The LPS Act reached full effect on which date?

• A. July 1, 1972
• B. January 1, 1970
• C. January 1, 1980
• D. December 31, 1972

Answer: (A)

The Lanterman-Petris-Short Act reshaped California’s approach to involuntary commitment by establishing a clear, rights-protective framework for detention and treatment. It was designed to replace older, more arbitrary detention practices with procedures based on specific criteria and due process, while guiding care toward the least restrictive setting.

This framework didn’t snap into place all at once. After its passage in 1967, counties phased in the new procedures, and by July 1, 1972, all provisions were in effect across the state. That date marks when the LPS Act was fully operative, making it the best answer. The other dates do not reflect the official full-effect date of the act; they either precede the rollout or fall outside the period when the complete framework was in force.