ABSTRACT

IN Section A I have described and discussed some outstanding examples of experimental work in psychical research. In view of the statistical treatment of the findings of these experiments in guessing, such investigations are often described as ‘quantitative’. They would be more accurately described as ‘quotitative’. Quantitative work, in the usual sense of that phrase, is concerned with measurable variables and their correlation with each other. It seeks to discover and formulate laws of co-variation between the determinate values of correlated determinable magnitudes. Psychical research, so far as I am aware, has nowhere reached the level of quantitative experimental work in that sense.