The nature/nurture controversy and the extent to which an individuals intellectual level is determined

" The dubious history of the heredity environment controversy can be easily traced as far back as the start of the present century with at least some historical evidence placing the roots of this dispute in the time of John Locke. This controversy has continued despite continual reiteration that the critical question is not how much of a trait is due to heredity and how much is due to environment, but rather how environment transact to …

…Encyclopedia of Psychology Volume 2. New York. Freeman, Fin. (1928). Influence of Environment of the Intelligence, School Achievement, and Conduct of Foster Children. New York. Horn, J. (1964). The Texas Adoption Project: Adopted Children and their Intellectual Ressemblance to Biological and Adoptive Parents. University of Texas. Jesen, (1976). The IQ Contraversy. New York. Plomin, Robert, De Fries J.C. (1983) The Colorado Adoption Project. The Univeristy of Colorado. Scarr, Sandra (1983). The Minnesota Adoption Studies; Genetic Differences and Malleability. Yale University.