The Problem-Solving Box: A Novel Task for Assessing Executive Functions in 1.5- to 4-year-olds
Executive Functions (EFs) underpin the ability to work towards goals by co-ordinating thought and action. Difficulties with EF are implicated in many neurodevelopmental disorders. Research into the early development and remediation of EF difficulties has been hampered by a scarcity of measures suitable for very young children. We introduce a novel problem-solving task involving a box containing 3 visible rewards. Retrieval of all 3 rewards requires generation of multiple strategies, inhibition of previously-successful strategies, and persistence despite set-backs. The task requires integrative application of EFs, and mirrors the un-structured nature of real-world tasks. Exploratory analysis of data from 110 typically-developing British and Swedish children who attempted this 5-minute task indicates the task is developmentally appropriate for 1.5- to 4-year-olds. Preschoolers were more successful problem-solvers than toddlers. Age-related improvements were observed for generativity and persistence, but age was not associated with perseveration. Boys achieve higher overall scores, and were less perseverative, than girls. The low social and language demands of the task, and the ability to identify areas of relative strength and weakness even when success is not fully achieved, are markers of the task’s potential as a dimensional measure of early EF skills.