A researcher records how well children score on a health test designed to help?

A researcher records how well children score on a health test designed to help?

A researcher records how well children score on a health test designed to help?

Question 1. A research design in which the same participants are observed in each group of a research study is called:

a. within-subjects design.
b. between-subjects design.
c. mixed factorial design.
d. randomized design.

Question 2.Which of the following is an example of a within-subjects design?

a. Participant health scores in a sample are compared to national health averages in the population.
b. A researcher records the time that a sample of children play with each of four different toys.
c. One sample of adults are selected and randomly assigned to one of three feedback conditions.
d. A researcher records the time it takes police officers at two different precincts to respond to a similar emergency call.

Question 3.A type of factor in which the same participants are observed in each group, or at each level of the factor is called:

a. mixed factor.
b. matched samples factor.
c. within-subjects factor.
d. between-subjects factor

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Question 4.The within-subjects design is used when:

a. different participants are observed in two or more groups.
b. the same participants are observed in two or more groups.
c. different participants are randomly assigned to each group.
d. the same participants are observed in one group.

Question 5. Which of the following is a key reason that researchers use a within-subjects design?

a. To ensure that random assignment is used
b. To manage sample size
c. To observe changes in behavior over time
d. To manage sample size and to observe changes in behavior over time.

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