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 | 491.83** | 1.70 | 267.25** | 18.52 | 271.83** | 15.10 | 454.62** | 14.37 |
Level 1 (trial-specific) | ||||||||
Trial | −0.03 | 0.11 | −0.06** | 0.03 | −0.03 | 0.05 | ||
Side | −1.98** | 1.67 | −1.98** | 1.68 | ||||
Level 2 (individual) | ||||||||
Age | 1.24** | 0.20 | 1.24** | 0.20 | ||||
Asian | 9.05** | 5.16 | 9.06** | 5.16 | 5.43* | 2.39 | ||
Black | 24.40** | 10.05 | 24.37** | 10.06 | 27.33** | 4.76 | ||
Hispanic | 2.94 | 5.58 | 2.95 | 5.59 | 8.24** | 2.53 | ||
White | 0a | 0a | 0a | 0a | 0a | 0a | ||
Error rate | −306.56** | 164.62 | −304.52** | 164.75 | ||||
Sleepiness (centered) | 0.21 | 0.53 | 0.21 | 0.53 | ||||
Std. Dev. of Log RT | 1324.27** | 179.17 | 1322.26** | 179.32 | ||||
APOE (0 risk) | 5.68 | 13.31 | 14.62** | 6.72 | 12.73* | 6.31 | ||
(1 risk) | 8.93* | 8.43 | 9.50** | 4.42 | 6.81 | 3.99 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
COMT (0 risk) | −0.35 | 11.47 | −2.33 | 6.00 | −2.71 | 5.40 | ||
(1 risk) | 14.00** | 8.39 | 10.79** | 4.46 | 10.62** | 3.93 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DAT1 (0 risk) | 33.59** | 18.18 | 20.90** | 9.38 | 17.75* | 8.54 | ||
(1 risk) | −1.81 | 7.21 | −3.86* | 3.71 | 0.31 | 3.41 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DBH (0 risk) | 3.72 | 10.15 | 4.26 | 5.31 | 6.76 | 4.78 | ||
(1 risk) | −10.45** | 8.11 | −7.13** | 4.17 | −6.41 | 3.82 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DRD4 (0 risk) | 6.17 | 9.59 | 2.86 | 4.97 | 5.39 | 4.54 | ||
(1 risk) | 15.53** | 8.36 | 10.90** | 4.27 | 17.08** | 3.96 | ||
(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 | NS | NS | NS | NS | ||||
Covariance parameters | ||||||||
Repeated measures | 5982.33** | 0.16 | 5992.84** | 0.16 | 7201.47** | 0.20 | ||
Number of parameters | 2 | 31 | 23 | 26 | ||||
Schwarz’s Bayesian criterion (BIC) | −6286.49 | −5057.25 | −5216.91 | −4705.49 |