From: Genetic contributions to attentional response time slopes across repeated trials
Parameter | Empty model | Full model | Non-significant interaction removed | Covariates removed | ||||
---|---|---|---|---|---|---|---|---|
Mean | SE | Mean | SE | Mean | SE | Mean | SE | |
Fixed effects | ||||||||
Intercept | 466.98** | 1.58 | 273.63** | 17.67 | 269.35** | 14.91 | 433.08** | 13.48 |
Level 1 (trial-specific) | ||||||||
Trial | −0.04 | 0.11 | −0.01 | 0.05 | −0.04 | 0.05 | ||
Side | −1.98** | 1.59 | −1.99** | 1.60 | ||||
Level 2 (individual) | ||||||||
Age | 0.95** | 0.19 | 0.95** | 0.19 | ||||
Asian | 15.14** | 4.90 | 15.16** | 4.90 | 11.99** | 2.22 | ||
Black | 22.05** | 9.68 | 22.08** | 9.69 | 24.30** | 4.49 | ||
Hispanic | 4.94* | 5.37 | 4.94 | 5.37 | 9.94** | 2.39 | ||
White | 0a | 0a | 0a | 0a | 0a | 0a | ||
Error rate | −299.52** | 155.79 | −299.90** | 155.87 | ||||
Sleepiness (centered) | 0.29 | 0.50 | 0.29 | 0.50 | ||||
Std. Dev. of Log RT | 1124.44** | 1548.55 | 1123.96** | 170.42 | ||||
APOE (0 risk) | 5.63 | 12.82 | 7.18** | 6.42 | 10.95 | 5.94 | ||
(1 risk) | 8.05* | 8.11 | 9.85** | 4.21 | 5.57 | 3.76 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
COMT (0 risk) | −11.05** | 10.99 | −3.16 | 5.67 | −13.25* | 5.06 | ||
(1 risk) | 4.12 | 8.08 | 8.78** | 4.23 | 1.51 | 3.70 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DAT1 (0 risk) | 30.71** | 17.51 | 22.85** | 8.95 | 17.87* | 8.04 | ||
(1 risk) | 3.00 | 6.94 | −1.62 | 3.53 | 4.57 | 3.20 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DBH (0 risk) | 3.06 | 9.78 | 3.20 | 5.05 | 4.72 | 4.51 | ||
(1 risk) | −7.27* | 7.80 | −5.83** | 3.98 | −4.17 | 3.59 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DRD4 (0 risk) | 11.49** | 9.26 | 10.91** | 8.95 | 11.34** | 4.29 | ||
(1 risk) | 14.03** | 8.03 | 13.43** | 7.77 | 15.94** | 3.72 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
APOE (0 risk)*Trial | NS | NS | NS | NS | ||||
COMT (0 risk)*Trial | NS | NS | NS | NS | ||||
DAT1 (0 risk)*Trial | NS | NS | NS | NS | ||||
DBH (0 risk)*Trial | NS | NS | NS | NS | ||||
DRD4 (0 risk)*Trial | −0.09* | 0.08 | −0.08* | 0.08 | −0.09* | 0.04 | ||
(1 risk) | −0.04 | 0.07 | −0.03 | 0.07 | −0.04 | 0.03 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
Covariance parameters | ||||||||
Repeated measures | 5519.27** | 0.16 | 5525.59** | 0.16 | 6344.33** | 0.18 | ||
Number of parameters | 2 | 31 | 23 | 26 | ||||
Schwarz’s Bayesian criterion (BIC) | −6453.45 | −5096.70 | −5223.97 | −4837.26 |