VIP and Anxiety: In agreement with previous work (Chao et al., 2010; Ito-Ishida et al., 2015), we found no significant impairments in percentage of time spent in the open arms of the elevated plus maze task, a measure of anxiety (Carobrez and Bertoglio, 2005), for the Dlx5/6, VIP, PV, or SST mutants compared to controls (Figure 3A).