Using discrete choice experiments to estimate willingness-to-pay intervals

Willingness-to-pay has always been conceptualized as a point estimate, frequently as the price that makes the consumer indifferent between buying and not buying the product. In contrast, this article estimates willingness-to-pay (WTP) as an interval based on discrete choice experiments and a scale-adjusted latent-class model. The middle value of this interval corresponds to the traditional WTP point estimate and depends on the deterministic utility; the range of the interval depends on price sensitivity and the utility??s error variance (scale). With this conceptualization of WTP, we propose a new measure, the attractiveness index, which serves to identify attractive consumers by combining knowledge about their price sensitivities and error variances. An empirical study demonstrates that the attractiveness index identifies the most attractive consumers, who do not necessarily have the largest WTP point estimates. Furthermore, consumers with comparable preferences can differ in their purchase probability by an average of 16%, as reflected in differences in their WTP intervals, which yields implications for more customized target marketing.     

How Dispersive Opinions Affect Consumer Decisions: Endowment Effect Guides Attributional Inferences

Electronic word-of-mouth (eWOM) dispersion, reflecting the extent of reviewers’ opinion divergence regarding a product, determines consumer decisions. Drawing upon the endowment effect and attribution literature, this research proposes that the endowment effect mediates the influence of eWOM dispersion on attributional inferences, and the display formats of eWOM dispersion (“horizontal bar chart” vs. “eWOM content”) moderate the mediating influence of endowment effect on attributional inferences of eWOM dispersion. Three complementary studies reveal three key insights in this setting. First, when consumers already having an emotional attachment to a product and subsequently encountering dispersive eWOM, the higher the level of eWOM dispersion, the stronger the endowment effect. Secondly, In such circumstance, the stronger endowment effect promotes more reviewer-related attribution inference of high-dispersion eWOM, and the weaker endowment effect promotes more product-related attribution inference of low-dispersion eWOM. Third, the positive influence of eWOM dispersion on endowment effect is stronger for eWOM dispersion in the complexity or disfluency display format (i.e. “reviewers’ impression of product”) than for eWOM dispersion in the simply of fluency display format (i.e. “horizontal bar chart”), more importantly, the mediating influence of endowment effect on attributional inferences is moderated by the display formats of eWOM dispersion, and this findings persists even when product category (hedonic vs. utilitarian) is taken into consideration. The theoretical implications for the eWOM dispersion and attribution literature and practical implications for online retailers are discussed.     

Empirical Testing of the Reference-Price Effect of Buy-Now Prices in Internet Auctions

Retailers selling items through Internet auctions frequently use buy-now prices (BNPs), which allow the immediate selling of an item to consumers at a fixed price. Previous research has proposed several theories of the usage of BNPs by bidders. We study the usage of BNPs from a seller's point of view. We propose that a retailer may use BNPs as external reference prices, influencing bidders’ valuations in Internet auctions. We focus on the effect of BNPs on bidders’ willingness to pay (WTP) and study under what conditions a BNP can be effectively used as an external reference price. Results of two empirical studies clearly indicate that BNPs have a reference-price effect. In addition, we find that this effect is moderated by (1) the difficulty of value assessment and (2) product value.     

Appliance Warranties as a Market Signal?

Appliance warranties can be considered to provide a market signal of appliance reliability. However, the cost to consumers of obtaining enough information to interpret the signal causes the dispersion of warranty provisions to be limited. The more complicated the laws surrounding warranties, the greater the cost to consumers of warranty information. This makes warranties less effective as a market signal and reduces the variation in warranty provisions. Upon examination, appliance warranties for refrigerators, air conditioners, ranges, clothes washing machines, and television sets were found, consistent with this view, to vary relatively little.     

The Impact of Stress on Consumers' Willingness to Pay

Stress is a companion in most consumers’ lives and as such should impact purchase behavior in many ways. Drawing on construal‐level theory, which relates to information processing on different levels of abstraction, the authors propose that consumers’ stress deteriorates their evaluation of products. The latter effect results from a stress‐induced focus shift, from product characteristics with high levels of construal to those with low levels of construal (Study 1). This shift also decreases the price that consumers are willing to pay (Study 2), though the product category moderates the impact of stress on willingness to pay (WTP), such that the decline in consumers’ WTP is smaller for products characterized by lower levels of construal (Study 3). This research extends existing knowledge on the impact of relaxation on consumers’ WTP by including stress in the analysis. Effect sizes are similar to those in related studies. In terms of managerial implications, this study recommends decreasing consumers’ stress levels at the point of purchase and tailoring marketing mix activities to match prevalent stress levels, if firms hope to mitigate the negative effect of stress.     

On The Reference Point Effect of Reserve and Buy It Now Prices

In recent years, a trend in retail pricing has been to give consumers greater autonomy in setting their own prices, be it through auctions or other forms of participative pricing. Such consumer pricing autonomy often requires the seller to set limits in the form of price floors and price ceilings. Price floors and ceilings in our auction settings are referred to as reserve prices (RP) and Buy It Now (BIN) prices, respectively. We examine the effect of RP and BIN presence and magnitude on the number of bidders and ending price. Using auctions, we uncover consumers’ willingness to pay (WTP) through bids. WTP is malleable through reference cues. Our focus is on two such cues: BINs and RPs. Results of two field studies, augmented with a laboratory study, show that both BINs and RPs result in lower bidder entry, but have an overall positive effect on ending price. Furthermore, results show that RP is more effective than a comparable BIN magnitude and that these two pricing cues are substitutes. The study design allows the authors to rule out alternative explanations. Open RP and BIN's effect on ending price is due to a reference point effect rather than a price truncation effect. Thus, retailers can increase WTP through changing these reference cues and exploit a richer choice set over which to shape a malleable WTP. The quantification of the interaction between RP and BIN gives managers the ability to jointly take advantage of both RP and BIN.     

