Twins: And What They Tell Us About Who We Are (80 page)

Authors: Lawrence Wright

Tags: #Family & Relationships, #Siblings, #Science, #Life Sciences, #Genetics & Genomics, #test

BOOK: Twins: And What They Tell Us About Who We Are

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Selfhood, and identical twins, 157-160

Sex.
See
Homosexuality; Love life of twins

Shafran, Robert, 36-37, 38-39

Shared
vs
. non-shared environment, 62, 140-142, 147-148

Shields, James, 67

Siamese twins, 90, 118-119

Sigmundson, H. Keith, 116

Skinner, B.F., 23-24, 30

Social attitudes, heritability of, 123, 147

Social programs, views of need, 9-10, 148

Southern California Twin Project, 128

Soviet Union, and twin studies, 15-16

Spencer, Herbert, 14

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