19 Is the New 60 | Lenore Skenazy (WSJ)

Lenore Skenazy; 19 Is the New 60; In The Wall Street Journal (WSJ); 2017-08-10.
Teaser: Adults should stop stealing away the time kids need to play.

Original Sources

Nineteen Year Olds As Sedentary As Sixty Year Olds Study Suggests; press release; Johns Hopkins University; 2017.
Teaser: Teen years represent highest risk for inactivity; increases in activity levels only seen in 20-somethings

Vijay R. Varma, Debangan Dey, Andrew Leroux, Junrui Di, Jacek Urbanek, Luo Xiao, Vadim Zipunnikov, “Re-evaluating the effect of age on physical activity over the lifespan,” In Preventive Medicine, 2017-06-01.


  • <pull-quote>When it comes to physical activity, 19 is the new 60. </pull-quote>
  • The Study. That. Shows.
    • 2017-06.
    • N=12,500
    • panel
    • tracking device logging & diaries
    • Authors
      • Vadim Zipunnikov, professor, Johns Hopkins University
      • and others
  • <quote>Correlation isn’t causation</quote>, attributed to Lenore Skenazy. Yes, she actually uttered that in the essay.
  • Peter Gray, professor, psychology, Boston College


  • loss of “locus of control,”
  • strong connection (a link? as it were) between happiness and feeling in control of life.


  • Vadim Zipunnikov, professor, Johns Hopkins University
  • Peter Gray, professor, psychology, Boston College


The Danger of Back to School | Psychology Today

Peter Gray; The Danger of Back to School; In Freedom to Learn of Psychology Todahy; 2014-08-07.
Teaser: Children’s Mental Health Crises Plummet in Summer and Rise in the School Year


Peter Gray; Free to Learn: Why Unleashing the Instinct to Play Will Make Our Children Happier, More Self-Reliant, and Better Students for Life; Basic Books; 2013-03-05; 288 pages; Amazon:0465025994; Kindle: $12, paper: $8+SHT.




In Psychology Today


The Decline of Play and Rise in Children’s Mental Disorders | Psychology Today

The Decline of Play and Rise in Children’s Mental Disorders; Peter Gray; In Psychology Today; 2010-01-26.
Teaser: There’s a reason kids are more anxious and depressed than ever.



  1. J. Twenge, et al. (2010). Birth cohort increases in psychopathology among young Americans, 1938-2007: A cross-temporal meta-analysis of the MMPI. In press, Clinical Psychology Review 30, 145-154.
    Nearby: Jean M. Twenge; Time Period and Birth Cohort Differences in Depressive Symptoms in the U.S., 1982–2013; In Social Indicators Research; 2015-04; 36 pages; draft; paywall. separately filled.
  2. J. Twenge et al. (2004). Its beyond my control: A cross-temporal meta-analysis of increasing externality in locus of control, 1960-2002. Personality and Social Psychology Review, 8, 308-319.
  3. J. H. Pryor, et al. (2007). The American freshman: Forty-year trends, 1966-2006. Los Angeles: Higher Education Research Institute.
  4. Hara Estroff Marano. A Nation of Wimps
  5. Lenore Skenazy Free Range Kids.
  6. K. C. Herman, et al. (2009). Childhood depression: Rethinking the role of school. Psychology in the Schools, 46, 433-446.
  7. M. Csikszentmihalyi, J. Hunter. (2003). Happiness in everyday life: The uses of experience sampling. Journal of Happiness Studies, 4, 185-199.