Scope insensitivity

Scope insensitivity, also known as scope neglect, is the psychological phenomena by which people fail to scale their valuation of a problem or situation as it increases or decreases in magnitude. For example, we are more likely to purchase a coffee every day if we think about it as spending $2.50 every day, than if we think about it as spending $75 a month on coffee (30 days x $2.50).