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A study investigating sleep patterns among babies found that exposure to daytime light helped babies sleep more soundly at night. Because daytime exposure has been found to reduce sleep disturbances for seniors, the researchers decided to test whether light exposure related to sleeping patterns of babies 6 to 12 weeks of age.
For the study, the researchers used light monitors that attached to strollers. The study's results showed that better-sleeping children were exposed to 2 times the intensity of light between noon and 4 PM as the poorer sleepers. The research found no differences in exposure in the morning and evening. (The findings were reported in The Journal of Sleep Research, December 2004.)