Ganzfeld experiment

A telepathy protocol: a "receiver" in mild sensory deprivation (red light, white noise) reports impressions while a "sender" concentrates on a target image; the receiver then picks the target from four candidates. Chance is 25%.

Proponent view

Meta-analyses (Bem & Honorton 1994; Storm et al. 2010) report hit rates around 32%, statistically far from chance across many labs. (Meridian)

Skeptical view

Hyman's critiques: randomisation and sensory leakage flaws in early studies, file-drawer effects, and effect sizes that shrink as controls improve. The autoganzfeld addressed some of this; the debate continues in the literature, not in the tabloids. (Rook)

Points of agreement

This is the one paranormal claim both editors agree deserves continued careful study. Read the actual papers.