© 2008 The Royal College of Psychiatrists
Correspondence |
150 years of evolutionary theory
Clare Mental Health Services, Stella Maris Day Hospital, Lisdoonvarna, Co. Clare, Ireland. Email: hpoconnell{at}yahoo.ie
Edited by Kiriakos Xenitidis and Colin Campbell
‘In the distant future I see open fields for more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation.’1
Charles Darwin first recorded his ideas on ‘transmutation’, a word used to signify the changeable nature of species, in 1844. However, he did not publish his ideas then but instead embarked on painstaking studies of molluscs and other subjects for many years in his home-based laboratory, publishing widely and making some novel discoveries in the area of mollusc biology. We will never know whether he would have got around to publishing his theory of evolution if it had not been for the work of a young naturalist called Alfred Russel Wallace, who forwarded his own (remarkably similar) ideas on the subject to Darwin in 1858. As a result, the two men had their findings jointly presented to the Linnaean Society one and a half centuries ago this year, on July 1st 1858,2 an event that initially passed by relatively quietly, but that was soon to rock the scientific establishment and society as a whole. Darwin’s notebooks prove that he had been developing his theories on ‘transmutation’ for the previous 20 years, based on his observations on the HMS Beagle and his own ‘home-work’ on molluscs and numerous other subjects. Potential reasons as to Darwin’s delay in publishing his findings include his wish to produce as much supportive scientific evidence as possible, ambivalence about publishing a Godless theory in a religious society and, at a personal level, a reluctance to offend his devoted wife Emma, who was a devout Christian.3
Charles Darwin contributed directly to modern psychology and psychiatry in the form of his book The Expression of the Emotions in Man and Animals, which was effectively the first textbook on human evolutionary psychology and psychiatry.4 His indirect contribution is far more significant, and involves the application by many others of evolutionary principles to psychology and psychiatry.5–7 However, despite the universal acceptance of evolutionary theory in all branches of the biological sciences, evolution is effectively ignored in mainstream medicine and in psychiatry and psychology, partly because of difficulties with providing empirical evidence or ‘proof’, and partly because of the corruption and perversion of such ideas in the abuses of Social Darwinism and eugenics. Perhaps most importantly, there is only an emerging evidence base on the clinical applications of evolutionary theory to psychology and psychiatry, and this area remains a challenge to researchers and clinicians with an interest in the subject.
Despite these problems and shortcomings, an undeniable fact remains that evolution is one of the central platforms of biology and, if psychology and psychiatry are to be considered as belonging to the biological (as opposed to the social) sciences, then evolutionary theory must have relevance to the study of the human mind.8
In a time when ‘biological psychiatry’ has taken on hopelessly reductionistic connotations, for example relating the complexity of human emotions and psychopathology to often questionable and over-simplistic neurotransmitter theories, psychiatry and psychology were never more in need of the fresh perspectives that evolutionary theory would bring to the study of the human mind. A 21st-century presentation to the Linnaean Society is needed, this time on evolutionary psychology and psychiatry.
REFERENCES
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1
- Darwin C. On the Origin of Species: by Means of Natural Selection, or The Preservation of Favoured Races in the Struggle for Life. John Murray, 1859. 2
- Darwin C, Wallace AR. On the tendency of species to form varieties; and on the perpetuation of varieties and species by means of natural selection. Journal of the Proceedings of the Linnean Society of London: Zoology 1858; 3: 46 –50. 3
- Quammen D. The Reluctant Mr. Darwin. An Intimate Portrait of Charles Darwin and the Making of His Theory of Evolution. Atlas Books, 2006. 4
- Darwin C. The Expression of the Emotions in Man and Animals. John Murray, 1872. 5
- Nesse RM. Is depression an adaptation? Arch Gen
Psychiatry 2000; 57: 14
–20.
[Abstract/Free Full Text] 6 - Stevens A, Price J. Evolutionary Psychiatry. A New Beginning (2nd edn). Routledge, 2000. 7
- Buss DM. Evolutionary Psychology. The New Science of the Mind (2nd edn). Allyn & Bacon, 2004. 8
- Abed RT. Psychiatry and Darwinism. Time to reconsider?
Br J Psychiatry 2000;
177: 1
–3.
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