58. In single-case research, what is the definition of a phase change? a. The point at which the subject begins to show a response to the treatment b. The point at which the treatment begins to lose...

58.

In single-case research, what is the definition of a phase change?

a. The point at which the subject begins to show a response to the treatment

b. The point at which the treatment begins to lose effectiveness

C. The point at which the treatment is switched from one subject to another

d. A change from baseline to treatment or from treatment to baseline