Mental Radio

Record summary

Upton Sinclair’s Mental Radio describes informal drawing-transmission experiments conducted with his wife, Mary Craig Sinclair, and presents them as suggestive of telepathy. The book became influential among popular readers and was discussed by psychical researchers, including Walter Franklin Prince. It matters as a bridge between domestic experimentation, literary culture, and the emerging effort to quantify psi. The procedures were not blinded or standardized by modern standards, and selection, memory, cueing, and publication effects remain central alternative explanations. Its status is testimonial rather than laboratory proof.