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Governments around the world are restricting children's access to digital technology faster than the evidence supporting those restrictions has accumulated. This whitepaper maps the current regulatory landscape (statutory minimum ages for social media, time-limit regimes, school device restrictions and design regulation) and reviews the research on which these measures rely. Its central argument is that "screen time" is too coarse a unit to answer the question regulators are asking. Aggregate duration is a weak predictor of outcomes and is poorly measured; the signal in the literature appears where researchers distinguish what children do, how a product is designed, and whether an adult is involved. Where restrictions have been evaluated (Chinese playtime mandates, Australia's under-16 regime, UK school phone policies), they have found less effect than their proponents anticipated. The paper then specifies the distinction in feature-level terms: six attention-capturing design mechanisms and a ten-dimension framework for telling attention-extractive from learning-supportive design. It applies the framework to children's digital reading, the best-evidenced area of educational technology, examining which features support comprehension and which do not, with the BOOKR Class platform as a case study drawing on a Hungarian classroom study and a Jordanian Ministry of Education pilot. A further section extends the analysis to conversational AI and proposes ten design rules for AI systems used by children. The paper closes with ten recommendations for policymakers, schools and developers, including: regulate design, not duration; define educational exemptions by what a product does, not by its label; fund teacher capability alongside licences; and require independent evaluation of educational technology, including the authors' own. Regulatory developments are described as at September 2026. Revised edition.
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Zsuzsanna Balogh (2026) studied this question.
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