A researcher wants to study race relations in a college population. She knows that it is important for her experiment sample to mirror the demographics of her population of interest, so she ensures that her random sample includes the same demographic breakdown: 70% Caucasian, 15% African American, 15% Latino participants. This is called a _____________ sample.
A. convenience
B. quota
C. simple random
D. stratified random
Ans: D. stratified random
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Earliest use of psilocybe mushrooms was by the:
a. Aztec and Mayan people b. ancient Chinese c. Spaniards d. New Guinea Papuans
When Proposition 30 was passed, what capacity were California prisons operating at?
A. 200-300 percent B. 150-250 percent C. 100-150 percent D. 75-125 percent
According to Lorenz, if newly hatched geese are kept isolated for the first 36 hours after birth, they do not experience _______________, which he suggested as a _______________ for attachment.
a. imprinting; sensitive period b. contact comfort; critical period c. imprinting; critical period d. contact comfort; sensitive period
Haley wants to stop eating so many sweets. What do we know about strengthening one's self-control that can help her accomplish her goal?
a. Self-control is like a muscle that needs to be exercised incrementally over time for the best results, so Haley should consider practicing her self-control in another area first. b. Self-control is an all-or-nothing concept, so Haley should simply stop eating sweets if that's her goal. c. Self-control is an illusion; the only real way for Haley to reach her goal is to completely change her environment to avoid sweets altogether. d. Self-control is fickle. Sometimes people have it and sometimes they don't, so it would be difficult for Haley to figure out a self-control schedule.