Journal
BRAIN AND COGNITION
Volume 46, Issue 1-2, Pages 159-165Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0278-2626(01)80056-7
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When asked to hold a young infant in their arms, most adults field on the left side (Harris, 1997). In a prior study, we found the same bias when we ashed adults merely to imagine holding an infant in their arms (Harris, Almerigi, & Kirsch, 1999). It has been hypothesized that the left-side bias is the product of right-hemisphere arousal accompanying certain aspects of the act, causing attention to be driven to the contralateral, or left, side of personal space. Left-side holding, whether actual or imagined, thus would be consistent with the direction to which the holder's attention has been endogenously directed. We tested this hypothesis by giving 250 college students the imagine-holding task and then, as an independent measure of lateralized hemispheric arousal, a 34-item Chimeric Faces Test (CFT). On the imagine lest, a significant majority reported a left-side hold, and, on the CFT, left-side holders had a significantly stronger left-hemispace bias than right-side holders, although both left- and right- side holders had left-hemispace CFT biases. The results thus support the attentional-arousal hypothesis but indicate that other factors are contributing as well. (C) 2001 Academic Press.
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