Cevap :

1- A limitation of the interrupted time-series design is that changes in the dependent variable may be due not to the intervention, but to:

a. confounding external event.
b. both 'a' and 'b'
c. "seasonal" changes in the dependent variable.
d. lack of a randomly assigned control group.

Desc: A limitation of the interrupted time-series design is that changes in the dependent variable may be due not to the intervention, but to confounding external events or seasonal changes in the dependent variable. Therefore, the correct answer is option B, "both 'a' and 'b'".

2- Repeated, standardized measurement of several settings over time, when an intervention is implemented at different times in different settings during the measurement, is:

a. a focus group design.
b. a multiple baseline design.
c. an interrupted time-series design.
d. both 'a' and 'b'

Desc: Repeated, standardized measurement of several settings over time, when an intervention is implemented at different times in different settings during the measurement, is a multiple baseline design. Therefore, the correct answer is option B, "a multiple baseline design".

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Diğer Cevaplara Gözat

Cevap :

1- b. both 'a' and 'c'. Changes in the dependent variable in an interrupted time-series design may be due to external events that affect the dependent variable, as well as to seasonal changes that occur naturally over time.

2- b. a multiple baseline design. In this design, multiple settings or subjects are measured repeatedly over time, and the intervention is introduced at different times for each setting or subject. This allows for a comparison of the dependent variable before and after the intervention in each setting, as well as a comparison between settings.