Twins Early Development Study

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The Twins Early Development Study (TEDS) is an ongoing longitudinal twin study headed by principal investigator psychologist Robert Plomin and based at King's College London. The main goal of TEDS is to use behavioural genetic methods to find out how nature (genes) and nurture (environments) can explain why people differ with respect to their cognitive abilities, learning abilities and behaviours. The study began in 1994, and it includes participants from over 15,000 families.[1] The original participants were identified from birth records among the set of twins born in the United Kingdom from 1994 to 1996. They were first assessed at the age of two and regularly re-assessed thereafter.[2]


  1. ^ "About TEDS". TEDS. Retrieved 6 March 2019.
  2. ^ Oliver, Bonamy R.; Plomin, Robert (February 2007). "Twins' Early Development Study (TEDS): a multivariate, longitudinal genetic investigation of language, cognition and behavior problems from childhood through adolescence". Twin Research and Human Genetics. 10 (1): 96–105. ISSN 1832-4274. PMID 17539369.

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