As this test was performed by the same cohort of rats that were tested in the BRLT tasks and as no genotype‐specific deficit was reported in the Dlg2+/− rat model in open field and elevated plus maze,37 it can be interpreted that the impaired performance seen in the Dlg2+/− rats in the substrate deterministic BRLT is due to a cognitive impairment in reversal learning as opposed to a differential stress response. The gene discussed is DLG2; the disease is Cognitive impairment.