Which factor seems to be strongly involved in the timing of menarche?
A. Parenting skills
B. Nutrition
C. Education
D. Birth order
Answer: B
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Different versions of a gene are called ______.
A. nucleotides B. alleles C. polygenic D. chromosomes
Which one of the following independent variables represents a categorical variable?
a. dosage level of a drug to be administered b. amount of positive or negative reinforcement c. distance from sound source in a test of auditory acuity d. rote versus conceptual method of teaching
The null hypothesis typically ______ the researchers' hypothesis.
A. confirms B. supports C. contradicts D. predicts
It appears that boys engage in more ______ aggression and girls engage in more ______ aggression.
A) ?verbal; physical B) ?physical; relational C) ?physical; antisocial D) ?relational; antisocial