Interaction between testing and intervention. The effects of the early testing—for example, the baseline observations—could sensitize the client to the intervention so that generalization could be...

Interaction between testing and intervention. The effects of the early testing—for example, the baseline observations—could sensitize the client to the intervention so that generalization could be expected to occur only when subsequent clients are given the same tests prior to intervention. Example: All members of an assertion training group met for 3 weeks and role-played several situations in which they were not being assertive. The formal intervention of assertion training started the fourth week, but by then all group members were highly sensitized to what to expect.