Table 4. Parameters of the simple and mediated multilevel models for α with condition as predictor (exogenous variable) and centered velocity as mediator.

Effect	αIN				αOUT
	Non-mediated		Mediated		Non-mediated		Mediated
	Estimate	SE	Estimate	SE	Estimate	SE	Estimate	SE
Fixed effects
γα	0.848	0.054	0.826	0.052	0.858	0.049	0.835	0.047
c	−0.131	0.030			−0.165	0.031
γV			−0.005	0.019			−0.019	0.021
a			−0.090	0.014			−0.090	0.016
b			−1.104	.456			−1.272	0.520
c′ (direct effect)			−0.232	0.052			−0.281	0.060
ab (indirect effect)			0.099				0.114
Model fit statistics
AIC	−29.307		−128.900		−34.486		−113.900
BIC	−18.881		−75.400		−24.060		−60.400
Log-likelihood	20.653		86.500		23.243		79.000
Deviance	−41.307		−172.900		−46.486		−157.900
Groups (PP)	7.000		7.000		7.000		7.000

Bold for significant fixed effect coefficients.