reactance theory, developed by psychologist Jack Brehm to explain the human response to diminishing personal control. According to the theory, whenever free choice is limited or threatened, the need to retain our freedoms makes us desire them (as well as the goods and services associated with them) significantly more than previously. So when increasing scarcity—or anything else—interferes with our prior access to some item, we will react against the interference by wanting and trying to possess the item more than before.107
