Data: replicationindex.com/tag/feeling-...
Data: replicationindex.com/tag/feeling-...
💡 Bonus content:
We did not find any evidence for the idea that having “to much” cognitive ability is bad for your mental health.
📄 Full study: doi.org/10.1177/0956...
💡 Bonus content:
We did not find any evidence for the idea that having “to much” cognitive ability is bad for your mental health.
📄 Full study: doi.org/10.1177/0956...
📉 The findings suggest an under-recognized high-risk group:
Individuals with low cognitive abilities + low education are particularly vulnerable to develop a mental illness.
📉 The findings suggest an under-recognized high-risk group:
Individuals with low cognitive abilities + low education are particularly vulnerable to develop a mental illness.
🔍 We used sibling fixed-effects models to control for shared family background—some genetics, upbringing, socioeconomic status, etc.
📌 So differences in mental health risk can’t be explained by shared family environment.
🔍 We used sibling fixed-effects models to control for shared family background—some genetics, upbringing, socioeconomic status, etc.
📌 So differences in mental health risk can’t be explained by shared family environment.
🧬 Why is this study so robust?
✅ Huge sample: 272,351 men
✅ Nationwide administrative data
✅ Diagnoses from hospital records—not self-report
✅ Cognitive scores from mandatory military screening. In our cohorts, basically every male in the population was required to participate.
🧬 Why is this study so robust?
✅ Huge sample: 272,351 men
✅ Nationwide administrative data
✅ Diagnoses from hospital records—not self-report
✅ Cognitive scores from mandatory military screening. In our cohorts, basically every male in the population was required to participate.
🎓 Educational attainment also independently predicted better mental health.
But the highest risk was for men who were low in both cognition and education.
This group faced the highest probability of adult psychiatric diagnoses.
🎓 Educational attainment also independently predicted better mental health.
But the highest risk was for men who were low in both cognition and education.
This group faced the highest probability of adult psychiatric diagnoses.
🧠 Higher cognitive ability at age 18 predicted lower risk of all psychiatric disorders at ages 36–40—especially substance abuse.
✅ This held even when comparing brothers raised in the same family.
🧠 Higher cognitive ability at age 18 predicted lower risk of all psychiatric disorders at ages 36–40—especially substance abuse.
✅ This held even when comparing brothers raised in the same family.