Heritability refers to
a. how much of a trait is influenced by genetic factors for a specific individual.
b. the proportion of the differences in a trait among a group of people that is due to genetic differences among these people.
c. the percentage of pairs of people where, if one person in the pair has the trait in question, the other person in the pair also has the trait in question.
d. the degree to which one trait increases with increases in another trait.
b
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Identify the type of observational method used in this study.
Read this description of a study and answer the question that follow. A reporter at a university newspaper sought to gather evidence about the quality of teaching at the university. For one week at the beginning of the semester she attended 5 different, large-lecture classes each day, each with a different instructor. She asked 4 other reporters to do this too (they all attended different classes), and she trained them regarding the ratings they would make. The reporters pretended to be students, but sat in the back of class so the instructor wouldn't notice their observations. Using 10-point rating scales, they rated each instructor on five dimensions: interesting, organized, informative, friendly, and respectful. They summarized their findings and reported that, in general, the quality of teaching at the university is very good.
Recent research indicates that a type of neuron that does not develop normally may cause narcolepsy. What type of neuron is it?
A. hypocretin B. myelinated C. nonmyelinated D. afferent
The characteristic ways in which we think, feel, and behave are referred to as our _____
Fill in the blank(s) with correct word
What does "the family that never was" mean?
a. There was no "golden age" of family life; disintegration of family values is a myth. b. There was no time when families were economically more stable than today; blaming society's problems on economic stability is a myth. c. The number of households with married couples and children under 18 has decreased. d. Regardless of who is in the "family" group, the individuals provide physical, emotional, and mutual aid to members.