Skinner boxes for psychotics: operant conditioning at Metropolitan State Hospital.

Alexandra (2003) tells the story of Ogden Lindsley’s 1950s lab inside a state hospital.

Lindsley built a human version of a Skinner box. Psychiatric patients could press a lever for small rewards.

The setup let staff watch behavior change in real time. No chains, no drugs—just free-operant data.

The paper argues this project was the seed for all later human operant work.

It showed that mental-health clients could learn when consequences were clear and immediate.

Lindsley coined the term "behavior therapy" and pushed B.F. Skinner’s ideas from animals to people.

Matson et al. (1999) pick up the thread. Their review shows that once clinicians copied Lindsley’s test-then-treat style, they switched from punishment to reinforcement plans for self-injury and aggression.

Szatmari et al. (1994) and Northup et al. (1991) shrink the lab idea into a 90-minute "brief functional analysis" for outpatients. Same logic, faster turnaround.

Craig et al. (2019) give today’s analysts new statistics—randomization tests—so single-case data from any setting can meet modern evidence standards.

You still run brief functional analyses because Lindsley proved the method works with the toughest clients. When you test conditions for 5–10 minutes each, you are using his free-operant rule: let the data talk, then pick the treatment that the data support. Next time you write a plan based on a quick FA, remember it started in a locked ward with a lever and a candy dispenser.