| Cowles {car} | R Documentation | 
The Cowles data frame has 1421 rows and 4 columns.
These data come from a study of the personality determinants
of volunteering for psychological research.
Cowles
This data frame contains the following columns:
female; maleno; yesCowles, M. and C. Davis (1987) The subject matter of psychology: Volunteers. British Journal of Social Psychology 26, 97–102.