In Anderson & Dill's (2000) study on video game aggression, the "noise blasts" that participants administered to opponents in the laboratory were measured. These findings, typical of those found in laboratory experiments, were ¬¬¬_________ but lacked ___________
A) internally valid; construct validity
B) externally valid; precision
C) precise; external validity
D) precise; internal validity
C
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Studies on PKU (phenylketonuria) support which of these generalizations? a. Localized brain damage can impair one behavior with little effect on others. b. A special environment can modify the effect of a gene
c. Certain brain areas can grow new neurons even in adults. d. Physical exercise can improve memory and mood.
Current treatments being investigated for Alzheimer's disease include
a. antioxidants like vitamin E and C. b. injections of Leva-dopa to replace levels of dopamine in the brain. c. use of stimulants like methylphenidate. d. drugs to enhance the production of beta-amyloids.
Explain the concept of gestational age and its relationship to conception
What will be an ideal response?
Facial hair in boys and breast development in girls are both signs of:
a. primary sexual characteristics. b. menarche. c. adolescent growth spurt. d. secondary sexual characteristics associated with puberty.