1. Biological constraints on instrumental and classical conditioning: Retrospect and prospect

   • Michael Domjan
   • Bennett G. Galef

   OriginalPaper Pages: 151 - 161

2. Genotype and environment interactively determine the magnitude, directionality, and abolition of defensive burying in mice

   • John C. Maggio
   • David B. Harder

   OriginalPaper Pages: 162 - 172

3. Play-solicitation behavior in juvenile male and female rats

   • D. H. Thor
   • W. R. Holloway

   OriginalPaper Pages: 173 - 178

4. Cognition in the African Grey parrot: Preliminary evidence for auditory/vocal comprehension of the class concept

   • Irene M. Pepperberg

   OriginalPaper Pages: 179 - 185

5. Formal structure and pattern length in serial pattern learning by rats

   • Stephen B. Fountain
   • Joan C. Evensen
   • Stewart H. Hulse

   OriginalPaper Pages: 186 - 192

6. The nature of anticipation: An inter- and intraevent process

   • E. J. Capaldi
   • Timothy M. Nawrocki
   • Donna R. Verry

   OriginalPaper Pages: 193 - 198

7. Effects of repeated lithium injections on temperature, activity, and flavor conditioning in rats

   • John D. Batson

   OriginalPaper Pages: 199 - 204

8. CS modality, context conditioning, and conditioned freezing

   • Ronald A. Sigmundi
   • Robert C. Bolles

   OriginalPaper Pages: 205 - 212

9. Food as a contextual cue in counterconditioning experiments: Is there a counterconditioning process?

   • Elizabeth D. Capaldi
   • Donna M. Viveiros
   • David H. Campbell

   OriginalPaper Pages: 213 - 222

10. Two-choice, observational learning and reversal in the rat: S-S versus S-R effects

    • M. Ray Denny
    • R. Charles Bell
    • Carla Clos

    OriginalPaper Pages: 223 - 228

11. The order of presentation of conditioned stimuli during extinction

    • Ralph W. Richards
    • David M. Sargent

    OriginalPaper Pages: 229 - 236

12. Integration in response timing: The functional time requirement

    • Michael D. Zeiler

    OriginalPaper Pages: 237 - 246

13. A reevaluation of the CS− hypothesis for schedule-induced polydipsia under intermittent schedules of pellet delivery

    • David Shurtleff
    • Andrew R. Delamater
    • Anthony L. Riley

    OriginalPaper Pages: 247 - 254

14. A time-series analysis of changeover performance on concurrent variable-interval schedules

    • Pamela G. Real

    OriginalPaper Pages: 255 - 265

15. Differential punishment of other behavior: Effects of pause-dependent shock on variable-interval performance

    • O. J. Sizemore
    • F. R. Maxwell

    OriginalPaper Pages: 266 - 274