Table 14.

Hierarchical regressions predicting subject's Mathematics grade.

Step	IV	Total R2	R2change	Standardized beta	t
1	Backward digit-span	0.10	0.10	0.033	0.95
	CNT-attention control			0.035	0.84
	CNT-cognitive flexibility			−0.25	−3.08*
	Stroop-interference			0.23	2.80*
	SOC-problem solved in minimum move			−0.05	−1.018
	CGT-delay aversion			0.70	1.87
	CGT-risk adjustment			−0.06	−0.49

CNT, Contingency Naming Test; CGT, Cambridge Gambling Task; SOC, Stockings of Cambridge.

^*p < 0.05.