Differences in performance on a reversal learning test and division of labor in honey bee colonies Y. Ben-ShaharC. K. ThompsonG. E. Robinson Original article Pages: 119 - 125
Erroneous choice and foregone gains in hoarding gray jays (Perisoreus canadensis) T. A. WaiteK. L. Field Original article Pages: 127 - 134
Learning and foraging efficiency in German cockroaches, Blattella germanica (L.) (Insecta: Dictyoptera) V. DurierC. Rivault Original article Pages: 139 - 145
Seeing how it’s done: matching conditions for observer rats (Rattus norvegicus) in the bidirectional control E. D. RayM. R. GardnerC. M. Heyes Original article Pages: 147 - 157
Intentional behaviour in dog-human communication: an experimental analysis of “showing” behaviour in the dog A’. MiklósiR. PolgárdiV. Csányi Original article Pages: 159 - 166