Students conducted a naturalistic observation to study whether people arriving at the library alone would be more likely to hold the door open for a person coming in immediately after them than would people who arrived in pairs. The students made their observations looking through the window of a classroom building across from the library. They chose this position for observation to avoid the potential problem of
A. demand characteristics.
B. observer bias.
C. nonrepresentative sampling.
D. reactivity.
D. reactivity.
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Which brain area is most important for choosing between a pleasure now and a greater one later?
a. Corpus callosum b. Prefrontal cortex c. Hypothalamus d. Occipital cortex
People in committed romantic relationships are ____ in the long run
a. more sensitive to relationship problems b. more vulnerable to relationship problems c. more resilient in the face of relationship problems d. more likely have trouble resolving relationship problems
Which statement regarding nuclear fission is true?
a) The cost of building a nuclear power plant is high. b) Core meltdowns generally don't impact the surrounding population. c) Nuclear power plants release as much pollution as coal and oil during normal operation. d) Nuclear plants produce less than one ton of toxic nuclear waste annually, on average.
A recent study reported that Americorps volunteers were higher than a comparison group on the following:
a. understanding community problems. b. engagement in civic activities. c. overall life satisfaction. d. all of these answers are correct.