People may use the self-regulatory strategy of forming implementation intentions (i.e., if-then plans) to make better consumer decisions and facilitate the translation of those decisions into action. First, research on the mechanisms and effects of implementation intentions is reviewed. Second, we discuss how implementation intentions can be used to improve consumer decision making by promoting attention control and information elaboration, and overcoming disruptive influences. Third, we consider the various problems that militate against the enactment of one's decisions, and evidence is presented to show that implementation intentions are still effective even when goal attainment does not seem to be amenable to self-regulation. Finally, potential moderators of implementation intention effects are discussed.Research on consumer decision making and behavior focuses on what determines a person's decisions and whether such decisions are translated into action. Accumulated evidence suggests that consumers' decisions are strongly affected by the information presented and how willing and able perceivers are to process that information. For instance, it matters whether information about a given product uses images or words, general versus detailed statements, or emotional versus factual content (e.g., Kramer & Yoon, 2007;Wyer, Hung, Jiang, 2008;Yoon, Cole, & Lee, 2007). Whether one or the other type of information has greater impact on people's decisions is influenced by features of the recipients such as their cognitive capacity, motivation, mood, age, inter alia. The enactment of consumer decisions, on the other hand, has been found to depend on features of the situational context in which action is initiated (e.g., the presence of barriers, distractions, bad habits, and social support), the strength of the person's commitment to purchasing the item (e.g., persistence in obtaining the product), and available resources (e.g., credit rating or negotiation skills). This paper proposes that people can control the influence of such determinants on consumer decision making and decision realization by adopting a self-regulatory strategy called implementation intentions (i.e., if-then plans). Using this strategy, people plan out in advance exactly how they will respond in situ. In the case of decision making, such plans may pertain to how deeply presented information is processed (e.g., in a systematic rather than a heuristic fashion) or how much weight should be attached to different types of information (e.g., affective versus cognitive). In the case of decision realization, such plans may specify how to get started with enacting the consumer decision (e.g., planning the time and place of purchase) or how to shield decision enactment from disruptive influences (e.g., dealing with a domineering salesperson). In other words, we will suggest that if-then plans that specify do's and don'ts of effective decision making and decision implementation can facilitate good consumer decisions and behavioral enactment. By using if-then p...