Social interaction between drugged and undrugged rats Sandra E. FileJ. H. Pope OriginalPaper Pages: 161 - 164
Effects of auditory stress on grooming dominance in the rat Irwin M. SpigelTennys McDonald OriginalPaper Pages: 165 - 167
A concurrent assessment of the positive and negative properties of a signaled shock schedule John HarshPietro Badia OriginalPaper Pages: 168 - 172
An incentive effect in thermally motivated behavior T. James MatthewsSeth D. PinskyRichard Strax OriginalPaper Pages: 173 - 176
Functional differences between two shock-induced aggressive behaviors of mice Ross LegrandGregory DahlSusan Meier OriginalPaper Pages: 177 - 180
Learning of the insoluble conditional reaction problem by rhesus monkeys Steven F. Flagg OriginalPaper Pages: 181 - 184
Comparative studies of the preference for free vs response-produced reinforcers Robert W. Powell OriginalPaper Pages: 185 - 188
Two independent effects of variation in intertrial interval upon leverpress avoidance learning by rats R. G. M. Morris OriginalPaper Pages: 189 - 192
Effects of the correlation between a positive and negative US on conditioned suppression in rats M. F. DearingA. DickinsonR. G. M. Morris OriginalPaper Pages: 193 - 195
Facilitation of licking by response-contingent electric shock Karen HartlepGregory Bertsch OriginalPaper Pages: 196 - 198
Magnitude of fear as a function of expected time to all aversive event J. D. LaBarberaRussell M. Church OriginalPaper Pages: 199 - 202
Repeated failures in reducing rat’s spontaneous alternation through the intertrial disruption of spatial orientation Paul M. BronsteinTerry DworkinF. Dmitri Wolkoff OriginalPaper Pages: 207 - 209
Maintenance of observing responses with the less highly valued stimulus in pigeons Stephen B. Kendall OriginalPaper Pages: 210 - 214
Conditional discrimination in the goldfish David C. ZuckermanDonald S. Blough OriginalPaper Pages: 215 - 217
Angle between choice alleys as a critical factor in spontaneous alternation Robert J. DouglasDenis MitchellRobert Del Valle OriginalPaper Pages: 218 - 220
Active- and passive-avoidance learning in inbred mice: Transfer of training effects Richard L. SprottKaren L. Stavnes OriginalPaper Pages: 225 - 228
The “disinhibition” of extinguished operant behavior in pigeons: Trial-tempo shifts and novel stimulus effects Eliot HearstStanley R. FranklinConrad G. Mueller OriginalPaper Pages: 229 - 237
Evidence of color vision in a diurnal prosimian,Lemur catta Ronald F. Mervis OriginalPaper Pages: 238 - 240
