Table 4.
Multiple Regression Analyses Examining SCT and ADHD.
| Step 1 | Step 2 | |||||||
|---|---|---|---|---|---|---|---|---|
| b | SE | β | t | b | SE | β | t | |
| DV: ADHD | R2 = .65 | |||||||
| SCT | .66 | .10 | .65 | 6.38** | - | - | - | - |
| DV: ADHD-I | R2 = .62 | R2 = .67, ΔR2 = .04 | ||||||
| ADHD-H | 1.13 | .16 | .79 | 7.04** | .99 | .17 | .69 | 5.82** |
| SCT | - | - | - | - | .29 | .15 | .23 | 1.97 |
| DV: ADHD-HI | R2 = .62 | R2 = .62, ΔR2 < .01 | ||||||
| ADHD-I | .55 | .08 | .79 | 7.04** | .55 | .09 | .78 | 5.82** |
| SCT | - | - | - | - | .01 | .12 | .02 | .11 |
Note. ADHD is attention-deficit/hyperactivity disorder; ADHD-I is ADHD, predominantly inattentive presentation; ADHD-HI is ADHD, predominantly hyperactivity/impulsivity presentation; SCT is sluggish cognitive tempo.
*
p < .05,
**
p < .001.