# Visual cliff

> apparatus used to test depth perception in human infants and other animal species

**Wikidata**: [Q505958](https://www.wikidata.org/wiki/Q505958)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Visual_cliff)  
**Source**: https://4ort.xyz/entity/visual-cliff


## References

1. Freebase Data Dumps. 2013