Barnes-Holmes, Y., Barnes-Holmes, D., Smeets, P. M., & Luciano, C. (2004). The derived transfer of mood functions through equivalence relations. The Psychological Record, 54, 95-114.
The authors, researchers at the National University of Ireland and Leiden University, investigated the transfer of induced happy and sad mood functions through equivalence relations. Participants were exposed to a transfer of mood functions test to determine whether the appropriate happy and sad mood functions had transferred via equivalence from the B stimuli to the C stimuli. The mood measures showed that the specific mood functions established in the presence of the B stimuli successfully transferred to the C stimuli for the majority of subjects.