摘要: The biologist sees the development of a child’s observed operational intelligence as due to interaction its genetic endowment and environment—environment being first intra-uterine, later—after birth—including home, neighbourhood, education other social factors. knows that an individual child cannot now, perhaps never will, be precisely measurable independent environment, that, even if it were possible measure for at say age ten, this would probably provide little information about genes controlling intellectual between ages ten twenty years. He is, however, prepared attempt assess in particular group children or young adults, twenty, what proportion total variance scores they make test is additive variance. Mr Huntley will discussing some methods available next paper Symposium.