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 | 512.11** | 1.87 | 283.91** | 20.41 | 274.15** | 16.76 | 486.91** | 15.61 |
Level 1 (trial-specific) | ||||||||
Trial | −0.09 | 0.12 | 0.00 | 0.00 | −0.08 | 0.06 | ||
Side | −3.81** | 1.87 | −3.83** | 1.87 | ||||
Level 2 (individual) | ||||||||
Age | 1.25** | 0.22 | 1.26** | 0.03 | ||||
Asian | 16.91** | 5.74 | 16.86** | 5.73 | 14.14** | 2.64 | ||
Black | 20.64** | 11.44 | 20.53** | 11.45 | 23.58** | 5.38 | ||
Hispanic | 9.13** | 6.30 | 9.34** | 6.19 | 14.65** | 2.84 | ||
White | 0a | 0a | 0a | 0a | 0a | 0a | ||
Error rate | −272.10** | 184.83 | −273.22** | 185.21 | ||||
Sleepiness (centered) | 0.11 | 0.59 | 0.12 | 0.22 | ||||
Std. Dev. of Log RT | 1415.86** | 200.67 | 1417.82** | 200.84 | ||||
APOE (0 risk) | −1.39 | 14.60 | 9.08** | 7.45 | 4.54 | 6.87 | ||
(1 risk) | 3.09 | 9.28 | 8.67** | 4.93 | −0.21 | 4.36 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
COMT (0 risk) | −7.05 | 12.53 | −4.18 | 6.51 | −9.05 | 5.86 | ||
(1 risk) | 3.72 | 9.19 | 10.57** | 4.75 | 0.85 | 4.27 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DAT1 (0 risk) | 28.01** | 20.01 | 21.05** | 10.35 | 11.01 | 9.33 | ||
(1 risk) | −0.72 | 7.92 | −6.07** | 4.06 | 1.57 | 3.71 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DBH (0 risk) | −4.41 | 11.12 | −0.95 | 5.86 | −1.01 | 5.20 | ||
(1 risk) | −10.45** | 8.92 | −6.89** | 4.66 | −5.97 | 4.18 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DRD4 (0 risk) | 9.13* | 10.58 | 5.60* | 5.54 | 8.57 | 4.97 | ||
(1 risk) | 12.12** | 9.16 | 11.21** | 4.75 | 13.52** | 4.31 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
APOE (0 risk)*Trial | NS | NS | NS | NS | ||||
COMT (0 risk)*Trial | 0.03 | 0.11 | 0.02 | 0.05 | ||||
(1 risk) | 0.07* | 0.08 | 0.07 | 0.04 | ||||
(2 risk) | 0a | 0a | 0a | 0a | ||||
DAT1 (0 risk)*Trial | NS | NS | NS | NS | ||||
DBH (0 risk)*Trial | NS | NS | NS | NS | ||||
DRD4 (0 risk)*Trial | NS | NS | NS | NS | ||||
Covariance parameters | ||||||||
Repeated measures | 7308.26** | 0.19 | 7339.45** | 0.19 | 8701.69** | 0.23 | ||
Number of parameters | 2 | 31 | 23 | 26 | ||||
Schwarz’s Bayesian criterion (BIC) | −5900.16 | −4716.22 | −4881.78 | −4393.91 |