To select a random sample, what could a researcher do?
A. take every nth person from a list of everyone in the population
B. use cluster sampling to ensure the sample is representative
C. use a table of random numbers
D. ask respondents who wish to be in the sample to volunteer
Ans: C
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Ivana tells her father that her throat hurts, and asks her father if he will buy her some cough syrup. In reality, though, Ivana's throat doesn't really hurt; she is just pretending that it hurts because she loves how cough syrup tastes. This is an example of self-handicapping
Indicate whether the statement is true or false
Ainsworth's stage theory argues that
a. all children go through three stages of attachment. b. all children suffer an avoidant/resistant stage of attachment. c. day care is bad for children. d. Ugandan infants are different from Western infants.
According to place theory, a. the peak of a wave in the basilar membrane correlates with a sound's frequency
b. patterns of neural firing match the frequency of a sound. c. neurons responding to one frequency are located near neurons responding to similar frequencies. d. sounds with frequencies below 4000 Hz are processed by parts of the basilar membrane different from those that process sounds above 4000 Hz.
The beauty of birthday presents is that you get them once a year. No matter how much you beg, you generally will not get them until the full year has passed. This is an example of a __________ schedule of partial reinforcement
a. fixed interval b. variable interval c. variable ratio d. fixed ratio