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Articles

Published guides, scales, and long-form writing from the Effect Index archive.

Drug guides

Single-substance guides that walk the experience end to end.

Intensity & rating scales

Level-by-level models of experience intensity, in the lineage of the Shulgin Rating Scale.

Dreaming & consciousness

Guides to dream states, lucidity, and the practices used to explore them.

Reference & other writing

Short definitional pages and notes the rest of the archive refers back to.