He has pointed to clear changes that have occurred in his work at the Ventura School for Girls that significantly reduced rhe recidivism rate.
He Has also pointed to the significant changes that Harrington made in the release rates of hospitalized patients at a veterans hospital in Los Angeles.
the case studies edited by his first wife(N. Glasser, 1980,1989) illustrate,for him, the effectiveness of reality therapy with a large variety of psychological problems.