“…One approach is simply to give extended extinction training (essentially doubling the number of extinction trials; Baker & Richardson, 2017; Kim, Li, & Richardson, 2011; McCallum et al, 2010). A second approach is to combine extinction training with administration of the partial NMDA receptor agonist D-Cycloserine (DCS; Baker, McNally, & Richardson, 2018; McCallum et al, 2010). The finding that DCS can facilitate extinction retention in adolescents is interesting given that it has been shown to facilitate exposure-therapy in clinically anxious samples (e.g., Guastella et al, 2008; Otto et al, 2010; and Ressler et al, 2004; but see Mataix-Cols et al, 2017).…”