same journal

Editorial: Parental Support Increases Food Volume in Childhood Avoidant/Restrictive Food Intake Disorder, But What About Food Variety?

Journal of the American Academy of Child and Adolescent Psychiatry·2026
Same journal

Editorial: Bringing Care Home: Intensive Community Services as a Viable Alternative to Adolescent Psychiatric Hospitalization.

Journal of the American Academy of Child and Adolescent Psychiatry·2026
Same journal

Educational Attainment Polygenic Scores and School Performance in Adolescents With Psychiatric Disorders: A Population-Based Analysis of 86,122 Individuals From the iPSYCH2015 Case-Cohort.

Journal of the American Academy of Child and Adolescent Psychiatry·2026
See all related articles

Children with attention-deficit/hyperactivity disorder (ADHD) showed increased activity in the afternoon compared to controls. However, no significant differences in hyperactivity were found between ADHD subtypes, challenging existing diagnostic criteria.

Area of Science:

  • Child psychology
  • Neurodevelopmental disorders
  • Behavioral science

Background:

  • Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder.
  • ADHD is categorized into subtypes, including predominantly inattentive and combined types.
  • Hyperactivity is a key diagnostic feature of ADHD, but its expression may vary.

Purpose of the Study:

  • To objectively compare activity levels between ADHD subtypes (predominantly inattentive and combined) and a control group.
  • To investigate the influence of situational or temporal factors on hyperactivity in ADHD.
  • To evaluate the diagnostic specifications of hyperactivity in ADHD subtypes based on objective measures.

Main Methods:

  • Sixty-four children (20 ADHD predominantly inattentive, 22 ADHD combined, 22 controls) wore actigraphs during a full-day assessment.

Related Experiment Videos

  • Activity levels were measured using actigraphy over two 2-hour intervals (morning and afternoon).
  • Mean actigraph scores were analyzed to compare activity levels across groups and time periods.

    • Main Results:

    • No significant differences in activity levels were observed between groups during the morning session.
    • Children with ADHD exhibited significantly higher activity levels than controls in the afternoon session.
    • There were no significant differences in activity levels between the predominantly inattentive and combined ADHD subtypes.

    Conclusions:

    • Objective activity measures partially support hyperactivity criteria in ADHD but highlight situational/temporal influences.
    • Findings contradict DSM-IV specifications suggesting higher hyperactivity in combined-type ADHD versus predominantly inattentive-type ADHD.
    • The study underscores the complexity of hyperactivity expression in ADHD and suggests limitations in current subtype distinctions.