Michael Lambert Et Al

Michael Lambert et al. (2003) found after conducting a meta-analysis of three large-scale studies that treatment monitoring was:

A) effective in reducing client deterioration, but it did not enhance the positive effects of psychotherapy.
B) effective to reduce client deterioration and enhance the positive effects of psychotherapy.
C) ineffective in reducing client deterioration and enhancing the positive effects of psychotherapy.
D) ineffective in reducing client deterioration, but effective in enhancing the positive effects of psychotherapy.