Gilbert (born October 7, 1943 in Bremerton, Washington) is a professor and chair of sociology at Hamilton College in Clinton, New York.
He holds a Doctor of Philosophy degree from Cornell University and has taught at the Universidad Catlica in Lima, Peru, Cornell University, and joined Hamilton college in 1976.
He has published a variety of sociology books, mainly dealing with socio-economic stratification.
He may be best known for his series of books entitled, The American Class Structure.
The class models featured in the series are used by other sociologists such as James Henslin, Brian K.
Williams and Carl M.
Wahlstrom.
His main areas of expertise are Latin America, social stratification, polling, and more specifically the American class structure.