Table 2.

Percentage of Children Exhibiting Behaviors Measured by the PDDST-II Items

Item	Behavior present
	N=554	%
Birth to 6 Months
1.   Hard to get baby to “talk” back (cooing, etc)	173	31
6 to 12 Months
2.   Avoided looking at you during feeding	51	9
12 to 18 Months
3.   Not show what he/she wanted	91	16
4.   Seemed bored or uninterested in conversation	126	23
5.   Interested in feeling different textures	123	22
6.   Stare at his/her fingers	130	23
7.   Didn’t want to do something until he/she could do it just right	106	19
18 to 24 Months
8.   Enjoys tickling and chasing but not pat-a-cake or peek-a-boo	47	8
9.   Doesn’t care if you are there or not	41	7
10. Cries when you leave but doesn’t notice when you return	35	6
11. Hard time getting used to new toys	38	7
12. Walks on his/her toes	164	30
13. Became less interested in toys	53	10
14. Stopped using gestures he/she had mastered	25	5