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Trust and cynicism: The unexpected costs of skepticism
Assuming the worst about people may shield you from disappointment, but research suggests it does little to prevent betrayal-and could harm your social life.
The friend who never showed up
Picture this: You arrive at a bar to meet a potential new friend, only for them to vanish without explanation. Thirty minutes later, a message arrives: "Sorry! My brother was in a car accident. Can we reschedule?"
Do you accept the excuse at face value, or assume it's a lie-and cut them off for good? Your reaction may reveal more about your worldview than you realize.
Measuring trust: The General Trust Scale
For over 20 years, psychologists have studied how people perceive others' intentions using tools like the General Trust Scale. Participants rate statements such as "Most people are basically honest" on a scale from 1 (disagree) to 5 (agree).
Contrary to expectations, those who score highest-optimists who believe in human goodness-aren't more easily fooled than cynics. A 2023 study led by Timothy Levine at the University of Oklahoma found no link between trust levels and the ability to detect lies in recorded interviews. Both groups fell for deception at similar rates, thanks to a universal "truth bias" that makes people default to believing others.
"There is no reliable signal to detect lies because cues vary from person to person," says David Markowitz, a communication professor at Michigan State University and study co-author.
David Markowitz, Michigan State University
Gullibility vs. trust: A critical distinction
While trust doesn't predict deception, gullibility does. Psychologist Alessandra Teunisse developed a Gullibility Scale to measure how prone people are to scams. Statements like "I'm not good at spotting manipulation" help identify those who overlook red flags.
In a controlled experiment, Teunisse sent fake phishing emails to participants. Those who clicked links scored higher on gullibility-but not on the General Trust Scale. "You can believe most people are kind while still recognizing when something's off," she explains.
The power of elevation
Optimism may even sharpen skepticism. Anne Hamby, a consumer psychologist at Boise State University, studied elevation-the warm feeling triggered by witnessing acts of extraordinary kindness. Participants who felt elevated were better at spotting scams, such as dubious herbal medicine ads.
"Elevation makes people think more critically about motives, both good and bad," Hamby says.
Anne Hamby, Boise State University
Trust as a self-fulfilling prophecy
Eric Neumann, a researcher at Stanford University, found that trust can shape behavior. His Self-Fulfilling Trust Mindset questionnaire asks whether "trusting others brings out their best." High scorers tend to be more empathetic and less envious-and their optimism often pays off.
In a two-player economic game, participants who trusted their partners initially received more generous returns. Neumann's unpublished research also shows that people who read about trust's benefits engaged in deeper conversations, fostering stronger connections.
How to trust without being naive
So how do you avoid deception without becoming jaded? Teunisse recommends seeking second opinions for high-stakes decisions. Neumann suggests "embodied learning": actively choosing to trust, even after betrayal, to break cycles of cynicism.
"You can learn to handle betrayal and move on," Neumann says. "Trusting wisely isn't about ignoring risks-it's about seeing the good in others while staying alert."
Key takeaways
- Cynicism doesn't prevent deception but may harm relationships.
- Trust and gullibility are separate traits; optimism can coexist with skepticism.
- Actively trusting others can create positive social feedback loops.
- Practical steps: Verify red flags, seek advice, and practice trust mindfully.
David Robson is a science writer and author of The Laws of Connection: 13 Social Strategies That Will Transform Your Life (2024).
