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EYT Mr Ant

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Early Years Toolbox (EYT) Mr. Ant is an iPad-based assessment of pre-school and early primary school students' working memory (i.e., the amount of visual information that concurrently can be coordinated in mind). In this game, children are presented with an image of a cartoon character – Mr. Ant – who has a number of coloured stickers placed on different parts of his body. After a short while Mr. Ant disappears and, once he reappears without any stickers, the child is asked to recall the locations of the stickers by tapping where the stickers used to be. Trials are presented in order of difficulty, with a stop rule after a prescribed number of incorrect responses to prevent frustration associated with overly difficult items. This game takes approximately 5-10 minutes to complete.

Scores are presented on the final assessment screen. For more precise research applications, there are options to have the item by item data sent to a user-specified e-mail address or database. For more information, brief EYT training videos, and analysis resources, please visit

Languages embedded: English, Afrikaans, Xhosa, Sotho, Zulu, and more in progress

About the Early Years Toolbox:

The 'Early Years Toolbox' (EYT, for short) is comprised of six brief, engaging game-like assessments of young children’s self-regulation, executive functioning and vocabulary. These assessments are based on well-established and widely used measures for young children (e.g., go/no-go, dimensional change card sort), yet have been adapted and optimised on the basis of 20+ years of research experience with this age group.

NOTE FOR RESEARCHERS. If using this app for research and/or publication purposes, please cite the following as the original source articles (please feel free to contact us for copies of these articles):

Howard, S. J., & Okely, T. (2015). Catching fish and avoiding sharks: Investigating factors that influence developmentally appropriate measurement of preschoolers’ inhibitory control. Journal of Psychoeducational Assessment, 33(6), 585-596.

Howard, S. J., & Melhuish, E. (2015). An Early Years Toolbox (EYT) for assessing early executive function, language, self-regulation, and social development: Validity, reliability and preliminary norms. Manuscript accepted for publication in Journal of Psychoeducational Assessment.