A Practitioner Tests Whether a New Technique Will Be Effective

Multiple Choice

A practitioner tests whether a new technique will be effective in reducing the number of time-outs required in play therapy sessions for children with conduct disorders.In each of the two sessions before implementing the new technique,five time-outs occurred.In each of the two sessions after implementing the new technique,no time-outs occurred.The practitioner should conclude:

A) The technique clearly was effective.
B) History can be ruled out as an alternative explanation for the improvement.
C) There were a sufficient number of data points in the study.
D) None of these.