Sampling error can be eliminated by using true random sampling
Indicate whether the statement is true or false
F
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A boy runs on an icy sidewalk, slips, and falls. In the future, he no longer runs on icy sidewalks. His getting hurt is an example of
a. positive reinforcement. b. negative reinforcement. c. positive punishment. d. negative punishment.
Which of the following most likely contributes to the high level of accidents in the preschool age group?
a) Parental neglect, parents working full time, lack of supervision b) Preschooler's high level of physical activity, curiosity, lack of judgment c) Dangerous furniture, unsafe living conditions, poor lighting d) Lack of quality day care, lack of supervision, poorly trained day care workers
Which of the following is true about dreaming and sleep?
A. Dreams only occur during REM sleep. B. Dreams that occur during REM are more vivid than dreams that occur during non-REM sleep. C. Dreams occur more often during non-REM sleep than during REM sleep. D. Hallucinatory dreams are more likely to happen during slow-wave sleep than REM sleep.
In an observational study of patients in a psychiatric ward, you alternate 5-minute periods of observation with 5-minute periods of recording behavior. This is an example of ________ sampling.
A. individual B. time C. alternating interval D. event