1. Social isolation at weaning: Some effects on two measures of activity

   • Lesley A. Syme

   OriginalPaper Pages: 161 - 163

2. Maintenance of keypecking in pigeons by a food avoidance but not by a shock avoidance contingency

   • Barry Schwartz

   OriginalPaper Pages: 164 - 166

3. Effects of varied and partial reward on discrete-trial patterning of rats

   • J. M. Bloom
   • Donald T. Williams
   • Leroy P. Metze

   OriginalPaper Pages: 167 - 170

4. Two-way generalization peak shift after two-key training in the pigeon

   • Donald S. Blough

   OriginalPaper Pages: 171 - 174

5. Sequences of reward magnitude and runway performance

   • Edward L. Wike
   • Dennis D. King

   OriginalPaper Pages: 175 - 178

6. Transfer between nonreward and delay of reward following minimal acquisition training

   • Mitri E. Shanab
   • Gerald Cavallaro

   OriginalPaper Pages: 179 - 182

7. Generalization of fixed-interval response patterning in pigeons

   • Thomas D. Nelson
   • G. William Farthing

   OriginalPaper Pages: 183 - 188

8. Reversing the reinforcement contingencies of eating and keypecking behaviors

   • Leonard P. Sawisch
   • M. Ray Denny

   OriginalPaper Pages: 189 - 192

9. Discriminative vs motivational interpretations of avoidance extinction: Extensions to learned helplessness

   • Cynthia Scheuer
   • Cary O. Sutton

   OriginalPaper Pages: 193 - 197

10. The effect of redundant contextual stimuli on autoshaping the pigeon’s keypeck

    • Edward A. Wasserman

    OriginalPaper Pages: 198 - 206

11. Aversive and aggression-promoting properties of urine from dominant and subordinate male mice

    • R. B. Jones
    • N. W. Nowell

    OriginalPaper Pages: 207 - 210

12. Airblast avoidance learning sets in rhesus monkeys

    • Gerald R. Stoffer
    • Robert R. Zimmermann

    OriginalPaper Pages: 211 - 214

13. Lever holding behavior during a leverlift shock escape procedure

    • Hank Davis
    • Paul Hirschorn
    • Harry M. B. Hurwitz

    OriginalPaper Pages: 215 - 218

14. Persistence early and late in extinction as a function of number of continuous reinforcements preceding partial reinforcement training

    • Kenneth L. Traupmann
    • Abram Amsel
    • Paul T. P. Wong

    OriginalPaper Pages: 219 - 222

15. Influences of social isolation during development on sexual behavior of the rat

    • John A. Duffy
    • Shelton E. Hendricks

    OriginalPaper Pages: 223 - 227

16. Tonic immobility in chickens: Is a stimulus that signals shock more aversive than the receipt of shock?

    • Gordon G. Gallup

    OriginalPaper Pages: 228 - 232

17. Prolonged duration of the “novelty effect” following prolonged exposure to a single discriminandum

    • R. E. Franken
    • G. P. Bray

    OriginalPaper Pages: 233 - 236

18. Eliminating behavior with omission and extinction after varying amounts of training

    • Charles N. Uhl

    OriginalPaper Pages: 237 - 240