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 | 477.68** | 1.65 | 263.25** | 18.44 | 268.68** | 15.02 | 433.18** | 13.97 |
Level 1 (trial-specific) | ||||||||
Trial | 0.02 | 0.11 | −0.02 | 0.03 | 0.02 | 0.05 | ||
Side | −0.56 | 1.68 | −0.57 | 1.67 | ||||
Level 2 (individual) | ||||||||
Age | 1.08** | 0.20 | 1.08** | 0.19 | ||||
Asian | 10.84** | 5.14 | 10.84** | 5.13 | 7.81** | 2.34 | ||
Black | 19.90** | 10.10 | 19.87** | 10.09 | 22.12** | 4.70 | ||
Hispanic | 3.94 | 5.63 | 3.93 | 5.63 | 9.24** | 2.51 | ||
White | 0a | 0a | 0a | 0a | 0a | 0a | ||
Error rate | −248.00** | 164.59 | −248.43** | 164.46 | ||||
Sleepiness (centered) | 0.36 | 0.53 | 0.36 | 0.53 | ||||
Std. Dev. of Log RT | 1200.33** | 179.18 | 1200.84** | 179.03 | ||||
APOE (0 risk) | 11.42** | 13.20 | 13.56** | 6.72 | 16.87** | 6.14 | ||
(1 risk) | 10.96* | 8.36 | 11.37** | 4.42 | 8.35* | 3.88 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
COMT (0 risk) | −4.90 | 11.34 | −5.18* | 5.96 | −7.87 | 5.24 | ||
(1 risk) | 10.25** | 8.32 | 9.28** | 4.43 | 6.57 | 3.82 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DAT1 (0 risk) | 32.17 | 18.08 | 24.02** | 9.38 | 17.47* | 8.33 | ||
(1 risk) | 3.10 | 7.15 | −0.74 | 3.70 | 4.91 | 3.31 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DBH (0 risk) | 0.23 | 10.09 | 1.41 | 5.31 | 2.57 | 4.66 | ||
(1 risk) | −9.06** | 8.04 | −7.85** | 4.17 | −5.61 | 3.72 | ||
(2 risk) | 0a | 0a | 0a | 0a | 0a | 0a | ||
DRD4 (0 risk) | 7.66 | 9.55 | 2.06 | 4.96 | 7.04 | 4.44 | ||
(1 risk) | 13.79** | 8.28 | 10.17** | 4.27 | 15.39** | 3.85 | ||
(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 | 6076.64** | 0.17 | 6067.27** | 0.17 | 7047.49** | 0.20 | ||
Number of parameters | 2 | 31 | 23 | 26 | ||||
Schwarz’s Bayesian criterion (BIC) | −6331.46 | −4980.39 | −5146.62 | −4702.19 |