Why do behavioral geneticists conduct family studies? What are the two common types of family studies and what do they estimate?
What will be an ideal response?
Behavioral geneticists conduct family studies to compare people who live together and share varying degrees of relatedness. Two kinds of family studies are common: twin studies and adoption studies. Twin studies compare identical and fraternal twins to estimate how much of a trait or behavior is attributable to genes. If genes affect the attribute, identical twins should be more similar than fraternal twins because identical twins share 100% of their genes, whereas fraternal twins share about only 50%. Adoption studies, on the other hand, compare the degree of similarity between adopted children and their biological parents whose genes they share (50%) and their adoptive parents with whom they share no genes.
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____________________ includes shared values and norms that are transmitted across generations
Fill in the blank(s) with correct word
If both samples have the same number of scores (n), then the independent-measures t statistic will have df = 2n – 2
Indicate whether the statement is true or false
Elise is responding to a survey asking about her parents' attitudes towards substance use. She says that her parents strongly disapprove of it. Elise is probably
a. not affected by her mothers' attitude, but very affected by her fathers' attitude, toward substance use. b. not affected by her parents' attitudes toward substance use as she makes her own decisions about substance use. c. more likely to use a substance in the coming month because of her parents' disapproval of substance use. d. less likely to use a substance in the coming month because of her parents' disapproval of substance use.
It is important to understand how probability works in statistics because ______.
A. it can tell you the likelihood of winning a lottery B. it is used to test our research hypotheses C. hypotheses are based on probability D. we use probability to prove a scientific theory