Kell, Leone B.2022-06-172022-06-171928https://hdl.handle.net/2097/42323The spontaneous activity of children, popularly called play, has been discussed since the time of Plato. Some theories of play are well known; the Schiller-Spencer theory that play results from a surplus of energy, the theory of Gross that it is a preparation for life; of Hall that it is a repetition of racial experience; of Patrick that it serves for relaxation; of Lee, who says that play is growth; and of Appleton who believes it exists because of biological necess1 ty. The theories of Spencer and Hall are doubted. 'While the remaining theories are illuminating, no one of them is complete. Since the acceptance of the theory of organic evolution we explain play in terms of structure and function; we say that it is serious and that it is an essential element of growth and development, physical, mental and moral.en-USThe organization that has made the Item available believes that the Item is in the Public Domain under the laws of the United States, but a determination was not made as to its copyright status under the copyright laws of other countries. The Item may not be in the Public Domain under the laws of other countries. Please refer to the organization that has made the Item available for more information.https://rightsstatements.org/vocab/NoC-US/1.0/Thesis