WHAT MATTERS LESS THAN WE THINK Not only do we undervalue the qualities that matter for long-term relationships, we overvalue irrelevant ones. In part, we can blame a cognitive error called the focusing illusion—our tendency to overestimate the importance of certain factors when anticipating outcomes, like our future happiness. Behavioral economists Daniel Kahneman and David Schkade explored this phenomenon. They asked people attending college in Michigan and Ohio who they thought were happier—Midwestern students, like themselves, or students in California. They asked students in Southern
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This can be generalized to comparing products online and then focusing on the differences. You pay more attention to aspects that are presented to you even though they might not be that important.