“…First, the trial markers (TM) borders were made unique across conditions (see Figure S1). We did this to avoid a potential TM-contextual carryover effect that might have enhanced similarlity between conditions, given that trial context can be a crucial factor for judgments and behaviour in humans (e.g., Msetfi, Wade, & Murphy, 2013;Soares, Polack, & Miller, 2016), as well as for expressing learning by nonhumans (Jozefowiez, Witnauer, & Miller, 2012;Murphy, Baker, & Fouquet, 2001;Urcelay, Witnauer, & Miller, 2012; for a review see also Urcelay & Miller, 2014). Second, we added a discrete context stimulus that was unique for each condition to enhance the distinctiveness of the contexts in each condition (Murphy & Baker, 2004;Waugh & Norman, 1965).…”