No other study has given conclusive proof that other species cry. Crying is unique only to humans. Perhaps that is the reason for the complexity of this phenomenon. Complex beings bring forth complex issues that may prove impossible to sufficiently understand. Because of its versatility and unbiased relation to age, gender, and culture, crying will continue to puzzle people for years to come.
See also: LANGUAGE DEVELOPMENT; PARENTING
Bibliography
Abell, Ellen. "Infant Crying: I'm Trying to Tell You Something."Available from http://www.humsci.auburn.edu/parent/crying/index.html; INTERNET.
Lester, Barry, and Zachariah Boukydis C. F. Infant Crying: Theoretical and Research Perspectives. New York: Plenum Press, 1985.
Lutz, Tom. Crying. New York: W. W. Norton and Company, 1999.
Murry, Thomas, and Joan Murry. Infant Communication: Cry and Early Speech. Houston, TX: College Hill Press, 1980.
Sammons, W. A. H. The Self-Calmed Baby. Boston: Little Brown, 1989.
Timothy K. Loper
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