They are cohesive, often closely related to kinship groupings and other pre-existing voluntary organization. Individual material incentives are used to encourage participation. At the same time, collective incentives exist and numerous political and ideological meetings reinforce group con- sciousness. Government supervision and training is extensive, but when government controls were too rigid, group cohesion suffered. Finally, coercion is in the background with regard to people who contemplate excessive private economic activities or migration away from the group. The other problem with groups -- for which the above solutions will not be relevant -- is that they will be opposed by some political forces precisely for the reasons groups are advocated. Bureaucrats may not want groups, which can place demands on their activities. The locus of power may be moved away from easily satisfied bureaucratic supervisors to very demanding farmers. The rural elite may not want to see an organization of poor people which might be used to support demands for land reform and/or higher wages. Merchants and moneylenders may fear that groups of farmers may undermine their monopolies in marketing systems. Foreign economic in- terests may be worried. Urban political actors may fear that when farmers are organized, they will develop the political power to redress urban biases in economic plans. Such factors were behind the weakening of animation rurale activities in Senegal after 1963.1 Such problems have also been noted in Niger,2 and indeed may have virtually blocked the participatory aspects of the program Moulton, Animation Rurale, p. 84-86. 2Dominique Gentil, "Les Cooperatives Nigerieness Traditions Vil- lageoises et Modernization Cooperative," 1'Ecole Practique de Hautes Etudes doctoral dissertation, 1971, and "Methodologie de 1'Implantation de Nouveau Systems Cooperatif on Niger," Development et Civilizations 52-53, (April- September 1973), cited in Moulton, p. 140-143.