Bloomsmith, M. A., Brent, L., Schapiro, S. J. 1991. Guidelines for developing and managing an environmental enrichment program for nonhuman primates. Laboratory Animal Science 41, 372-377.
The importance of evaluating any enrichment program cannot be overstated. Quantitatively measuring animals' responses to the enrichment(s) is certainly the best way to evaluate an item or procedure.
Year
1991