Table 3.
Results of best-fitting LCGAs in the ADHD sample
| Measure | Stop Signal Reaction Time | Working Memory | Delayed Reward Valuation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||||||
| Class | Class 1 | Class 2 | Class 1 | Class 2 | Class 3 | Class 1 | Class 2 | |||||||
|
| ||||||||||||||
| Class Label | Unimpaired (n = 364) |
Impaired (n = 76) |
Impaired & Recovering (n=137) |
Stably Impaired (n=248) |
High Working Memory (n=68) |
Impaired (n = 229) |
Unimpaired (n = 167) |
|||||||
| Parameter | Est | SE | Est | SE | Est | SE | Est | SE | Est | SE | Est | SE | Est | SE |
|
| ||||||||||||||
| Intercept | 273.3** | 14.6 | 497.5** | 32.4 | 2.5** | 0.6 | 2.6** | 0.4 | 6.4** | 0.5 | −1.29* | 0.65 | −3.49** | 0.72 |
| Slope 1 | −9.77** | 3.3 | −27.9** | 7.7 | 0.9** | 0.2 | 0.2 | 0.1 | −0.2 | 0.2 | −0.48** | 0.16 | −0.62** | 0.17 |
| Slope 2 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | 0.07 | 0.21 | 0.44* | 0.21 |
| Direct Effects | ||||||||||||||
| Sex → Intercept | −14.1 | 18.6 | −14.1 | 18.6 | −1.2** | 0.3 | −1.2** | 0.31 | −1.15** | 0.31 | -- | -- | -- | -- |
| Sex → Slope | 1.8 | 4.1 | 0.7 | 4.1 | 0.4** | 0.1 | 0.4** | 0.10 | 0.35** | 0.10 | -- | -- | -- | -- |
| Medication → Intercept | 1.6 | 17.3 | 1.6 | 17.3 | 0.03 | 0.3 | 0.03 | 0.3 | 0.03 | 0.30 | -- | -- | -- | -- |
| Medication → Slope | 0.7 | 3.9 | 1.8 | 3.9 | −0.1 | 0.1 | −0.1 | 0.1 | −0.1 | 0.1 | -- | -- | -- | -- |
|
| ||||||||||||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
|
| ||||||||||||||
| Intercept Parent Hyp-Imp | 6.37 | 1.86 | 6.66 | 1.71 | 6.47 | 1.75 | 6.52 | 1.78 | 6.06 | 2.19 | 6.40 | 1.90 | 6.41 | 1.80 |
| Slope Parent Hyp-Imp | −0.59 | 0.19 | −0.57 | 0.14 | −0.58 | 0.19 | −0.58 | 0.17 | −0.60 | 0.18 | −0.59 | 0.17 | −0.59 | 0.19 |
| Intercept Parent Int | 7.05 | 1.21 | 7.28 | 1.01 | 6.91 | 1.27 | 7.24 | 1.03 | 6.95 | 1.38 | 7.05 | 1.20 | 7.06 | 1.18 |
| Slope of Parent Int | −0.20 | 0.13 | −0.18 | 0.12 | −0.21 | 0.12 | −0.18 | 0.12 | −0.22 | 0.13 | −0.20 | 0.13 | −0.20 | 0.13 |
| Intercept Teacher Hyp-Imp | 4.67 | 1.17 | 4.85 | 0.99 | 4.70 | 1.12 | 4.74 | 1.10 | 4.54 | 1.27 | 4.66 | 1.17 | 4.72 | 1.15 |
| Slope Teacher Hyp-Imp | −0.53 | 0.13 | −0.51 | 0.12 | −0.53 | 0.14 | −0.52 | 0.13 | −0.53 | 0.11 | −0.52 | 0.12 | −0.52 | 0.14 |
| Intercept Teacher Int | 5.62 | 1.02 | 5.80 | 1.07 | 5.54 | 0.88 | 5.77 | 1.08 | 5.43 | 1.06 | 5.66 | 1.05 | 5.54 | 1.03 |
| Slope Teacher Int | −0.46 | 0.04 | −0.45 | 0.04 | −0.46 | 0.04 | −0.45 | 0.04 | −0.46 | 0.03 | −0.45 | 0.04 | −0.46 | 0.04 |
|
| ||||||||||||||
| % male | 70.1% | 68.4% | 69.8% | 69.8% | 67.7% | 68.1% | 70.7% | |||||||
| % on meds | 55.0% | 64.5% | 57.2% | 59.7% | 58.4% | 55.0% | 59.3% | |||||||
Note:
*
p < .05,
**
p < .01.
Child Sex: 0 = male, 1 = female. Child Medication History: 0= no history of medication, 1= positive history of medication.