PSY 113 Lecture Notes - Lecture 12: Selective Breeding, Twin, Fetal Alcohol Spectrum Disorder
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March 4, 2019 e. g. , b. f. skinner"s learning laboratory. After more generations of breeding, he got two distinct breeds of rats. Maze bright (few mistakes), maze dull (many mistakes) He selectively bred them in a specific type of maze so when placed in a different maze, maze bright wasn"t bright and maze dull weren"t necessarily dull. Monozygotic twins come from a single fertilized egg and are identical . Dizygotic twins come from two fertilized eggs and are fraternal . Twin studies: adoption studies, e. g. monozygotic twins reared in different homes. But, adopted children may not be representative of the larger population : compare concordance rate for co-twins, e. g. if concordance rate of mz twins is higher than dz twins, then there is a strong genetic influence on development. Because of this, other people may treat them more similarly than dz. In general, teasing apart the relative influences of gen & env requires multiple methods!
