DUSP8 and Anxiety: It would be interesting to compare results collected in IntelliCages versus Operant conditioning boxes, to learn whether pre‐existing pathologies such as the hypercorticosteronemia, the impaired spatial orientation, or the anxiety (Baumann et al., 2019; Schriever et al., 2020) of Dusp8 KO mice can differentially affect sucrose reward behaviors under single‐housed versus group‐housed conditions.