Table 1.

Hierarchical regression results.

Problem	Step	Predictors	R2	ΔR2	ΔF, df, p ΔF
Parking	1	Basic cognitive measuresa	0.019	0.019	ΔF = 0.411, df = 6, 128, p = 0.871
	2	Verbal fluency measuresb	0.037	0.018	ΔF = 1.173, df = 2, 126, p = 0.313
	3	Knowledge, experience	0.062	0.025	ΔF = 1.676, df = 2, 124, p = 0.191
	4	Ideation fluencyc	0.255	0.193	ΔF = 31.778, df = 1, 123, p < 0.001
Fund Raising	1	Basic cognitive measuresa	0.025	0.025	ΔF =0.536, df = 6, 128, p = 0.780
	2	Verbal fluency measuresb	0.036	0.011	ΔF = 0.749, df = 2, 126, p = 0.475
	3	Knowledge, experience	0.048	0.012	ΔF = 0.764, df = 2, 124, p = 0.468
	4	Ideation fluencyc	0.189	0.141	ΔF = 21.443, df = 1, 123, p < 0.001
Energy Saving	1	Basic cognitive measuresa	0.052	0.052	ΔF = 1.167, df = 6, 128, p = 0.328
	2	Verbal fluency measuresb	0.094	0.042	ΔF =2.900, df = 2, 126, p = 0.059
	3	Knowledge, experience	0.156	0.062	ΔF = 4.550, df = 2, 124, p = 0.012
	4	Ideation fluencyc	0.323	0.168	ΔF = 30.525, df = 1, 123, p < 0.001

^aBasic cognitive measures: executive functioning tests, cued recall compound variable, Raven's SPM, CRT.

^bVerbal fluency measures: category fluency and letter fluency compound variables.

^cIdeation fluency: ideation fluency compound variable.