When they were very young: Almost-threes remember two years ago |
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| Institution: | 1. MRI Group, Singapore Bioimaging Consortium, A*STAR, Singapore;2. Psychology, National Cheng-Kung University, Tainan, Taiwan;3. Psychology, Neurobiology and Physiology, Northwestern University, Evanston, IL, USA;4. Physiology, Feinberg School of Medicine Northwestern University, Chicago, IL, USA;5. Clinical Imaging Research Centre, National University of Singapore, Singapore;6. Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore;1. Public Health & Integrated Toxicology Division, Center for Public Health and Environmental Assessment, United States of America;2. Retired, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC 27711, United States of America |
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| Abstract: | Five children who had participated 15–19 times between 6–40 weeks of age in a study of the perception of auditory space returned to the laboratory two years later. The original experimental sequence, which entailed trials in both light and darkness, was carried out along with several additional memory probes. Five control subjects, age, and sex mates who had not previously participated, also experienced the test procedure. Behavior was videotaped and recorded by two observers, and the control and experimental groups were compared on a series of measures. Several measures provide indications that the 2-year-olds remembered what they did in the laboratory two years before; specifically, they retained memory for early action sequences. The findings are of particular interest because a transition from preverbal to verbal functioning marks this 2-year period of development. |
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