According to Schein, the "process consulting" model can be described as

The "purchase of expertise" or "selling and telling" model of consulting

Following a diagnostic series of questions $($and perhaps tests of some sort$),$ and subsequent

communication of the diagnostic result and solution

Solving the problem for a client that has little or no interest in the details of the problem, or has little

patience in dealing with the problem

Viewing clients as the experts, with the relationship being one of partnership