The Willoughby test of clairvoyant perception

Abstract

This paper serves as a critical evaluation of Willoughby's article appearing in this issue of the journal (see X: 2009). It is not necessary to use 200 runs of the Zener card pack; the guessing of an unopened pack of cards is the same as in Rhine's original experiment; there is no necessity for a chance pack since it would be better to compare each series with the "target" series, and the critical or significant ratio method is preferred for the comparison of human subjects rather than the chi-square test. (PsycInfo Database Record (c) 2025 APA, all rights reserved)