By Yeager et al. (2019) Abstract : A global priority for the behavioural sciences is to develop cost-effective, scalable interventions that could improve the academic outcomes of adolescents at a population level, but no such interventions have so far been evaluated in a population-generalizable sample. Here we show that a short (less than one hour), online growth mindset intervention— which teaches that intellectual abilities can be developed—improved grades among lower-achieving students and increased overall enrolment to advanced mathematics courses in a nationally representative sample of students in secondary education in the United States. Notably, the study identified school contexts that sustained the effects of the growth mindset intervention: the intervention changed grades when peer norms aligned with the messages of the intervention. Confidence in the conclusions of this study comes from independent data collection and processing, preregistration of analyses, and corrobor
Showing posts from 2019
Meta-analyses of positive psychology interventions: The effects are much smaller than previously reported
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Carmela A. White, Bob Uttl, Mark D. Holder (2019) Abstract For at least four decades, researchers have studied the effectiveness of interventions designed to increase well-being. These interventions have become known as positive psychology interventions (PPIs). Two highly cited meta-analyses examined the effectiveness of PPIs on well-being and depression: Sin and Lyubomirsky (2009) and Bolier et al. (2013). Sin and Lyubomirsky reported larger effects of PPIs on well-being (r = .29) and depression (r = .31) than Bolier et al. reported for subjective well-being (r = .17), psychological wellbeing (r = .10), and depression (r = .11). A detailed examination of the two meta-analyses reveals that the authors employed different approaches, used different inclusion and exclusion criteria, analyzed different sets of studies, described their methods with insufficient detail to compare them clearly, and did not report or properly account for significant small sample size bias.
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Nobel prize winner economist Joseph Stiglitz has written a new book called People, Power and Profits . In this book he describes how, since the mid-1970s has been dominated by a conservative ideology which, step-by-step has brought every increasing inequality and the undermining of democracy. In the book, Stiglitz explains what's wrong and what's needed and how to move forward.