The prevalence of PTSD among U.S. soldiers who served in the Vietnam War is about one
in ______.
a. two c. four
b. three d. five
D
Psychology
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What do twin and adoption studies indicate about the role of genes in body weight?
A) Genes account for between 50% and 90% of the variation in body weight. B) Genes account for a moderate 15–20 % of the variation in body weight. C) Genes only account for 5–10 % of the variation in body weight. D) Body weight is not influenced by genes.
Psychology
Some pictures are intentionally designed so that one can see two different images in the same picture. This is called ______
a. the perceptual shift b. figure-ground reversal c. proximodistal perception d. an illusion
Psychology