Table 1.
Demographic information, number of included trials, and clinical information
| Total Sample | ADHD | Typically developing | Group Difference | |
|---|---|---|---|---|
| Mean (SD) | p | |||
| AGE | 10.46 (1.35) | 10.62 (1.49) | 10.36 (1.27) | .428 |
| % Female | 28% | 35% | 24% | .366 |
| SES | 4.19 (0.96) | 3.95 (0.95) | 4.33 (0.94) | .105 |
| IQ | 9.76 (2.39) | 9.63 (3.19)ǂ | 9.81 (2.00) | .786 |
| VALID TRIALS | ||||
| HAPPY | 6.89 (1.38) | 6.52 (1.48) | 7.09 (1.29) | .098 |
| ANGRY | 6.64 (1.55) | 6.35 (1.72) | 6.82 (1.43) | .221 |
| FEARFUL | 6.15 (1.85) | 5.81 (1.77) | 6.35 (1.89) | .237 |
| % LOST SAMPLES | 0.09 (0.16) | 0.09 (0.16) | 0.10 (0.16) | .742 |
| PARENT RATINGS | ||||
| Inattentive | 0.92 (0.78) | 1.74 (0.64) | 0.44 (0.33) | <.001*** |
| Hyperactive/impulsive | 0.78 (0.81) | 1.65 (0.67) | 0.27 (0.27) | <.001*** |
| ADHD (combined) | 0.85 (0.77) | 1.70 (0.59) | 0.36 (0.25) | <.001*** |
| ODD | 0.65 (0.60) | 1.09 (0.71) | 0.39 (0.32) | <.001*** |
| CD | 0.08 (0.16) | 0.16 (0.21) | 0.03 (0.08) | <.001*** |
| CU | 26.27 (4.91) | 25.56 (4.69) | 26.70 (5.03) | .342 |
| TEACHER RATINGS | ||||
| Inattentive | 0.76 (0.66) | 1.30 (0.60) | 0.48 (0.50) | <.001*** |
| Hyperactive/impulsive | 0.55 (0.70) | 1.05 (0.81) | 0.29 (0.46) | <.001*** |
| ADHD (combined) | 0.70 (0.73) | 1.29 (0.80) | 0.38 (0.45) | <.001*** |
| ODD | 0.39 (0.64) | 0.85 (0.80) | 0.15 (0.35) | <.001*** |
| CD | 0.08 (0.23) | 0.21 (0.36) | 0.01 (0.05) | .002** |
| SDQ Emotional problems | 1.33 (1.91) | 2.00 (2.00) | 0.97 (1.78) | .056 |
| SDQ Peer problems | 1.20 (1.71) | 2.26 (2.16) | 0.64 (1.10) | <.001*** |
| SDQ Hyperactivity | 4.42 (2.61) | 6.47 (2.72) | 3.33 (1.79) | <.001*** |
| SDQ Prosocial | 11.82 (2.67) | 9.84 (2.54) | 12.86 (2.11) | <.001*** |
| SDQ Total | 8.05 (6.23) | 13.00 (6.35) | 5.44 (4.35) | <.001*** |
Note: ODD = Oppositional Defiant Disorder; CD = Conduct Disorder; CU = Callous/unemotional; SDQ = Strength and Difficulties Questionnaire. IQ scores represent the mean scaled scores of the block design and information subtests from the WISC-IV, according to published national norms (M = 10; SD = 3). ǂ IQ scores were missing for seven children with ADHD. **p < .1. ***p <.001.