Individual differences in skill acquisition and transfer assessed by dual task training performance and brain activity

Brain Informatics

Table 2 Comparison of goodness of fit between models with and without group as fixed factor for mean fNIRS measures from a subset of channels

Dependent variable		Individual differences	Comparison against null model			Comparison between models
Channel	Biomarker	Individual differences	Log likelihood	\({\chi }^{2}\)	p value	\({\chi }^{2}\)	p value
2	HbO	No	− 341.48	25.79	< 0.001	30.21	< 0.001
	HbO	Yes	− 351.28	72.57	< 0.001	30.21	< 0.001
	HbR	No	− 326.38	55.01	< 0.001	7.98	0.157
	HbR	Yes	− 347.29	77.04	< 0.001	7.98	0.157
7	HbO	No	− 380.94	37.02	< 0.001	42.39	< 0.001
	HbO	Yes	− 400.75	14.61	< 0.001	42.39	< 0.001
	HbR	No	− 359.75	79.40	< 0.001	28.93	< 0.001
	HbR	Yes	− 386.29	43.49	< 0.001	28.93	< 0.001
11	HbO	No	− 389.93	16.79	< 0.001	6.53	0.258
	HbO	Yes	− 452.77	39.11	< 0.001	6.53	0.258
	HbR	No	− 386.66	23.31	< 0.001	30.55	< 0.001
	HbR	Yes	− 437.50	69.12	< 0.001	30.55	< 0.001
12	HbO	No	− 406.72	16.39	< 0.001	16.32	0.006
	HbO	Yes	− 392.65	67.45	< 0.001	16.32	0.006
	HbR	No	− 398.56	30.14	< 0.001	42.39	< 0.001
	HbR	Yes	− 371.46	109.79	< 0.001	42.39	< 0.001
14	HbO	No	− 396.43	32.47	< 0.001	6.40	0.269
	HbO	Yes	− 399.21	53.79	< 0.001	6.40	0.269
	HbR	No	− 393.23	38.50	< 0.001	32.32	< 0.001
	HbR	Yes	− 383.04	86.11	< 0.001	32.32	< 0.001

The following models were compared: 1 + (1 | ID) + (0 + Short | ID) vs 1 + Session + (1 | ID) + (0 + Short | ID), 1 + Group + (1 | ID) + (0 + Short | ID) vs 1 + Group + Group: Session + (1 | ID) + (0 + Short | ID), 1 + Session + (1 | ID) + (0 + Short | ID) vs 1 + Group + Group: Session + (1 | ID) + (0 + Short | ID). For models without and with individual differences, the number parameters were 8 and 13, and degrees of freedom were 4 and 8, respectively. Degrees of freedom for comparison between models were 5