Think twice before buying a convertible on a sunny day

If you lean against a bright red convertible parked outside a car dealership on a beautiful sunny day, it's easy to imagine yourself driving the car—on the open road, cool wind blowing in your hair, and without a care in the world. But research suggests you might be better off walking away from the dealership before you make a decision you may come to regret.

People are substantially more likely to buy a convertible on an unseasonably warm day, according to a study by “Projection bias in predicting future utility,” The Quarterly Journal of Economics, 2003.