Freedom or commitment. Schwartz connects this issue to economist Albert Hirschman's research into how populations respond to unhappiness: they can exit the situation, or they can protest and voice their concerns. While free-market governments give citizens the right to express their displeasure by exit, as in switching brands, Schwartz maintains that social relations are different. Instead, we usually give voice to displeasure, hoping to project influence on the situation. Second-order decisions. Law professor Cass Sunstein uses the term "second-order decisions" for decisions that follow a rule. Having the discipline to live "by the rules" eliminates countless troublesome choices in one's daily life. Schwartz shows that these second-order decisions can be divided into general categories of effectiveness for different situations: presumptions, standards, and cultural codes. Each of these methods are useful ways people use to parse the vast array of choices they confront. Missed opportunities. Schwartz finds that when people are faced with having to choose one option out of many desirable choices, they will begin to consider hypothetical trade-offs. Their options are evaluated in terms of missed opportunities instead of the opportunity's potential. In other words, after choosing an alternative with a plurality but not a majority of utility, people remember the sum of the lost utility rather than that they made the "utility-maximizing" choice. Schwartz maintains that one of the downsides of making trade-offs is it alters how we feel about the decisions we face; afterwards, it affects the level of satisfaction we experience from our decision. While psychologists have known for years about the harmful effects of negative emotion on decision making, Schwartz points to recent evidence showing how positive emotion has the opposite effect: in general, subjects are inclined to consider more possibilities when they are feeling happy. Mixed findings Attempts to duplicate the paradox of choice in other studies have had mixed success. A meta-analysis incorporating research from 50 independent studies found no meaningful connection between choice and anxiety, but speculated that the variance in the studies left open the possibility that choice overload could be tied to certain highly specific and as yet poorly understood pre-conditions. A new meta-analysis, conducted in 2015 and incorporating 99 studies, was able to isolate when reducing choices for your customers is most likely to boost sales. The study identified four key factors—choice set complexity, decision task difficulty, preference uncertainty, and decision goal—that moderate the impact of assortment size on