Mindy and Mandy are dizygotic twins. Therefore, they
a. came from two separate eggs. c. have no shared genes.
b. have the same genes. d. cannot be used in a twin study.
a
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According to Lewin, an adolescent may be called a "marginal man" because:
A) his or her life space is far too differentiated. B) the child portion of his or her life space overlaps with the adult portion. C) the margins of his or her cognitive structure are too thick. D) the margins of his or her cognitive structure are too thin.
Babies that are 2 months old are placed on the deep side of a visual cliff. What reaction can you assume they will have?
a. They will try to crawl back to the shallow side. b. Their heart rates will decrease because they are interested but not afraid. c. Their heart rates will increase because they are scared. d. They will cry because they are confused.