1. Weber's Law influences numerical representations in rhesus macaques (Macaca mulatta)

   • Kerry E. Jordan
   • Elizabeth M. Brannon

   Original Article 10 March 2006 Pages: 159 - 172

   

2. Limited spread of innovation in a wild parrot, the kea (Nestor notabilis)

   • Gyula K. Gajdon
   • Natasha Fijn
   • Ludwig Huber

   Original Article 28 March 2006 Pages: 173 - 181

   

3. Sex categorization of conspecific pictures in Japanese monkeys (Macaca fuscata)

   • Reiko Koba
   • Akihiro Izumi

   Original Article 13 April 2006 Pages: 183 - 191

   

4. How great apes perform on a modified trap-tube task

   • Nicholas J. Mulcahy
   • Josep Call

   Original Article 13 April 2006 Pages: 193 - 199

   

5. Spatial relational learning in rufous hummingbirds (Selasphorus rufus)

   • Jonathan Henderson
   • T. Andrew Hurly
   • Susan D. Healy

   Original Article 26 April 2006 Pages: 201 - 205

   

6. Evidence against integration of spatial maps in humans

   • Bradley R. Sturz
   • Kent D. Bodily
   • Jeffrey S. Katz

   Original Article 13 May 2006 Pages: 207 - 217

   

7. Movement characteristics support a role for dead reckoning in organizing exploratory behavior

   • Douglas G. Wallace
   • Derek A. Hamilton
   • Ian Q. Whishaw

   Original Article 24 May 2006 Pages: 219 - 228

   

8. Can wild common marmosets (Callithrix jacchus) solve the parallel strings task?

   • L. G. Halsey
   • B. M. Bezerra
   • A. S. Souto

   Short Communication 16 March 2006 Pages: 229 - 233