Table 2.

Summary of initial multiple regression analysis for all primary predictors of GPA (N = 181)

Category	Predictor	B (95% C.I.)	S.E.	β	t	p	sr 2
Lifetime experience	LEQ young adulthood specific	−0.001 (−0.020, 0.018)	0.010	−0.007	−0.090	0.928	0.000
	LEQ young adulthood non-specific	0.024 (−0.007, 0.054)	0.015	0.131	1.533	0.127	0.011
	LEQ midlife specific	0.026 (−0.005, 0.056)	0.016	0.122	1.651	0.101	0.012
	LEQ midlife non-specific	0.042 (0.013, 0.070)	0.015	0.235	2.857	0.005	0.036
Cognitive function	WAIS full-scale IQ	0.001 (−0.013, 0.014)	0.007	0.007	0.080	0.936	0.000
	Episodic memory	0.197 (0.036, 0.358)	0.081	0.194	2.423	0.017	0.026
	Working memory	0.184 (0.020, 0.349)	0.083	0.192	2.217	0.028	0.022
	Executive function	0.083 (−0.091, 0.257)	0.088	0.090	0.943	0.347	0.004
	Language processing	0.210 (0.038, 0.382)	0.087	0.203	2.407	0.017	0.026
Psychosocial function	LSNS family	−0.004 (−0.031, 0.023)	0.014	−0.023	−0.285	0.776	0.000
	LSNS neighbours	0.001 (−0.027, 0.028)	0.014	0.003	0.041	0.967	0.000
	LSNS friends	−0.014 (−0.045, 0.017)	0.016	−0.071	−0.905	0.367	0.004
	HADS anxiety	−0.017 (−0.070, 0.036)	0.027	−0.050	−0.64	0.523	0.002
	HADS depression	0.012 (−0.061, 0.086)	0.037	0.026	0.334	0.739	0.000
Genetic	APOE	0.127 (−0.153, 0.406)	0.142	0.063	0.893	0.373	0.004
	BDNF Val66Met	−0.019 (−0.301, 0.264)	0.143	−0.009	−0.131	0.896	0.000
	KIBRA	0.123 (−0.149, 0.395)	0.138	0.064	0.894	0.373	0.004
	COMT Val158Met	0.046 (−0.248, 0.340)	0.149	0.022	0.308	0.759	0.000
	SERT 5-HTTLPR	0.206 (−0.081, 0.494)	0.146	0.099	1.416	0.159	0.009

C.I. confidence interval, sr ² semi-partial correlation squared, LEQ Lifetime of Experiences Questionnaire, WAIS Wechsler Adult Intelligence Scale, LSNS Lubben Social Network Scale, HADS Hospital Anxiety and Depression Scale, APOE apolipoprotein E, BDNF brain-derived neurotrophic factor, KIBRA kidney and brain expressed protein, COMT catechol-O-methyl transferase, SERT serotonin transporter