Redfield, Linton, & Herskovits, 1936
Acculturation comprehends those phenomena which result when groups of individuals having different cultures come into continuous first-hand contact, with subsequent changes in the original culture patterns of either or both groups.
Redfield, R., Linton, R., & Herskovits, M. 'Memorandum on the study of acculturation'. American Anthropologist, 38, 149–152. 1936:149
Young and McDermott, 1988
[The] power of various experiences and institutions to induce among individuals and groups the acceptance of new values, norms and behavior.
Young, R.A. and Peter McDermott, 'Employment Training Programs and Acculturation of Native Peoples in Canada's North-west Territories'. Arctic 41: 195-202. 1988:195