Qadri Muhammad A J, Gray Suzanne L
Department of Psychology, College of the Holy Cross, Beaven Hall, Room 410, Box #38A, 1 College Street, Worcester, MA, 01610, USA.
Department of Psychological and Brain Sciences, Villanova University, Villanova, PA, USA.
Learn Behav. 2025 Jan 3. doi: 10.3758/s13420-024-00664-x.
The perception of objects is a challenging task that requires recognizing visual elements and integrating them into a whole. While human vision prioritizes attention to the overall configuration, data from other species suggests this bias towards global form perception is not universal. Studies with pigeons indicate preferential attention to local details when both local and global information may be diagnostic, but studies with other bird species are more limited. To examine whether this local bias is class-wide or potentially species-specific, we studied whether African grey parrots (Psittacus erithacus) have a bias towards local elements or the global configuration when processing Navon-like hierarchical form displays. Two parrots were tested using a computerized touch-screen two-alternative choice task that presented displays that were local-relevant or global-relevant. The results of several successive acquisition phases suggest that these parrots have no local or global bias, indicating differing evolutionary or ecological drives for visual processing among avian species.
物体感知是一项具有挑战性的任务，需要识别视觉元素并将它们整合为一个整体。虽然人类视觉优先关注整体构型，但来自其他物种的数据表明，这种对全局形式感知的偏好并非普遍存在。对鸽子的研究表明，当局部和全局信息都具有诊断价值时，鸽子会优先关注局部细节，但对其他鸟类物种的研究则较为有限。为了检验这种局部偏好是整个鸟类类群共有的，还是可能具有物种特异性，我们研究了非洲灰鹦鹉（Psittacus erithacus）在处理类似纳冯的层次形式显示时，是偏向于局部元素还是全局构型。使用计算机化触摸屏二选一任务对两只鹦鹉进行了测试，该任务呈现的显示与局部相关或与全局相关。几个连续习得阶段的结果表明，这些鹦鹉没有局部或全局偏好，这表明鸟类物种在视觉处理方面存在不同的进化或生态驱动因素。
