Allen, Jedediah W.P.Bickhard, M. H.2019-02-012019-02-0120180885-2014http://hdl.handle.net/11693/48709It has become increasingly clear over the last half century that there are multiple importantchanges in children’s abilities taking place at around age 4. These changes span social, emotional,and cognitive domains. While some researchers have argued that a domain-general developmentexplains some of the changes, such a position is a minority view. In the current article, weprovide some evidence for the development of an age 4 domain-general enabling constraint onchildren’s ability to reflect. In turn, the development of reflection is argued to enable the tran-sitions that we see within and across developmental domains. The model of reflection beingoffered is part of a broader action-based model of cognition and mind–interactivism (Bickhard,1973, 1978, 2009a,b). The empirical part of the article presents a new object reasoning task. Thistask was derived from theoretical constraints on the interactivist models of knowing and re-flection. Results indicated that most children responded to the task incorrectly until age 4 whichwas interpreted as evidence that they lacked the ability to explicitly reason about relations be-tween objects. Correlations between our new task and standard false-belief tasks were explored.Collectively, these results provide empirical support for the claim that children undergo a do-main-general development in their ability for epistemic reflection at around age 4EnglishInteractivismAction-based approachesReflectionFalse-beliefObject representationPreschoolersArticle10.1016/j.cogdev.2017.12.0051879-226X