Table 4.

Subtests results by academic qualifications.

	Level of academic qualification, mean ranks
	Basic studies (9thgrade)	Incomplete high school	High school	University attendance	University degree	Graduate studies	χ2a
Memory game execution time	67.23	75.33	67.09	59.04	57.65	44.00	4.774
Memory game errorsb	42.36	64.97	60.54	50.39	51.41	42.17	7.694
Supermarket execution time	76.54	55.82	57.88	55.09	76.90	50.33	9.731
Supermarket errors	76.48	56.94	59.97	57.61	64.62	69.58	5.130
Supermarket money spentc	77.71	67.44	59.97	55.13	65.29	41.25	8.269
Gallery execution time	67.32	68.33	59.21	60.95	58.06	69.83	1.761
Gallery errors	84.00	73.88	46.35	54.00	54.53	52.00	22.024d

^aChi-square of the Kruskal-Wallis test.

^bNumber of incorrect hits.

^cMoney spent in Euros used to purchase the pre-defined list of products.

^d P<.01.