The first author contacted Sergeant MacGregor concerning this matter and received confirmation that the above statement was correct (personal communication, December 19, 1994).
2.
The authors are grateful to Sergeant Fred Feather (Curator of the Essex Police Museum) for providing the objects used in this experiment.
3.
BrinkF. (1960) “Parapsychology and Criminal Investigations”, International Criminal Police Review134, 3–9.
4.
FrazierK. (1981) “CSICOP Cautions Against Use of Police Psychics”, The Skeptical Inquirer5(4), 6–7.
5.
HoebensP.H. (1985) “Reflections on Psychic Sleuths,”TruzziMarcello (ed.) and in KurtzP. (ed.) A Skeptic's Handbook of Parapsychology, Buffalo, NY: Prometheus Books, pp. 631–643.
6.
LyonsA. and TruzziM. (1991) the Blue Sense, New York: Warner Books.
PalmerJ. (1986) “Statistical Methods of ESP Research”, in EdgeH. L.MorrisR. L.PalmerJ. and RushJ. H., Foundations of Parapsychology: Exploring the Boundaries of Human Capability, Boston MA: Routledge & Kegan Paul, pp. 138–160.
9.
Psychic News (November 26, 1994). Herts police admit to using psychic help, 3529, 1.
10.
ReiserM.LudwigL.SaxeS., and WagnerC. (1979) “An Evaluation of the Use of Psychics in the Investigation of Major Crimes”, Journal of Police Science and Administration7(1), 18–25.
11.
ReiserM. and KlyverN. (1982) “A Comparison of Psychics, Detectives and Students in the Investigation of Major Crimes”, in Martin Reiser, Police Psychology: Collected Papers, Los Angeles, CA: Lehi Publishing Co., pp. 260–267.
12.
RoweW.F. (1993) “Psychic Detectives: A Critical Examination”, The Skeptical Inquirer17(2), 159–165.
13.
SweatJ.A., and DurmM.W. (1993) “Psychics: Do Police Departments Really Use Them?The Skeptical Inquirer17(2), 148–158.
14.
WilsonC. (1984) The Psychic Detectives, London: Pan Books.