I also would like a good definition of ‘instinct.’ It seems it means different things to different people.
Yes, that is true, and that is one of the reasons, but not the only, that I disagree with some of the things said above by Andrew and Bowzer. Essentially, instinct is an anti-concept, a notion which takes the place of a causal explanation.
The idea of instincts goes back to the Ancient Greeks, lost during the Dark Ages, and re-discovered by Renaissance philosophers. But these were but dabblers in the idea, and it was only in the middle- to late-nineteenth century that the scientific notion began to develop. Herbert Spencer in his 1851 Principles of Psychology defines instinct as an unconscious action, a “compound reflex action.” Less than forty years later William James defined instinct as “the faculty of acting in such a way as to produce certain ends, without foresight of the ends and without previous education in the performance.” But James took this primarily from investigation of animals, and he derived human instincts from that.
Interestingly, psychology around that time taught what was known as the Fallacy of the Faculty. By dividing the human mind into an endless series of faculties, each faculty being what explains some conscious action, it became understood that this procedure was no explanation at all. That we have certain faculties, is just saying that that is how we act, and this is the Fallacy of the Faculty, a pseudo-explanation of conscious action that had no real meaning.
In another 1897 paper on instincts (I do not have the reference handy) the author states “In proposing to write upon the psychology of instinct, I have assumed that it is a conscious process: otherwise it would not come within the province of psychology.” So, there you have it. If instincts are to be the province of psychology, we better make instincts a conscious process else it will not apply to psychology! But, even so, until the early part of the 20th century, these issues in regard to instincts garnered little scientific attention. In a 1921 paper, C.E. Ayres reflects back upon some comments made just at this time, 1897.
“In 1897 Alfred Russell Wallace began a review of Lloyd Morgan’s Habit and Instinct with the following words: ‘There is probably no subject in the whole range of biology the study of which has been so universally neglected as Instinct.’ Those words could not be written now; since then it has rained instinct.”
C.E. Ayres, “Instinct and Capacity – I: The Instinct of Belief-in-Instincts,” The Journal of Philosophy, Vol. 18, No. 21, pp. 561-565, Oct 13, 1921.
So by 1921 it was raining instincts! Everyone and everything began to be explained by instincts. Ten years later the instinct orgy permeated all the popular journals.
“If we are to judge by examples that have appeared in leading publications during the past year, any phenomenon of behavior that tends to exhibit even a minor degree of stability sooner or later will be referred to as ‘instinctive’.”
– Richard Stephen Uhrbrock, “Popular usage of the Terms ‘Instinct’ and ‘Instinctive’,” The Scientific Monthly, Vol. 34, No. 6, pp. 544-546, June 1932.
And, even worse, the same fallacy that was accepted in regard to faculties as a pseudo-explanation in psychology, was now rationalized away when it came to these instincts.
“It will be granted that an instinct is a sort of faculty, but it is suggested that we can employ the concept of an instinct as a sort of faculty without being guilty of the distinctive blunder of the faculty-psychologists.”
– C.A. Mace, “Faculties and Instincts,” Mind, Vol. 40, No. 157, pp. 37-48, January 1931.
With such an irrational foundation as this, the groundwork was set for the nativists who arrived just a few generations later. The likes of Jerry Fodor and Noam Chomsky firmly implanted nativism in psychology, and the neuro sciences that took off shortly thereafter acted as the reductionist mechanism for these premises.
That man is both a physical and mental being cannot be denied, but to explain anything about man’s behavior as an “instinct” is the very same fallacy as the Fallacy of the Faculty. It is a pseudo-explanation, which is worse than no explanation at all. This is true not only on the conceptual level, but on the perceptual level as well. The notion of “instincts” must be banished from the realm of consciousness altogether, whether in man or other animals. It is not a definition of “instinct” which is needed, but its total obliteration.