“…Testing PC effects required a conflict task, but most available conflict tasks were unsuitable for this purpose: The word reading required by the classic Stroop task was not appropriate for 5- to 6-year-olds, and child-friendly variants such as the day-night Stroop (Montgomery & Koeltzow, 2010) typically include only two items, which can involve mechanisms other than cognitive control such as contingency learning (see Braem et al, 2019; Schmidt & Besner, 2008). We chose to use the fruit Stroop (Archibald & Kerns, 1999; see also Ambrosi et al, 2016; Macdonald et al, 2014; Okuzumi et al, 2015), where children view fruits colored in correct (e.g., a banana in yellow) or incorrect colors (e.g., a banana in red), and answer according to the canonical color of the fruit rather than its displayed color (e.g., children should always answer “yellow” for a banana regardless of whether it is displayed in yellow or in another color). This task requires no word reading and allows for four stimuli, while resembling the classic Stroop in its use of matching and mismatched colors.…”