If it is impossible to conduct a within-subjects design within a certain experiment,what else can the researcher do to detect a real effect?
A)choose a higher alpha level
B)design a new experiment from scratch
C)increase the sample size
D)effect size isn't important,so nothing needs to be done

Question

Quizplus · Accepted Answer

If a within-subjects design is not possible, the researcher can still increase the power of the study by increasing the sample size. This will help to detect any real effects that may exist. Choosing a higher alpha level is not a good choice because this would increase the likelihood of committing a Type I error (false positive). Designing a new experiment from scratch may not be necessary if the existing design can be improved upon. Effect size is important because it indicates the magnitude of the effect, but simply recognizing its importance does not solve the problem of how to detect it without a within-subjects design.

If It Is Impossible to Conduct a Within-Subjects Design Within