-9- critical. None of the analysis which follows should be interpreted therefore as a denial of the significance of such factors. Indeed, the paper may help to redress what has been a past imbalance of overemphasis upon non-economic explanations for resistance to change. I. The Responsiveness of Subsistence Farmers The earliest characterizations of subsistence or traditional farmers described them as technologically backward, with deficient entrepreneurial ability, and with limited aspirations. The influence of limited aspirations is best summarized in the colonial stereotype of the "lazy natives" who refuse to work for an income beyond what they require for their subsistence require- ments [Black, 1953, p. 536]. Economists labeled such behaviour as the "back- ward bending supply curve of labor." Although they pointed out the existence of (backward bending labor supply curves in both developed and undeveloped economies, the sophisticated theorizing about leisure income effects and the utility of money was not terribly appealing when applied to primitive and partially monetized societies. Other social scientists who were more culturally sensitive and empathetic viewed any behaviour which superficially appeared to constitute a denial of greater economic gain as merely instances where non- economic variables dominated and swamped economic factors favorable to economic maximization. Interestingly these early views of limited or negative peasant responses to economic opportunity were held by many individuals who were witnesses to or participated in instances of massive "response" by subsistence and peasant farmers to improved economic opportunities, The colonial period in many of today's developing nations offer considerable evidence of economic responsive-