1. Objectivity and subjectivity: Pain

   • W. Horsley Gantt

   Editorial Pages: 187 - 192

2. Conditioning of successive adaptive responses to the initial effects of drugs

   • Abraham Wikler

   OriginalPaper Pages: 193 - 210

3. Pavlovian conditioning of drug reactions: Some implications for problems of drug addiction

   • James J. Lynch
   • Allen P. Fertziger
   • W. Horsley Gantt

   OriginalPaper Pages: 211 - 223

4. Classical heart-rate conditioning in the rat: The influence of curare and various setting operations

   • Roger D. Ray
   • Jasper Brener

   OriginalPaper Pages: 224 - 235

5. Pavloviana in the USA: Archives of the history of American psychology, university of Akron

   • Joseph Brozek
   • Marion White McPherson

   OriginalPaper Pages: 236 - 244