The Expression of the Emotions in Man and Animals public by arguing that humans had "animal traits", and instead charmed them by telling stories of "human traits in animals", thus avoiding too much explicit talk of natural selection at work. Darwin preferred to leave the evolutionary implications hanging. Korn points out that the book has never been out of print since 1872, calling into question Ekman's talk of "Darwin's lost masterpiece". The "Editor's notes" at the "Mead Project source page" on the book comment that Darwin concluded work on the book with a sense of relief. The proofs, tackled by his daughter Henrietta ("Ettie") and son Leo, required a
Stare-in-the-crowd effect How to build a baby that can read minds: Cognitive mechanisms in mind reading. Cahiers de Psychology Cognitive/Current Psychology of Cognition, 13, 513–552. Darwin C, (1904) The Expression of Emotions in Man and Animals (London: Murray) (original work published 1872). Ellsworth, P. C., and Carlsmith, J. M. (1973) Eye contact and gaze aversion in aggressive encounter. Journal of Personality and Social Psychology, 33, 117–122. Emery, N. J. (2000) The eyes have it: The neuroethology, function and evolution of social gaze. Neuroscience and Biobehavioral Reviews, 24, 581–604. Gibson, E J. (1969) Principles of Perceptual Learning and Development (New York: Academic Press).