Extinction memory in the crab Chasmagnathus: recovery protocols and effects of multi-trial extinction training Yanil HeppLuis María Pérez-CuestaMaría Eugenia Pedreira Original Paper 08 October 2009 Pages: 391 - 403
Spotting animals in natural scenes: efficiency of humans and monkeys at very low contrasts Marc J.-M. MacéArnaud DelormeMichèle Fabre-Thorpe Original Paper 18 November 2009 Pages: 405 - 418
Bonobos, chimpanzees, gorillas, and orang utans use feature and spatial cues in two spatial memory tasks Patricia KanngiesserJosep Call Original Paper Open access 13 November 2009 Pages: 419 - 430
Subjective value of risky foods for individual domestic chicks: a hierarchical Bayesian model Ai KawamoriToshiya Matsushima Original Paper 17 November 2009 Pages: 431 - 441
Learning of magnetic compass directions in pigeons Christiane WilzeckWolfgang WiltschkoHelmut Prior Original Paper 25 November 2009 Pages: 443 - 451
Features enhance the encoding of geometry Debbie M. Kelly Original Paper 09 December 2009 Pages: 453 - 462
Experience and geometry: controlled-rearing studies with chicks Cinzia ChiandettiGiorgio Vallortigara Original Paper 04 December 2009 Pages: 463 - 470
Mother–Calf vocal communication in Atlantic walrus: a first field experimental study Isabelle CharrierThierry AubinNicolas Mathevon Original Paper 04 December 2009 Pages: 471 - 482
The apes’ edge: positional learning in chimpanzees and humans Ansgar D. EndressSarah CardenMarc D. Hauser Original Paper 11 December 2009 Pages: 483 - 495
Domesticated dogs’ (Canis familiaris) use of the solidity principle Shannon M. A. KundeyAndres De Los ReyesRebecca German Original Paper 20 December 2009 Pages: 497 - 505
A new method for studying problem solving and tool use in stingrays (Potamotrygon castexi) Michael J. KubaRuth A. ByrneGordon M. Burghardt Original Paper 18 December 2009 Pages: 507 - 513
Perceptual chunking in the self-produced songs of Bengalese finches (Lonchura striata var. domestica) Rie SugeKazuo Okanoya Original Paper 29 December 2009 Pages: 515 - 523
Discrimination of human and dog faces and inversion responses in domestic dogs (Canis familiaris) Anaïs RaccaEleonora AmadeiDaniel Mills Original Paper 18 December 2009 Pages: 525 - 533
What matters in the associative learning of visual cues in foraging parasitoid wasps: colour or brightness? Emmanuel DesouhantSimon NavelCarlos Bernstein Original Paper 18 December 2009 Pages: 535 - 543
The performance of rooks in a cooperative task depends on their temperament Christelle ScheidRonald Noë Original Paper 18 December 2009 Pages: 545 - 553
Perception of biological motion in common marmosets (Callithrix jacchus): by females only J. BrownG. KaplanG. Vallortigara Original Paper 06 January 2010 Pages: 555 - 564
Egocentric and allocentric search: effects of platform distance and environmental cues Carolina TamaraJoseph LeffelWilliam Timberlake Original Paper 10 January 2010 Pages: 565 - 581
Differential outcomes facilitate same/different concept learning Kelly A. SchmidtkeJeffrey S. KatzAnthony A. Wright Short Communication 24 November 2009 Pages: 583 - 589