Table 2.

The distributions of the subjects.

		Photograph Group	Artwork Group
	in 20 s	10	12
age	in 30 s	6	5
	in 40 s or older	4	3
	sum	20	20
	female	9	10
sex	male	11	10
	sum	20	20
	engineering and science	8	6
	social science	7	8
background	art	3	4
	other	2	2
	sum	20	20