A large-scale study reveals that while higher cognitive ability is generally linked to greater trust in others, this benefit is dramatically reduced for people who experienced childhood disadvantage. The findings suggest that early adversity can suppress the social advantages that intelligence typically provides, potentially reinforcing inequality across generations.
The Research
Professor Chris Dawson from the University of Bath analyzed data from over 24,000 people across the UK, published in Personality and Social Psychology Bulletin in May 2026. He examined how childhood environments—including workless households, single-parent homes, care settings, and parents with low education or occupational status—affect both cognitive development and adult trust levels.
The key finding: among people from advantaged backgrounds, higher cognitive ability strongly correlated with greater trust. But for those who experienced two or more forms of childhood disadvantage, the same level of intelligence had only about half the effect on trust. In other words, the "intelligence-to-trust" pipeline is significantly suppressed by early adversity.
Professor Dawson explains: "In stable, supportive environments, people with higher cognitive ability learn that trust pays off socially and economically. But in harsher environments marked by instability, crime, or unreliable institutions, there are fewer opportunities to learn that trust is beneficial. Intelligence may simply have fewer chances to translate into trust."
Why It Matters
Trust is a foundation for building relationships, succeeding in organizations, and participating in society. If early disadvantage blunts the social returns on intelligence, it creates a "Matthew Effect"—where those who start with advantages not only develop stronger skills but also gain more benefits from those skills throughout life. This means that even high-IQ individuals from disadvantaged backgrounds may not reap the same social and economic rewards as their peers from privileged homes.
For anyone curious about their own cognition, this research underscores that cognitive scores don't tell the whole story. The environment you grew up in shapes how your intelligence translates into real-world outcomes, like trust and cooperation.
What You Can Do
While you can't change your childhood, you can be aware of this bias. Actively seek environments and relationships that reward trust. If you grew up in adversity, recognize that caution may be a learned survival strategy, but that trust can be rebuilt in safe contexts. Consider brain training exercises that focus on social reasoning and emotional regulation—these may help strengthen the connection between intelligence and social trust.
Source: Neuroscience News
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