Introduction: In the last decade the prevalence of the use of interactive media (smartphone, tablet) by children has grown worldwide. However, it is not yet known what its effects are on the development of children in early childhood and whether the form of use (passive or active) influences this practice. In view of this, the present study aims to assess, through a randomized clinical trial (RCT), whether the form of use of mobile interactive media interferes with the Methods: The investigators propose an RCT with 64 children aged 24 to 36 months and their parents. Initially, identification, information about the child and history of media use will be carried out through the Questionnaire on the Use of Interactive Media, economic classification (Brazil Economic Classification Criterion). Then, the quality of the school environment (Infant / Toddler Environment Rating Scale) will be observed and, finally, measures of cognitive, motor and language development through the Bayley III Scale and Auditory Vocabulary Test. For follow-up purposes, parents will be asked to complete the Daily Record Board. Children will be randomly randomized into two groups: Active Interactive Media Group: children will use the media actively (games) and Passive Interactive Media Group: children will use the media passively (content viewing). Both groups will participate in the intervention for 30 minutes, three times a week, for 16 weeks. After this period, children will be reassessed for cognitive, language and fine motor development, receptive vocabulary and analysis of the Daily Record Board. Discussion: The results can provide (1) information on which form of use has the most benefits for children (2) guide parents, educators and health professionals on how to offer interactive media. Trial registration: This clinical trial was submitted to and approved by the Research Ethics Committee of Universidade Federal dos Vales do Jequitinhonha e Mucuri (CAAE 29490420.9.0000.5108). The complete protocol was registered in the Clinical Trials REBEC ( https://ensaiosclinicos.gov.br) under number RBR-8j3tzw Keywords: Child Development, Tablet, Interactive Tutorial, Clinical Trial.
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Cognitive development was chosen as a primary outcome measure, as interactive media it is known to be affected by interactive media.
Timeframe: Tests performed before the intervention
Motor development was chosen as a primary outcome measure, as interactive media it is known to be affected by interactive media.
Timeframe: Tests performed before the intervention
Language development was chosen as a primary outcome measure.
Timeframe: Tests performed before the intervention
Change Cognitive development was chosen as a primary outcome measure, as interactive media it is known to be affected by interactive media.
Timeframe: Tests performed after 16 weeks of intervention
Change Motor development was chosen as a primary outcome measure, as interactive media it is known to be affected by interactive media.
Timeframe: Tests performed after 16 weeks of intervention
Change language development was chosen as a primary outcome measure.
Timeframe: Tests performed after 16 weeks of intervention