Jolliffe, Christopher D Verbally reinforcing pain reports: an experimental test of the operant model of chronic pain. [electronic resource] - Pain Jan 2004 - 167-75 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0304-3959 Standard No.: 10.1016/j.pain.2003.10.015 doi Subjects--Topical Terms: AdultBehavior TherapyBlood Pressure--physiologyChronic DiseaseConditioning, Operant--physiologyFemaleHumansMalePain--physiopathologyPain ManagementPain Measurement--methodsPain ThresholdPhysical StimulationReinforcement, VerbalSurveys and Questionnaires