| John 
        C. DeFries
 Institute for Behavioral 
        Genetics
 University of Colorado
 447 UCB
 Boulder, CO 80309-0447
 phone: (303) 492-2839
 fax: (303) 492-8063
 email:
 john.defries@colorado.edu
 website:
 https://ibg.colorado.edu/~defries
 Research Interests: Twin and adoption studies of 
        cognitive abilities; genetics of learning disabilities; and use of DNA 
        markers to locate genes that influence behavioral characters. |