. Author manuscript; available in PMC: 2009 Apr 1.

Published in final edited form as: Infant Behav Dev. 2008 Feb 20;31(2):227–238. doi: 10.1016/j.infbeh.2007.10.012

Table 1.

Factor Loadings for the Laboratory Composites: Fear and Positive Affectivity/Smiling and Laughter

Individual Fear Indicators	Factor Loading
Intensity of Bodily Fear (Warm-Up)	.429
Intensity of Facial Fear (Masks)	.873
Intensity of Distress Vocalization (Masks)	.849
Intensity of Escape (Masks)	.635
Intensity of Bodily Fear (Masks)	.817
Individual Smiling and Laughter Indicators	Factor Loading

Presence of Smile (Interaction)	.661
Intensity of Smile (Interaction)	.821
Positive Vocalization (Interaction)	.512
Positive Motor Activity (Interaction)	.372
Presence of Smile (Peek-a-Boo)	.797
Intensity of Smile (Peek-a-Boo)	.805
Laughter (Peek-a-Boo)	.421
Positive Vocalization (Peek-a-Boo)	.658