Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

It's official: apes outsmart monkeys

Primate IQ test hails orang-utans as our smartest relatives.

This is a preview of subscription content, access via your institution

Access options

Rent or buy this article

Prices vary by article type



Prices may be subject to local taxes which are calculated during checkout


  1. DeanerR. O., van SchaikC. P.& JohnsonV.Evol. Psychol., 4. 149 - 1496 (2006).

    Google Scholar 

Download references


Additional information

Grand Valley State University, Michigan

Related links

Related links

Related links in Nature Research

Chimp genome special

Brain and behaviour news

Ecology and evolution news

Related external links

Evolutionary Psychology

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Hopkin, M. It's official: apes outsmart monkeys. Nature (2006).

Download citation

  • Published:

  • DOI:


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing