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Foster Child
It is another method to analyse the influence of heredity and environment in the development of traits. Its is complementary to twin study on nurture nature aspect Ex:- Chicago school of studies of foster child.

In this method

  1. Various groups of children are selected @ random.
  2. Placed in different homes classified as good, average & poor homes. * since group of children are randomly selected, the genetic factor of trait studied, (say intelligence) is equally distributed in them.
  3. After lapse of time, they are tested on different intelligence scale. 
  •  If intelligence, has environment component children placed in good home should score better than those in average & poor homes.
  • However it suffers from biases- both @ selection & analysis level.

Osborne in 1951 gave following requirement while using this technology
1. Foster child should be placed in the adoptive home sufficiently early to the influence of environment from the earlier home.
2. No selective placement.
3. Sample from-various social levels should be selected.
4. Should not be from one population to eliminate variations due to ethnic or race.

Issues

> Ethical Issues.
> Bias
> Only realizes does not specify the environment factor.
> Complex characters cannot be attributed to any one environment.
> Majority of environment factor still neglected - falsely attributed to genetics

The document Foster Child | Anthropology Optional for UPSC is a part of the UPSC Course Anthropology Optional for UPSC.
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