Harris, M B A comparison of a self-control and a contract procedure for weight control. [electronic resource] - Behaviour research and therapy Nov 1971 - 347-54 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article; Randomized Controlled Trial ISSN: 0005-7967 Standard No.: 10.1016/0005-7967(71)90047-7 doi Subjects--Topical Terms: AdolescentAdultAttentionBehavior TherapyBody WeightEatingFemaleHumansMaleMiddle AgedMotivationNutritional Physiological PhenomenaObesity--therapyPlacebosReinforcement, Psychology