____________ found data to support the theory that birth order is critical in individual personalities

Whether a fetus will be born with Down syndrome is related to

a. the age of the mother at the time of pregnancy. b. the presence of specific amino acids in the mother's diet. c. overexposure to toxins during pregnancy. d. ingestion of drugs and alcohol by the father prior to conception. e. the uterine environment during pregnancy.

Support for the environmentalist viewpoint of intelligence comes from

a. the finding that the environment accounts for 70 to 80 percent of intelligence. b. studies showing that children reared by the same mother resemble her IQ to the same degree, whether or not they share her genes. c. studies showing that test tube baby twins have IQs more similar to the surrogate mother than to the natural mother. d. studies demonstrating greater similarity between a child's intelligence and their biological, rather than their adoptive, parents.