Its own reward: lessons to be drawn from the reversed-reward contingency paradigm Eran M. Shifferman Review 11 February 2009 Pages: 547 - 558
Bobwhite quail (Colinus virginianus) hatchlings track the direction of human gaze Mark JaimeJuan Pablo LopezRobert Lickliter Original Paper 11 February 2009 Pages: 559 - 565
Great apes’ performance in discriminating weight and achromatic color Cornelia SchraufJosep Call Original Paper Open access 24 February 2009 Pages: 567 - 574
Metamemory in tufted capuchin monkeys (Cebus apella) Kazuo Fujita Original Paper 26 February 2009 Pages: 575 - 585
Chimpanzees (Pan troglodytes) do not develop contingent reciprocity in an experimental task Sarah Frances BrosnanJoan B. SilkSteven J. Schapiro Original Paper Open access 04 March 2009 Pages: 587 - 597
Spatial memory in the grey mouse lemur (Microcebus murinus) Mia-Lana LührsMelanie DammhahnClaudia Fichtel Original Paper Open access 05 March 2009 Pages: 599 - 609
Socially dependent auditory laterality in domestic horses (Equus caballus) Muriel BasileSarah BoivinAlban Lemasson Original Paper 13 March 2009 Pages: 611 - 619
A comparative approach to dogs’ (Canis familiaris) and human infants’ comprehension of various forms of pointing gestures Gabriella LakatosKrisztina SoproniÁdám Miklósi Original Paper 03 April 2009 Pages: 621 - 631
Comparing black-capped (Poecile atricapillus) and mountain chickadees (Poecile gambeli): use of geometric and featural information in a spatial orientation task Emily R. BattyLaurie L. BloomfieldChristopher B. Sturdy Original Paper 19 April 2009 Pages: 633 - 641
How horses (Equus caballus) see the world: humans as significant “objects” Carole FureixPatrick JegoMartine Hausberger Original Paper 21 April 2009 Pages: 643 - 654
