Capuchin (Sapajus [Cebus] apella) Change Detection

3Citations
Citations of this article
5Readers
Mendeley users who have this article in their library.

Abstract

Change blindness is a phenomenon in which individuals fail to detect seemingly obvious changes in their visual felds. Like humans, several animal species have also been shown to exhibit change blindness; however, no species of New World monkey has been tested to date. Nine capuchins (Sapajus [Cebus] apella) were trained to select whether or not a stimulus changed on a computerized task. In 4 phases of testing, consisting of full image changes, subtle occlusion changes, and 2 levels of feature location changes, the search display and mask durations were systematically varied to determine whether capuchins experienced change blindness and in what contexts. Only the full-image change test yielded signifcant results, with subjects detecting changes most accurately with longer search displays and, perplexingly, least accurately when there was no mask. No interactions between search display and mask durations were found in any test phase, suggesting that the relationship between the 2 parameters may not be important to how capuchins perceive changes. Although it is possible that capuchins do not experience change blindness, we suspect that a mix of experimental design, the difculty of the task, and the inability to verify how closely the subjects attended to each trial contributed to the lack of significant results.

Cite

CITATION STYLE

APA

Leinwand, J. G., & Brosnan, S. F. (2019). Capuchin (Sapajus [Cebus] apella) Change Detection. International Journal of Comparative Psychology, 32, 2–49. https://doi.org/10.46867/ijcp.2019.32.00.07

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free