1. Red is the new orange: Nonlinguistic categorical color perception

   • Olga F. Lazareva

   Outlook 25 January 2019 Pages: 271 - 272

2. The push and pull of dopamine in cue-reward learning

   • Sean B. Ostlund

   Outlook 08 February 2019 Pages: 273 - 274

3. Smarter through group living?

   • Tom V. Smulders

   Outlook Open access 10 July 2018 Pages: 275 - 276

4. Smarter through group living: A response to Smulders

   • Benjamin J. Ashton
   • Amanda R. Ridley
   • Alex Thornton

   OriginalPaper 10 December 2018 Pages: 277 - 279

5. Questioning the developmental effects of group size on cognitive abilities

   • Connor T. Lambert
   • Kendra B. Sewall
   • Lauren M. Guillette

   Commentary 20 November 2019 Pages: 280 - 283

6. Reciprocity: Different behavioural strategies, cognitive mechanisms and psychological processes

   • Manon K. Schweinfurth
   • Josep Call

   ReviewPaper Open access 01 November 2019 Pages: 284 - 301

7. Exposure to maternal odor enhances intake of a taste that mimicks the sensory attributes of ethanol

   • María C. Ifran
   • Andrea B. Suárez
   • Giselle V. Kamenetzky

   OriginalPaper 01 July 2019 Pages: 302 - 309

   

8. Directed forgetting in rats: Evidence for active memory control?

   • Chiaki Tanaka
   • Hayato Yahagi
   • Tohru Taniuchi

   OriginalPaper 09 July 2019 Pages: 310 - 325

   

9. Midsession reversal learning by pigeons: Effect on accuracy of increasing the number of stimuli associated with one of the alternatives

   • Thomas R. Zentall
   • Daniel N. Peng
   • Ryan Yadav

   OriginalPaper 16 August 2019 Pages: 326 - 333

   

10. Human and pigeon suboptimal choice

    • Margaret A. McDevitt
    • James W. Diller
    • Malvina O. Pietrzykowski

    OriginalPaper 19 August 2019 Pages: 334 - 343