Peter Wason

Peter Wason was a cognitive psychologist known for his work on human reasoning and decision-making. He conducted experiments to understand how people think and solve problems, particularly focusing on how they test hypotheses and sometimes make errors. One famous experiment involves a simple card task that reveals how people tend to seek confirming evidence rather than testing all possibilities, illustrating confirmation bias. Wason’s research has helped us understand the cognitive processes behind reasoning, showing that humans often rely on flawed heuristics, which can lead to mistakes in judgment and problem-solving.