21. An ideal baseline in a single-case study has which of the following characteristics:
b. Absence of a trend
c. Little variability
d. All of the above
22. In order to draw a causal conclusion from a multiple-baseline design, what must occur?
a. The treatment needs to change the behavior when it is implemented for the different people, behaviors, or settings.
b. The treatment effect has to reverse upon return to baseline.
c. The behaviors, settings, or people must be highly related or interdependent.
d. Multiple groups need to participate in the study.
23. When the baseline trend is opposite of the trend during treatment?
a. The effect is powerfully demonstrated.
b. The trend obscures causal conclusions.
c. Maturation effects threaten internal validity.
d. It is impossible to find a treatment effect.
24. If there is a great deal of variability in the data in a single case study, it is prudent for the researcher to:
a. Increase the length of the study
b. Use only visual inspection to interpret the data
c. Do a statistical analysis of the data
d. Decrease the length of the study
25. In comparing single case to group studies, which of the following is true?
a. Single-case designs are always preferable.
b. Group designs are always preferable to single-case designs.
c. Single-case designs are preferable only after group designs are done.
d. Single-case designs complement group designs. Each can be valuable at different stages of the investigation of an effect.
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