Dr. Mahr is studying the heritability of shyness. Because her research participants are adolescents from different socioeconomic groups across the county, the heritability of self-confidence will appear to be ____
a. low
b. high
c. variable
d. constant
ANSWER:
a
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What conclusion should be reached about the effectiveness of Head Start programs?
A. Head Start programs show few short-term gains for students, with benefits not recognizable until high school B. Despite decades of research, no demonstrable gains have been demonstrated for Head Start programs. C. Across both short- and long-term periods, the evidence of benefits is mixed. D. Head Start programs show clear short-term benefits, and these become stronger through the middle school years.
In the absence of sufficient quantities of 5-alpha-reductase
a. 5-alpha-dihydrotestosterone is not converted into testosterone, and external genitalia are not masculinized in the fetus. b. testosterone is not converted into 5-alpha-dihydrotesterone, and external genitalia are not masculinized in the fetus. c. 5-alpha-dihydrotestosterone is not converted into testosterone, and internal organs are not masculinized in the fetus. d. testosterone is not converted into 5-alpha-dihydrotesterone, and internal organs are not masculinized in the fetus.
What is epigenetics? How are epigenetic changes different than genetic changes?
What will be an ideal response?
The charge that exists across the nerve cell membrane is a result of differing
a. amounts of DNA and RNA. b. types of neurotransmitters on either side of the nerve cell membrane. c. types of neurons inside and outside the nerve cell membrane. d. concentrations of ions on either side of the nerve cell membrane.