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Brooke N. Macnamara Profile picture
Brooke N. Macnamara
@BrookeMacnamara
Associate Professor, Cognitive Psychologist - Individual Differences, Cognitive Abilities, Skill/Expertise/Achievement @BrookeMacnamara@fediscience.org
Jul 24, 2023 • 49 tweets • 9 min read
Our systematic review & pre-registered meta-analysis of growth mindset interventions on academic achievement and our reply to commentaries is now out in Psychological Bulletin.

A (long) thread.psycnet.apa.org/record/2023-14… First, some findings from the systematic review:

• studies authored by researchers with financial incentives to report positive effects were > 2.5x as likely to report positive effects

• > 90% of studies had confounds in their study design
Feb 4, 2020 • 8 tweets • 2 min read
We examined 6 key claims of mindset theory. The strongest association (r=−.12) was in the opposite direction from the theory's claim. We suggest the foundations of mindset theory are not firm and that bold claims about mindset appear to be overstated. 1/8 journals.sagepub.com/doi/full/10.11… Mindset theorists claim mindset has "profound" effects on motivation & achievement, creates diff
"psychological worlds," & forms the "core" of people’s meaning systems. Evidence should be at least as strong as the average effect in social psych research, right? We tested this.