Objective-To determine whether, in the treatment of major depression in primary care, a brief psychological treatment (problem solving) Results-At six and 12 weeks the difference in score on the Hamilton rating scale for depression between problem solving and placebo treatments was significant (5.3 (95% confidence interval 1-6 to 9.0) and 4-7 (0.4 to 9.0) respectively), but the difference between problem solving and amitriptyline was not significant (1-8 (-1l8 to 5.5) and 0 9 (-3.3 to 5.2) respectively). At 12 weeks 60%'/. (18/30) of patients given problem solving treatment had recovered on the Hamilton scale compared with 52% (16/31) given amitriptyline and 27% (8/30) given placebo. Patients were satisfied with problem solving treatment; all patients who completed treatment (28/30) rated the treatment as helpful or very helpful. The six sessions of problem solving treatment totalled a mean therapy time of31/, hours.Conclusions-As a treatment for major depression in primary care, problem solving treatment is effective, feasible, and acceptable to patients.