Concord Prison Experiment (historical)

Domain VII · Transpersonal, psychedelic & altered states · Timothy Leary, Ralph Metzner, Gunther Weil · 1961 · Massachusetts Correctional Institution Concord, Massachusetts

What it is

HISTORICAL, NOT FOR USE. This is not a therapy a clinician can or should deliver. It was a research programme, now known mainly as a cautionary case in research ethics and outcome reporting. No doses, administration details or session scripts are given here.

Format

• Selection: volunteers, with prisoners helping decide which other prisoners could join. No random allocation and no concurrent control group; the comparison was the institution's historical base rate (Metzner & Weil 1963).
• Group format: about four prisoners and two team members per group; most groups included one prisoner who had already been through the cycle, as a peer. A group leader usually also took the drug.

Who practises it, and how they are trained or regulated

• Legal status. United States: psilocybin is a Schedule I controlled substance under the federal Controlled Substances Act. That category means high abuse potential, no currently accepted medical use and no accepted safety under medical supervision. Possessing, making or supplying it without federal authorisation is a federal crime, and it cannot be prescribed. Research needs state and institutional approval, a DEA…

Questions to explore with your client

• What drew you to it, and what are you hoping it will change?
• Is there physical contact? Was it explained beforehand, and do you feel free to say no or stop at any point?
• Does it involve any substance, plant preparation, remedy or supplement? Has your doctor or prescriber been told, especially about any medication you take?
• Is it a group, retreat or community? How do they respond if someone wants to leave or raises a concern?
• Does it use a device, heat, cold, water or a physical procedure? Has a medical professional checked that it is safe for you?
• Who runs it, and what training or registration do they hold?
• What actually happens in a session or meeting, and how often?
• What does it cost, and is there pressure to commit to more?
• How do you feel afterwards, in the hours and days that follow?
• Does it fit with, or clash with, the work we do here?

What practitioners of it watch for

• framing co-use as solidarity, equality or "going deeper together".
• recruitment by custody staff, incentives tied to release, no plan after release.
• magical expectations, parole risk, psychosis vulnerability, pressure from a group or facilitator.
• the client keeps appointments after the change point and has at least one support they actually use.
• you can state the comparison, window and definition in one sentence; if you cannot, treat the claim as unverified.

When to involve someone else

• New or worsening physical symptoms, or advice to stop or change prescribed medication: involve the client's doctor or prescriber.
• Signs of coercion, isolation from family and friends, escalating costs or secrecy: discuss openly and consider safeguarding.
• A crisis or thoughts of suicide: follow your crisis protocol. In the US, call or text 988; in the UK and Ireland, Samaritans on 116 123.

Drawn automatically from the guide's own sections. Stay curious: neither endorse nor dismiss what the client values, and check anything that matters against the full guide and its sources. Not medical advice.