WELD 174AB Lecture Notes - Lecture 18: Twin Study, Correlation And Dependence, Twin
22 Aug 2020
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Chapter 7 measuring the mind: galton and individual differences. Phrenology: origin of species (darwin) humans must be evolved as well. Certain characteristics must be inherited (ability for academic success: normal distribution (quetelet) galton: measures of intellectual ability tend to fall into normal distribution. Galton tested this using the first self-questionnaire method; questions about environment and psychological qualities. Most of the scientists had been born with the requisite tastes and aptitudes for their craft. But many scientists cited experiences or influences that strengthened their scientific inclinations. Galton moderated his thesis: hereditary was not the only cause: galton proposed the phrase nature and nurture used often today. Twin studies: fraternal (dizygotic) twins: separate fertilization of two eggs. Improving the human race through selective breeding; should work when human ability is inheritable, which galton believed: intelligence testing: galton had the idea to select intelligent men and women and let them make children.
