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. Author manuscript; available in PMC: 2014 Aug 7.
Published in final edited form as: Infant Child Dev. 2010 Apr 28;20(1):47–93. doi: 10.1002/icd.686

Table 4.

Explanations for variation in NBAS item and cluster outcomes

NBAS system Genetic Experience Epigenetic
Human v Chimpanzee? Chimpanzees? Species by Rearing?
ORIENTATION 0 of 8 8 of 8 8 of 8
MOTOR 1 of 6 6 of 6 5 of 6
RANGE OF STATE 0 of 5 4 of 5 5 of 5
STATE REGULATION 0 of 4 4 of 4 4 of 4
Smiles 0 of 1 1 of 1 1 of 1

TOTAL 1 of 24 23 of 24 23 of 24