Herrnstein’s equation for the rates of responding during concurrent schedules Frances K. McSweeneyCam L. MelvilleJ. E. Whipple OriginalPaper Pages: 275 - 289
Second-order conditioning using a contextual stimulus as S1 Nancy A. Marlin OriginalPaper Pages: 290 - 294
Are “no-drug” cues discriminated during drug-discrimination training? Donald A. OvertonDennis A. MerkleMark L. Hayes OriginalPaper Pages: 295 - 301
Tests of two explanations of response elimination by noncontingent reinforcement H. M. JenkinsW. A. Lambos OriginalPaper Pages: 302 - 308
Rats’ responses to a moving object related to food or water: A behavior-systems analysis William Timberlake OriginalPaper Pages: 309 - 320
Effects of environmental novelty on filial behavior in imprinted ducklings Leonard A. Eiserer OriginalPaper Pages: 321 - 324
The role of oral and postingestional cues in the conditioning of taste preferences based on differing caloric density and caloric outcome in weanling and mature rats Linda Hayward OriginalPaper Pages: 325 - 331
Conspecific individual recognition between starlings after toxicant-induced sickness J. Russell MasonRussell F. Reidinger OriginalPaper Pages: 332 - 336
The partial-reinforcement extinction effect in 4–5-day-old guinea pigs William A. DaileyMark LindnerAbram Amsel OriginalPaper Pages: 337 - 340
Matching and oddity conditional discrimination in the goldfish as avoidance responses: Evidence for conceptual avoidance learning D. J. ZerbolioJoel L. Royalty OriginalPaper Pages: 341 - 348
“Same/different” symbol use by pigeons Charles A. EdwardsJoyce A. JagieloThomas R. Zentall OriginalPaper Pages: 349 - 355
Effects of proactive interference on rats’ continuous nonmatching-to-sample performance Michael J. Pontecorvo OriginalPaper Pages: 356 - 366
Feature-negative effect in rats’ discrimination learning in the runway Steven J. Haggbloom OriginalPaper Pages: 367 - 372
The influence of cue type and configuration upon radial-maze performance in the rat Philipp J. KraemerMary E. GilbertNancy K. Innis OriginalPaper Pages: 373 - 380