Genetics Outweigh Upbringing in Shaping Intelligence and Career Success, Study Finds
A new study tracking twins over four years has found that genetics play a far bigger role in intelligence and career success than previously believed. Researchers followed identical and fraternal twins from age 23 to 27 to understand how genes and upbringing shape life outcomes. The results suggest that inherited traits heavily influence where people end up in education, work, and earnings. The study revealed that IQ is roughly 75% determined by genetics. Even more striking, the connection between a person's intelligence and their later income, education, and job status is 69% to 98% explained by genetic factors.
While hard work remains important, the research found that natural abilities and drive are largely shaped by DNA. A supportive upbringing helps, but the study suggests parents have limited power to reshape their child's long-term success through home life alone. Instead, the findings imply that nurturing a child's natural strengths may be more effective than pushing them toward a specific career path. The results also raise doubts about policies aimed at levelling socioeconomic differences. If genetics play such a dominant role, the study argues, efforts to create equal outcomes through environment alone may fall short. The researcher described the findings as a 'description of reality' and suggested that policies should focus on supporting diverse talents rather than assuming everyone can achieve the same results with identical opportunities.
The study highlights the strong influence of genetics on intelligence and career success. While upbringing still matters, the data shows that inherited traits are a more powerful predictor of life outcomes. These findings could prompt a rethink of how education and social policies are designed to match individual abilities.
