Why would an evolutionary psychologist be concerned with the issue of personality variations in humans and nonhumans?
A. Because the fact that personality is quite consistent and not varying has been used to explain why human beings have been and remain the dominant species on the planet
B. Because such research helps us understand how human beings develop from birth through adulthood
C. Because personality trait research has been seen in every subfield of psychology, and evolutionary psychology has adopted the question as a matter of obligation
D. Because the variations in personality traits may actually be related to the adaptation and survival of certain species
Answer: D
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The __________ involves a set of inheritance rules in which the presence of a single dominant gene causes a trait to be expressed, but two genes must be present for a recessive trait to be expressed
a) dominant-recessive pattern b) multifactorial inheritance c) sex-linked trait d) polygenic inheritance
Anxiety serves as an emotional alarm warning us of threat or danger
Indicate whether the statement is true or false.
Streetwalkers occupy the bottom rung in the hierarchy of prostitutes
Indicate whether the statement is true or false
What correlation coefficient value indicates the "Friend" measure has good discriminant validity?
A researcher was interested in developing a reliable and valid measure of friendliness. That is, she wanted to distinguish between friendly and unfriendly people using her questionnaire. To determine whether she developed a good measure (called "Friend"), she administered her "Friend" questionnaire to a group of 300 people twice (Friend-Time 1 and Friend-Time 2), separated by six months. At the second testing session she also administered a similar questionnaire called "Nice," which previous research has shown to be a valid measure of people's ability to get along with people and to make friends. She also administered a questionnaire designed to measure art ability, which she predicted to be unrelated to friendliness. She observed the following correlations among the measures:
