The Expression of the Emotions in Man and Animals allows cultural factors only an auxiliary role in the shaping of expression. This biological emphasis leads to an appreciation of the universal nature of expression, with its implication of a single origin for the entire human species; and Darwin points to the significance of emotional communication with children in their psychological development. Darwin sought out the opinions of some leading British psychiatrists, notably James Crichton-Browne, in the preparation of the book which forms his main contribution to psychology. Amongst the innovations with this book are Darwin's circulation of a questionnaire (probably inspired by his cousin, Francis Galton) in his preparatory
The Man in a Case Man in a case" worked. The exact prototype of Belikov is unknown. Some contemporaries (including V.G. Bogoraz and M.P. Chekhov) considered that the teacher of Ancient Greek language and the inspector of the Taganrog gymnasium A.F. Dyakonov was a prototype of "the person in a case", others described the traits of character of Dyakonov disproving opinion of the first. So, P.P. Filevsky noted Dyakonov's generosity and wrote: "I positively claim that between "The man in a case" and A.F. Dyakonov there is nothing in common and no local color can be found in this work by A.P. Chekhov". The cost