Minimization of modal contours: an essential cross-species strategy in disambiguating relative depth Björn ForkmanGiorgio Vallortigara Original article Pages: 181 - 185
Functional lateralization, interhemispheric transfer and position bias in serial reversal learning in pigeons (Columba livia) B. DiekampH. PriorO. Güntürkün Original article Pages: 187 - 196
Interactive learning in the paradise fish (Macropodus opercularis): an ethological interpretation of the second-order conditioning paradigm József TopálVilmos Csányi Original article Pages: 197 - 206
Do chimpanzees tailor their gestural signals to fit the attentional states of others? Laura A. TheallDaniel J. Povinelli Original article Pages: 207 - 214
Sun compass orientation in seed-caching corvids: its role in spatial memory Wolfgang WiltschkoRussell P. BaldaRoswitha Wiltschko Original article Pages: 215 - 221
How western scrub-jays (Aphelocoma californica) select a nut: effects of the number of options, variation in nut size, and social competition among foragers Tom A. Langen Original article Pages: 223 - 233
Training requirements and retention characteristics of serial list organization by macaque monkeys F. Robert TreichlerDebra Van Tilburg Original article Pages: 235 - 244
