Our thinking is not always rational and accurate. In fact, the brain is often influenced by various cognitive biases that affect our judgments and decisions, leading to errors and mistakes. Fortunately, scientific research has revealed many effective methods to help us identify and overcome these cognitive traps. The following 13 tips, based on cognitive science and psychology research, can help you improve the quality of your thinking and make wiser choices.
1. Always actively consider, “Are there other viable options?”
The human brain tends to focus on the most obvious information at hand, often overlooking other possible solutions and perspectives. This “attention bandwidth” limitation can cause us to miss better alternatives. Training yourself to constantly ask, “Is there another solution?” is a key way to enhance reasoning ability.
Even forcing yourself to list a few alternative options can significantly reduce cognitive bias. As Robert Rubin once noted, he encountered people whose understanding of the world far exceeded their focus on the task before them. When making decisions, we should consider not only the final choice but also the paths we give up, enabling a more comprehensive evaluation of pros and cons.
2. Learn to redefine problems and think from different angles
The same statement phrased differently can produce drastically different cognitive effects. For example, a bar of soap described as “99.4% pure” feels very different from one described as “containing 0.6% harmful substances.”
In real life, advertisers, politicians, the media, and even people around us use language tricks to influence our judgment. We must remain skeptical and actively examine issues from multiple angles. For example, regarding euthanasia, do you understand it as a safeguard against illegal killing, or as a humane way to help people die with dignity? Changing perspectives often helps avoid mental rigidity and leads to a fuller understanding of the issue.
3. Remember: “Correlation does not equal causation”
We are often misled by superficial data correlations. For instance, American statistics found a strong correlation between shoe size and knowledge level — larger feet seemed linked to more knowledge. But this does not mean buying bigger shoes makes you smarter; it’s merely an illusion caused by differences between infants and adults.
This type of cognitive error is common in everyday judgments, such as “people who read more earn more,” which is correlation, not cause and effect. Understanding and remembering this helps us avoid blindly accepting unverified causal claims and reduces misjudgments.
4. Always pay attention to sample size and beware of small-sample misleading
Whether in medical research or sports statistics, the sample size determines the reliability of conclusions. A single event might be random, but when a pattern repeatedly appears in large samples, the conclusion is more convincing.
The law of large numbers tells us that the larger the sample, the closer the results are to reality. Unfortunately, many still ignore sample size and put too much trust in small-sample data’s superficial conclusions. For example, a baseball player’s short-term excellent performance may just be luck, not a real skill improvement.
Learning to recognize the influence of sample size helps us avoid being misled by false data and make more rational decisions.
5. Anticipate impulses and set psychological “guardrails” in advance
Like Odysseus tying himself to the mast to resist the sirens’ temptation in Greek mythology, we also need to pre-set limits to control impulses. For example, making a shopping list beforehand and sticking to buying only planned items can prevent impulsive junk food purchases when hungry.
Many economists believe that pre-saving money and “restricting spending” may seem irrational but are actually rational responses to human cognitive limitations. The hardest moment to resist temptation is when it’s within reach. Planning ahead and setting rules help us avoid impulsive decisions and move steadily forward.
6. Don’t just set goals — make “if-then” contingency plans
Simply setting goals like “I want to lose weight” is often too vague and hard to execute. Psychologist Peter Gollwitzer’s research shows that making specific plans such as “If I see fries, then I will walk away” can greatly increase goal achievement rates.
This works because our behavioral control system responds better to concrete conditional instructions rather than abstract goals. Using “if… then…” plans helps bypass cognitive blind spots and enables automatic execution of desired behaviors.
7. Avoid making major decisions when fatigued or distracted
When physically or mentally tired, or when attention is divided, our brain relies more on automatic reflexes than rational thinking. Decisions made in such states are like drunk driving — extremely risky.
Studies show that when people are asked to memorize numbers while choosing, they tend to pick instant gratification like sweets instead of healthy food. To make rational choices, important decisions should be scheduled during times of mental alertness and focus, ensuring adequate rest and energy.
8. Continuously weigh benefits and costs, pay attention to “opportunity cost”
Balancing pros and cons is the basis of rational decision-making, but our personality and emotions often interfere. We tend to fall into extremes of “loss aversion” or “gain seeking,” neglecting overall balance.
Especially important is understanding “opportunity cost” — choosing one thing means giving up other possibilities. For example, playing games or scrolling short videos takes time that could be used for exercise or family. This invisible cost is often ignored. Understanding opportunity cost helps optimize allocation of time and resources.
9. Imagine your decisions will be supervised or questioned by others
Research finds that when people anticipate having to explain their decisions, they invest more cognitive effort and make more reasonable choices. A sense of responsibility triggers more detailed analysis and complex thinking.
Interestingly, some offices hang posters with “eyes” in public areas, which increases employee compliance in payments because subconsciously they feel watched. This simple psychological mechanism reminds us that cultivating self-monitoring awareness reduces careless and erroneous cognition.
10. Learn to maintain psychological distance from yourself, avoid emotions clouding judgment
While Buddhism’s “living in the moment” is important, in many decisions, we must transcend current emotions and consider long-term goals. For example, angrily emailing your boss might satisfy emotion short-term but cause long-term workplace harm.
The brain perceives “near” and “far” differently; near problems are concrete and clear, far ones more abstract. Learning to view yourself from a third-person perspective and setting limits on emotions helps make more rational decisions at critical moments.
11. Develop habits and use fixed routines to reduce cognitive load
Exercising, reading, or writing at fixed times daily not only accumulates benefits but also reduces the cognitive pressure from ad-hoc decisions. The brain prefers automated behaviors, and good habits save mental resources for complex problems.
12. Maintain critical thinking, avoid blindly trusting authority or popular opinions
Humans naturally tend to conform to authority and groups, easily accepting unverified information. We need to cultivate skepticism, actively verify and think from multiple angles, and not be fooled by “experts say so” or “everyone says so.”
13. Continuously learn and self-reflect to correct cognitive biases
Cognitive defects don’t disappear automatically; only through learning new knowledge, accepting feedback, and repeated reflection can we gradually correct errors. Maintaining an open mind and lifelong learning habit is the fundamental way to improve cognitive ability.
By applying these scientific tips, we can more clearly recognize our thinking limitations and adopt practical strategies to overcome cognitive defects. Improving decision quality helps not only in work and study but also makes life more rational and joyful.