TY - JOUR
AU - MARTIN, N. G.
AB -  11. Genetical analysis of examination results BY N . G. MARTIN Department of Genetics, University of Birmingham, Birmingham There is now strong evidence from many different studies that the greater part of variation in I&,in western white societies a t least, is genetically determined. The evidence for educational achievement is based on fewer studies and is more conflicting. I n this paper we detect and estimate genetic components of performance in the different subjects of a school examination and then seek to discover whether these components are all measures of the same general ability or whether they also include variance due t o independently inherited specific abilities. THE DATA In a previous paper (Martin & Martin, 1975) we described how 149 pairs of twins were ascertained from the records of the Intermediate Examination of the Public Examinations Board of South Australia in 1967 and 1968. No important biases in the ascertainment of the sample or diagnosis of zygosity were found and it was hoped that representative estimates of parameters describing variation in examination performance could be obtained. I n all there were 98 pairs of same-sex and 39 pairs of opposite-sex twins with examination results for analysis. A 
TI - The inheritance of scholastic abilities in a sample of twins: II. Genetical analysis of examination results
JF - Annals of Human Genetics
DO - 10.1111/j.1469-1809.1975.tb00125.x
DA - 1975-10-01
UR - https://www.deepdyve.com/lp/wiley/the-inheritance-of-scholastic-abilities-in-a-sample-of-twins-ii-DP410K0kOA
SP - 219
VL - 39
IS - 2
DP - DeepDyve
ER -