Research in this lab is devoted to understanding the nature of cognition, especially the nature of concepts and reasoning. Some of the topics we investigate include:

Please visit the Project pages for more specific information about on-going research. Recent articles also appear under Publications.

If you'd like to earn money for participating in this research, please click here.


To get in contact with us send email to:

ripslab (at)

or write to:

314 Swift Hall, Psychology Department
2029 Sheridan Road
Northwestern University
Evanston, IL 60208