Proposition that they ask is that when the consumer has unlimited resources, then the persuasion knowledge will be used to influence the persuasion motive and will affect the evaluation towards the salesperson. They adopted the Persuasion Knowledge Model (PKM) with major postulations that consumers develop knowledge about persuasion and use that knowledge to compete with section persuaded. Therefore the use of persuasion knowledge depends on the accessibility of persuasion motive, then consumers will not appreciate the company doing extra effort if it is based on persuasion. Morales research (2005) examined only increased efforts by the company, although the quality has not changed. The result showed that the likelihood of the consumer to buy is higher for firms with extra effort, even though there was no increase in quality. It draws on research conducted by Kirmani and Wright (1989). They conceptualize the process by which ad costs are perceived role as a guide to quality. Folkes (1988) emphasized the importance of attribution theory in consumer behavior. Proposition put forward is to understand consumer perceptions and causal relationships that are the center of consumer behavior, which then marketers will be able to use it as a basis for marketing activities. Folkes explained that the products or services purchased by consumers for the causal relationship. As an illustration is when consumers buy deodorant that is believed to improve their social life, athletic shoes can improve achievement, medications to relieve pain, etc.. By reviewing the literature on attribution theory, Folkes wanted to show that attribution theory is very rich and well-developed approach deals with the issues in consumer behavior. Existing studies explain the relationship between consumer behavior and attitudes. For example, research indicates when consumers attribution will recommend products to other customers, and when they make complaints against the disappointments that occur. Attribution theory itself is actually a few theories that have the same basic assumptions. According to attribution theory, people will find what causes events (Heider, 1958; Kelley, 1967). When company is associated with extra effort, then according to attribution theory, consumers will appreciate that extra effort even if it is only a general one. The results from Morales (2005) -which serves as a guide in this study - also supports the attribution theory, noting that consumers appreciate the extra effort done by the company even though the efforts are in general and not to aim the consumers directly or personally. Kruger, Wirtz & Altermatt (2004) shows that company‟s efforts is often used by consumers to understand the quality of products or services provided. The higher the company's efforts, the higher the perceived quality gets. In line with Morales (2005), though in fact there is no increase in quality, but if the company keeps giving extra efforts, then it will make consumers perceive better on its product or services.