USE OF LANDMARK CONFIGURATION IN PIGEONS AND HUMANS .2. GENERALITY ACROSS SEARCH TASKS

Pigeons and humans searched for a goal that was hidden in varied locat ions within a search space. The goal location was fixed relative to an array of identical landmarks. Pigeons searched on the laboratory floo r, and humans searched on a table top or an outdoor field. In Experime nt 1, the goal was centered in a square array of 4 landmarks. When the spacing between landmarks was increased, humans searched in the middl e of the expanded array, whereas pigeons searched in locations that pr eserved distance and direction to an individual landmark. In Experimen t 2, the goat was centered between and a perpendicular distance away f rom 2 landmarks aligned in the left-right dimension. When landmark spa cing was increased, humans, but not pigeons, shifted their searching a way from the landmarks along the perpendicular axis. These results par allel those obtained in touch-screen tasks. Thus, pigeons and humans d iffer in how they use landmark configuration.