“…The motivational effects of drugs (Shipman et al, 2006;De Wit, 2009, 2016;Palmisano et al, 2018), food (Astur et al, 2014), money (Astur et al, 2016), music (Molet et al, 2013), and toys (Hiller et al, 2015) have been successfully investigated in humans by using CPP paradigms (review, Linhardt et al, 2022). A recent pioneer study retranslated the SCPP to humans (Baron et al, 2020). Baron and others used a friendly adult person willing to play with a child as an appetitive stimulus and showed successful CPP in two groups of young children, i.e., typically developing children and children with autism spectrum disorder.…”