The First Wave and Its Rupture

This thread follows psychedelic research as it shifts from psychosis mimicry toward therapy, then fractures under publicity, cultural upheaval, and regulation.

increasingBearing stren­gth in each eventdecreasing

The Psychosis Hypothesis

Naming the Strange Effects A psychiatric model Early clinicians call LSD psychotomimetic because its visible effects resemble symptoms of psychosis. The model promises insight into schizophrenia and an opportunity for doctors to experience a patient’s perspective. Evidence begins to resist Participants also report beauty, insight, and unity. The experiences increasingly exceed the explanatory frame that first made the drug seem useful.

Therapy Turns Inward

The Experience Becomes the Treatment From model illness to possible cure Humphry Osmond and Abram Hoffer test LSD with people treated for alcohol dependence. They initially imagine an induced delirium, yet participants often describe transcendence rather than madness. Context matters The researchers learn that therapist presence and surroundings affect the journey. The importance of what will be called set and setting begins to challenge the idea of a drug acting alone.

The High-Dose Model

A Conversion-Oriented Practice A different therapeutic aim A single high dose, a comfortable room, music, eyeshades, and an attentive guide are used to create conditions for profound psychological change. Al Hubbard helps shape this approach. A challenge to convention The method makes experience, relationship, and spiritual interpretation central. It is difficult to fit into medicine organized around isolated drugs and measurable symptoms.

Leary’s Public Turn

Science and Evangelism Diverge A project gathers momentum Timothy Leary and Richard Alpert begin the Harvard Psilocybin Project, using naturalistic sessions and questionnaires. Their work draws attention to altered consciousness and attracts students. Caution gives way to publicity As Leary’s cultural mission grows, colleagues question the project’s methods and boundaries. What begins as research increasingly sounds like a call for social transformation.

The Closure

The First Wave Ends A political distinction collapses Public controversy and uncontrolled use make responsible clinical work harder to separate from recreational use. Researchers lose access to drugs and institutional support. An unfinished legacy The closure prevents the field from resolving its methodological questions. Yet its clinical ideas and personal networks survive, setting the conditions for later revival.

Around 1950

During the early to mid-1950s

From the mid-1950s

From 1960 to 1962

By the end of 1966