Inclusion/Exclusion Criteria for All Experiments
| Group . | Experiments 1–4 . |
|---|---|
| Inclusion Criteria | |
| HC | Ages 18–50 |
| Exclusion Criteria | |
| HC | Clinical history of neurological, major medical or psychiatric disorder |
| fMRI contraindicationsa | |
| Experiment 5 | |
| Inclusion Criteria | |
| HC and ADHD | Ages 12–30 |
| IQ over 80 as per WASI | |
| HC | t score of 60 or lower on the total DSM total ADHD score |
| HC | 3 or more inattentive and 3 or more hyperactive/impulsive DSM symptoms |
| ADHD | t score of 65 or higher on the total DSM total ADHD score |
| ADHD | 6 or more inattentive and 6 or more hyperactive/impulsive DSM symptoms |
| ADHD | Significant symptoms before age 7 and across at least two domains (e.g., home and school/work) |
| Exclusion Criteria | |
| HC and ADHD | Any Axis 1 disorder except for ADHD in the ADHD group |
| HC and ADHD | Clinical history of neurological, major medical of psychiatric disorder |
| HC | History of treatment with psychoactive medication |
| HCa | fMRI contraindications |
| Group . | Experiments 1–4 . |
|---|---|
| Inclusion Criteria | |
| HC | Ages 18–50 |
| Exclusion Criteria | |
| HC | Clinical history of neurological, major medical or psychiatric disorder |
| fMRI contraindicationsa | |
| Experiment 5 | |
| Inclusion Criteria | |
| HC and ADHD | Ages 12–30 |
| IQ over 80 as per WASI | |
| HC | t score of 60 or lower on the total DSM total ADHD score |
| HC | 3 or more inattentive and 3 or more hyperactive/impulsive DSM symptoms |
| ADHD | t score of 65 or higher on the total DSM total ADHD score |
| ADHD | 6 or more inattentive and 6 or more hyperactive/impulsive DSM symptoms |
| ADHD | Significant symptoms before age 7 and across at least two domains (e.g., home and school/work) |
| Exclusion Criteria | |
| HC and ADHD | Any Axis 1 disorder except for ADHD in the ADHD group |
| HC and ADHD | Clinical history of neurological, major medical of psychiatric disorder |
| HC | History of treatment with psychoactive medication |
| HCa | fMRI contraindications |
HC = healthy control.
aExclusion for Experiment 3.