ADHD is classified as what type of disorder?
A neurodevelopmental disorder
What are the two core dimensions of ADHD?
Inattention and Hyperactivity-Impulsivity
What is meant by inattention in ADHD?
Difficulty sustaining attention, selective attention, and attentional capacity
Give examples of inattention symptoms.
Easily distracted
Forgetful
Difficulty sustaining attention in tasks or play
What does hyperactivity-impulsivity include?
Hyperactivity
Behavioural impulsivity
Cognitive impulsivity
Emotional impulsivity/dysregulation
Give examples of hyperactivity-impulsivity symptoms.
Fidgeting
“On the go” or “driven by a motor”
Talks excessively
How many symptoms are required for an ADHD diagnosis (DSM-5)?
6 or more inattention symptoms and/or
6 or more hyperactivity-impulsivity symptoms
At what age must ADHD symptoms be present before?
Before age 12
In how many settings must symptoms be present?
Two or more settings (e.g., home, school, work)
What areas of functioning must ADHD symptoms affect?
Social, academic, or occupational functioning
What must ADHD symptoms NOT be better explained by?
Another medical or psychiatric disorder
What are the three ADHD presentation types?
Predominantly Inattentive (ADHD-PI)
Predominantly Hyperactive-Impulsive (ADHD-HI)
Combined Presentation (ADHD-C)
What characterizes ADHD-PI?
Mainly inattention symptoms
What characterizes ADHD-HI?
Mainly hyperactivity-impulsivity symptoms
What characterizes ADHD-C?
Both inattention and hyperactivity-impulsivity symptoms
Are there gender differences in ADHD prevalence?
Yes, prevalence differs by gender
often discussed as ADHD being diagnosed more frequently in males, especially in childhood
Why is SES important when studying ADHD prevalence?
SES is associated with differences in diagnosis, access to care, and outcomes
What does “developmental course” mean?
How ADHD symptoms emerge and change over time
Can signs of ADHD be present in infancy?
Yes, possible signs may be present at birth
What early signs of ADHD may appear in infancy?
Irritability
Anger
Difficult temperment
What does “etiology” mean?
The causes and origins of a disorder
Why are multiple theories needed to explain ADHD?
Because genetic, biological, environmental, and developmental factors all contribute
What types of studies support genetic influences in ADHD?
Adoption studies
Twin studies
Specific gene studies
What do twin studies show about ADHD?
Higher concordance in identical twins, but not 100%