Search Results - Janssen, Ian, Ph.D

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  1. 1
    Estimating Whether Replacing Time in Active Outdoor Play and Sedentary Video Games With Active Video Games Influences Youth's Mental Health

    Estimating Whether Replacing Time in Active Outdoor Play and Sedentary Video Games With Active Video Games Influences Youth's Mental Health by Janssen, Ian, Ph.D

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  2. 2
    How Are Adolescents Sleeping? Adolescent Sleep Patterns and Sociodemographic Differences in 24 European and North American Countries

    How Are Adolescents Sleeping? Adolescent Sleep Patterns and Sociodemographic Differences in 24 European and North American Countries by Gariepy, Genevieve, Danna, Sofia, Gobiņa, Inese, Rasmussen, Mette, Gaspar de Matos, Margarida, Tynjälä, Jorma, Janssen, Ian, Kalman, Michal, Villeruša, Anita, Husarova, Daniela, Brooks, Fiona, Elgar, Frank J., Klavina-Makrecka, Solvita, Šmigelskas, Kastytis, Gaspar, Tania, Schnohr, Christina

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  3. 3
    Patterns of Adolescent Physical Activity, Screen-Based Media Use, and Positive and Negative Health Indicators in the U.S. and Canada

    Patterns of Adolescent Physical Activity, Screen-Based Media Use, and Positive and Negative Health Indicators in the U.S. and Canada by Iannotti, Ronald J., Ph.D, Kogan, Michael D., Ph.D, Janssen, Ian, Ph.D, Boyce, William F., Ph.D

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