Table 2.

Number of episodes of abnormal behavior observed during each phase; the types of abnormal behavior observed per subject (with number of episodes observed in parentheses)

	Any abnormal behavior
Subject	A1	B	A2	Total	Types of abnormal behavior observed
1 (adult)	23	18	20	61	Self-directed (clapping/clasping, 48)
					Feces-smearing (1)
					Stereotypic locomotion (2)
					Self-biting (10)
2 (adult)	0	0	4	4	Feces-smearing (4)
3 (adult)	0	0	1	1	Feces-smearing (1)
4 (juvenile)	79	27	66	172	Self-directed (digit-sucking, 162)
					Self-directed locomotor (1)
					Self-biting (9)