# Object permanence in the pigeon (Columba livia): Insertion of a delay prior to choice facilitates visible- and invisible-displacement accuracy.

> Research article (Journal of comparative psychology, 2018) · cited 17× · AI/ML

**Wikidata**: [openalex:W2898940462](https://www.wikidata.org/wiki/openalex:W2898940462)  
**Source**: https://4ort.xyz/entity/object-permanence-in-the-pigeon-columba-livia-insertion-of-a-delay-prior-to-choice-facilitates-visible-and-invisible-dis