As one aspect of a larger problem on the responsiveness of the newborn infant to the external environment, 90 infants, ranging in age from zero to ten days, have been studied under three intensities of light to determine (1) whether there are measurable differences in the amount of activity of the newborn under different light intensities, and (2) what the characteristics and implications of these differences are, provided they exist. The light intensities used may be described as minimal, dim and moderate. The exact strengths at the level of the infants' eyes were determined by means of an illuminometer. Each of the stimuli were presented over a five to six minute period, in contrast to earlier sensory studies on newborns in which the stimuli were of momentary duration. Infants were examined in an experimental cabinet which allowed control of factors other than the one being studied. Activity was measured by means of the stabilimeter-polygraph technique.
Proceedings of the Iowa Academy of Science
©1933 Iowa Academy of Science, Inc.
Weiss, LaBerta A.
"Differential Reactions of Newborn Infants to Different Degrees of Light Intensity,"
Proceedings of the Iowa Academy of Science, 40(1), 198-199.
Available at: https://scholarworks.uni.edu/pias/vol40/iss1/121