Question: Please include supporting comments "Weaknesses: Homogeneity: The sample was 91% Caucasian, which may limit the generalizability to more diverse populations. Persistence of Medication: Because all patients were also on medication, it is difficult to isolate the alliance's effect from the interaction between therapy and pharmacotherapy. Subjectivity: The alliance was based only on patient ratings; therapist or observer perspectives might have offered a different dimension of the relationship. Need Assignment Help?