Table 1.

Descriptive statistics for difficulty ratings and post scan responses (n = 18)

	Person—Visual	Person—Category	Object—Visual	Object—Category
Mean difficulty rating	2.08a	2.50b	2.15a	2.28c
Standard deviation	0.48	0.63	0.56	0.65
Average number of correct responses	2.53d	1.58e	3.38f	2.54d
Standard deviation	0.64	0.48	0.61	0.64

Means with a different subscript differed significantly according to the post hoc tests (Bonferroni corrected, P < 0.05).