THE INTERACTION OF HEREDITARY AND ENVIRONMENTAL INFLUENCES 1
Raymond B. Cattell · British Journal of Statistical Psychology · 1963
This paper is concerned with improvements in the multiple abstract variance analysis method (MAVA). The assumptions of the latter are more clearly developed and implications for genetic, psychological, and sociological research issues are discussed. The main conclusion is that although it offers solutions to questions not answerable by twin study methods, or by current experimental designs related to learning theory, to personality theory and to important sociological issues, MAVA demands much larger and more carefully planned and highly organized research programmes than have hitherto been contemplated in psychology.