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Ian John Deary OBE, FBA, FRSE, FMedSci is a Scottish psychiatrist known for work in the fields of intelligence, cognitive ageing, cognitive epidemiology, and personality.
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The National Longitudinal Study of Adolescent to Adult Health, also known as Add Health, is a multiwave longitudinal study of adolescents in the United States. It was begun in 1994 in response to a Congressional mandate to study adolescent health, and was initially called the National Longitudinal Study of Adolescent Health. The first wave of the study, funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development, involved administering a questionnaire to a nationally representative sample of 7th- through 12th-graders during the 1994-95 school year. In the first wave of the study, the questionnaire was administered to about 20,000 adolescents, making it one of the largest longitudinal surveys of adolescents ever conducted. The participants were then re-interviewed in 1996, 2001–02, and 2008, with a fifth wave of data collection underway since 2016. The first three waves included, among other information, detailed and sensitive interviews, and the 11,500 participants in wave III also provided urine and saliva samples.
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The effects of early-life exposures to anesthesia on the brain in humans are controversial. Evidence from nonhuman primate research suggests significant developmental neurotoxicity and long-term social impairment, with a dose–response relationship where repeated exposures cause a more severe impact than single ones. Research in humans has not found conclusive clinical evidence of cognitive impairment; however, systematic reviews imply the possibility of greater behavioural impairments in children exposed to anesthesia before the age of three than control subjects.
References
- ↑ Seven, Richard (24 November 2008). "Study on aging still going strong some 50 years later". The Seattle Times.
- ↑ Schaie, K. Warner; Willis, Sherry L.; Caskie, Grace I.L. (June 2004). "The Seattle Longitudinal Study: Relationship Between Personality and Cognition". Aging, Neuropsychology, and Cognition. 11 (2–3): 304–324. doi:10.1080/13825580490511134. PMC 1474018 . PMID 16755303.
