Begum-Diamond, Z., Neuhauser, J. E., Cameron, K. E. 2022. Measuring ramp use in guinea pigs (Cavia porcellus). Journal of the Experimental Analysis of Behavior 118(2), 292-301.
To investigate the utility of ramps as enrichment and as a method for establishing demand for commodities, the latency to climb a ramp of increasing slope to obtain food was measured in four guinea pigs...