Carlson (1985)
Nature 318, 419-425 · 116 subjects
Tested Whether 28 astrologers, nominated by astrological organisations as competent and working from full natal charts, could match subjects to their California Psychological Inventory profiles in a three-way forced choice
Found Performance consistent with chance. Astrologers had agreed the protocol in advance and predicted they would score around fifty per cent.
Since Disputed rather than replicated. Ertel reanalysed the data in 2009 and argued the ranked-choice format showed a marginal effect (p = .054); critics hold that the reanalysis is post hoc. The dispute is unresolved and this book says so.





