Underestimating digital media harm
[METADATA ONLY; THE BODY IS PAYWALLED AND WAS NOT READ. This is a Matters Arising piece and carries NO ABSTRACT by article type, confirmed in the publisher metadata. Author order confirmed at api.crossref.org, Twenge sequence 'first', and at the publisher record. Everything below about substance is inferred from verified titles, figure captions, the author-contribution statement and the reference list, and is flagged as inference rather than argument text] Twenge, J. M., Haidt, J., Joiner, T. E., & Campbell, W. K. (2020). 'Underestimating digital media harm.' Nature Human Behaviour, 4, 346-348. doi:10.1038/s41562-020-0839-4. NOT A STUDY: a published comment on Orben and Przybylski 2019, in the same journal. VERIFIED FIGURE CAPTIONS: Fig. 1 'Percentage of the MCS cohort with clinically relevant depressive symptoms as a function of social media use'; Fig. 2 'Average linear r values between well-being and various factors in boys and girls from two datasets'. VERIFIED CONTRIBUTION STATEMENT: 'J.M.T. developed the study concept, analysed the data and wrote the first draft.' VERIFIED REFERENCE LIST, which is itself the clue to the argument: it is an effect-size-interpretation case, citing Funder and Ozer 2019, Abelson 1985 'A variance explanation paradox: when a little is a lot', Ferguson 2009 and Rosnow and Rosenthal 2003, plus Schisterman 2009 on overadjustment bias and Rohrer 2018 on causal models. WHAT IS CONTESTED, ON THE VERIFIED EVIDENCE ONLY: the SIZE of the association and the analytic specification that produces it. NOT the direction, which both sides agree is negative, and NOT the existence of the trend. The specific technical charge the reference list points at is over-adjustment, controlling for variables that are themselves part of the causal path, which deflates the estimate. NOTHING HERE IS A CHARACTERISATION OF ANY AUTHOR.
[METADATA ONLY; THE BODY IS PAYWALLED AND WAS NOT READ. This is a Matters Arising piece and carries NO ABSTRACT by article type, confirmed in the publisher metadata. Author order confirmed at api.crossref.org, Twenge sequence 'first', and at the publisher record. Everything below about substance is inferred from verified titles, figure captions, the author-contribution statement and the reference list, and is flagged as inference rather than argument text] Twenge, J. M., Haidt, J., Joiner, T. E., & Campbell, W. K. (2020). 'Underestimating digital media harm.' Nature Human Behaviour, 4, 346-348. doi:10.1038/s41562-020-0839-4. NOT A STUDY: a published comment on Orben and Przybylski 2019, in the same journal. VERIFIED FIGURE CAPTIONS: Fig. 1 'Percentage of the MCS cohort with clinically relevant depressive symptoms as a function of social media use'; Fig. 2 'Average linear r values between well-being and various factors in boys and girls from two datasets'. VERIFIED CONTRIBUTION STATEMENT: 'J.M.T. developed the study concept, analysed the data and wrote the first draft.' VERIFIED REFERENCE LIST, which is itself the clue to the argument: it is an effect-size-interpretation case, citing Funder and Ozer 2019, Abelson 1985 'A variance explanation paradox: when a little is a lot', Ferguson 2009 and Rosnow and Rosenthal 2003, plus Schisterman 2009 on overadjustment bias and Rohrer 2018 on causal models. WHAT IS CONTESTED, ON THE VERIFIED EVIDENCE ONLY: the SIZE of the association and the analytic specification that produces it. NOT the direction, which both sides agree is negative, and NOT the existence of the trend. The specific technical charge the reference list points at is over-adjustment, controlling for variables that are themselves part of the causal path, which deflates the estimate. NOTHING HERE IS A CHARACTERISATION OF ANY AUTHOR.
Written from the mETADATA ONLY; THE BODY IS PAYWALLED AND WAS NOT READ. This is a Matters Arising piece and carries NO ABSTRACT by article type, confirmed in the publisher metadata. Author order confirmed at api.crossref.org, Twenge sequence 'first', and at the publisher record. Everything below about substance is inferred from verified titles, figure captions, the author-contribution statement and the reference list, and is flagged as inference rather than argument text.
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Twenge, J. M., Haidt, J., Joiner, T. E., & Campbell, W. K. (2020). 'Underestimating digital media harm.' Nature Human Behaviour, 4, 346-348. doi:10.1038/s41562-020-0839-4