Burt witnesses a mugging on a crowded bus, but does nothing to help the victim. When later asked by the police to explain his inaction, Burt says that he figured someone else would help the victim. Burt has cited which explanation for the bystander effect?
A. arousal-cost-reward
B. diffusion of responsibility
C. group inhibition
D. social contagion
Answer: B
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In Exercise 41, the DS response strength graph following discrimination training showed both positive and negative response strength at all but the extreme values of the nine levels of tone frequency. If the positive and negative strengths for each stimulus were to be summed, what shape would the resulting curve have?
a. A straight line with a slope of zero b. A straight line with a slope of 1.0 c. A U-shaped curve with its minimum at 2.0 kHz d. An inverted U-shaped curve with its maximum at 2.0 kHz
Extremely low levels of dopamine activity are associated with a. muscle rigidity, tremors, and impaired judgment
b. schizophrenia. c. pleasure seeking. d. exploratory behaviors.
_______________ are a set of techniques used to organize, summarize, and interpret data
A) Central tendencies B) Inferential statistics C) Distributions D) Descriptive statistics
A teacher is trying to see whether smiling at her students will increase the number of questions they ask. In the first and third week of the study, the number of questions students ask is recorded
In the second week, the teacher smiles a lot at her students, and the number of questions is also recorded. What type of research design is being used? a. within-subjects b. correlational c. placebo control d. between-subjects