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 | 477.28** | 1.91 | 293.25** | 22.29 | 273.05** | 18.43 | 493.33** | 16.64 |
Level 1 (trial-specific) | ||||||||
Trial | −0.19** | 0.13 | −0.04* | 0.05 | −0.19** | 0.06 | ||
Side | −0.61 | 2.02 | −0.61 | 2.02 | ||||
Level 2 (individual) | ||||||||
Age | 1.17** | 0.24 | 1.17** | 0.24 | ||||
Asian | 8.72** | 6.19 | 8.71** | 6.20 | 4.84 | 2.76 | ||
Black | 12.48* | 12.25 | 12.45 | 12.25 | 14.13* | 5.58 | ||
Hispanic | 0.68 | 6.80 | 0.71 | 6.80 | 6.62* | 2.97 | ||
White | 0a | 0a | 0a | 0a | 0a | 0a | ||
Error rate | −252.03** | 197.47 | −251.97** | 197.60 | ||||
Sleepiness (centered) | 0.72** | 0.64 | 0.73** | 0.64 | ||||
Std. Dev. of Log RT | 1223.84** | 215.62 | 1224.63** | 215.76 | ||||
APOE (0 risk) | 6.57 | 15.98 | 12.47** | 8.11 | 12.08 | 7.27 | ||
(1 risk) | 1.92 | 10.10 | 9.10** | 5.33 | −0.80 | 4.59 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
COMT (0 risk) | −14.77* | 13.69 | −8.43** | 7.19 | −18.57** | 6.19 | ||
(1 risk) | 2.49 | 10.06 | 7.65** | 5.36 | −1.92 | 4.52 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DAT1 (0 risk) | 37.45** | 21.89 | 46.02** | 20.55 | 20.64* | 9.88 | ||
(1 risk) | 8.89* | 8.65 | 10.10** | 8.57 | 10.28** | 3.92 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DBH (0 risk) | −5.28 | 12.17 | 2.22 | 6.40 | −3.16 | 5.51 | ||
(1 risk) | −10.52 | 9.73 | −8.29** | 5.04 | −6.73 | 4.41 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DRD4 (0 risk) | 0.23 | 11.50 | 1.10 | 5.99 | −0.28 | 5.23 | ||
(1 risk) | 3.37 | 10.02 | 8.39** | 5.16 | 4.66 | 4.55 | ||
(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 | −0.15 | 0.19 | −0.23** | 0.17 | −0.15 | 0.09 | ||
(1 risk) | −0.08** | 0.07 | −0.10** | 0.07 | −0.08* | 0.03 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DBH (0 risk)*Trial | NS | NS | NS | NS | ||||
DRD4 (0 risk)*Trial | NS | NS | NS | NS | ||||
Covariance parameters | ||||||||
Repeated measures | 8836.79** | 0.24 | 8848.44** | 0.24 | 9931.41** | 0.27 | ||
Number of parameters | 2 | 31 | 23 | 26 | ||||
Schwarz’s Bayesian criterion (BIC) | −5496.49 | −4197.00 | −4322.01 | −3984.53 |