Brand effect on extended warranty valuation: Subjective value versus popularity

In five experiments, we explore the effect of brands on warranty valuation and the conditions under which two mechanisms – liking based and availability based – determine the effect. We explore the moderating role of focused deliberation, which accentuates the brand effect under availability mechanism but reduces the effect under subjective value-based mechanism. In Experiment 1, we consider brands that vary in terms of both subjective value and popularity. When a brand is better in both subjective value and popularity, it commands higher warranty WTP. Focused deliberation moderates this effect of brand on warranty valuation. In Experiment 2, we consider brands that vary only in terms of subjective values (but not popularity). While the warranty valuation of the two brands does not differ under no deliberation, deliberation decreases WTP for brands with higher subjective value. In Experiment 3, we consider brands that differ only in terms of popularity (and not subjective value). In this context, deliberation increases warranty WTP for the more popular brand. Experiments 2A and 3A use warranty choice as the dependent variable and conceptually replicate the effects obtained in experiments 2 and 3, respectively.     

A train of thought in product experientiality: Working memory,distraction, and inconsistencies in cue order effects

The sequence of informational cues and the level of distraction have an impact on the judgment of a product’s quality and preference. Two quasi-experimental studies (N_total = 340) investigate the influence of the force behind the processing of these cues – working memory (WM). Previous research found that, in the presence of a distractor, high WM individuals are more able to recall the initial cue, and thus derive their product judgment from the initial strong cue. Study 1 contradicts these findings and raises important methodological questions regarding the conceptualization of strong and weak cues. Specifically, commonly accepted strong cues (e.g., product reputation) might not influence consumers as expected. Additionally, in a sequence of product evaluation with high vs. low degree of experientiality, study 2 reveals that consumers tend to show a primacy effect that is stronger for higher levels of WM capacity. Moreover, in a sequence of assessing low vs. high degree of experientiality products, consumers reveal stronger recency effects, thus showing that WM reinforces this recency effect. Our findings have important implications for marketers by suggesting that consumers with high WMC are more able to process complex stimuli and retrieve previously presented information on a product quality. These consumers also have a higher tendency to retrieve more information from product scenarios with a high degree of experientiality.     

Playing the role of buyer and seller: The mental accounting of trade-ins

This paper examines the role of trade-ins in consumers' purchases of new durable goods. We argue that even if the net price paid by consumers who trade in an old product remains the same, varying the offer on the trade-in substantially affects consumers' satisfaction with the transaction. In particular, because the product is a part of their endowment, consumers' valuation of their used product can be more than the market's valuation. While the endowment effect is a well-documented phenomenon, its implications for trade-ins have yet to be studied. We use the notion of mental accounting and endowment effects to develop a model of trade-ins. We show that even if two deals are financially equivalent, the preferred option for consumers is often the one in which the consumer is overpaid on the trade-in. In addition, we find that consumers who are overpaid (relative to a market price) on their trade-in are willing to pay a higher net price than are consumers who are underpaid on their trade-in.     

Warranty as a Signal of Quality: The Moderating Effect of Consumer Knowledge on Quality Evaluations

Prior research has shown that consumers use warranties as a signal of quality. This article explores whether prior knowledge moderates consumers' utilization of warranty information in evaluating product quality. In particular, we examine how prior knowledge impacts the relative use of warranty information when consumers are already aware of firm reputation. Indeed, we find that the extent to which warranty information is used in quality evaluations varies with prior knowledge. We report the results of two experiments, which somewhat surprisingly suggest that, for experts, a better warranty leads to perceptions of higher quality, regardless of firm reputation. Novices on the other hand, tend to perceive a better warranty as a signal of higher quality only when the firm is reputable but not when its reputation is low.     

Willingness-to-Pay for Multiple Units of Eco-Friendly Wheat-Derived Products: Results From Open-Ended Choice Experiments

A non-hypothetical open-ended choice experiment with a multi-unit elicitation format was conducted to elicit Italian consumer willingness-to-pay (WTP) and demand schedule for new wheat-derived products that were produced by adopting an ecologically friendly post-harvest technique (high heat-treated, HHT). A sample of 270 Italian consumers were surveyed in Bologna, Catania, and Palermo in June 2014. Data were analyzed using a double hurdle model. Results suggest Italian consumers are willing to pay premium prices for HHT flour, while they prefer to pay for HHT packed bread at the same price as a conventional one. Consumers’ WTP for the second, third, and more units are lower than their WTP for the first unit of product. While factors that influence consumers’ decision to buy these two new products are the same, factors that affect their desired product units differ among each products. In conclusion, Italian consumers’ preference for an eco-friendly label depends on the types of products.     

Malleability of taste perception: biasing effects of rating scale format on taste recognition,product evaluation,and willingness to pay

Product-related cues, such as brand or price, can influence consumers’ taste perception. Going beyond this observation, we examine the extent to which a stimulus-extrinsic factor, such as the format of the measurement tool on which consumers describe attributes of a taste sample, influences concurrent taste perception, and in turn, later taste recognition, overall product evaluation, and willingness to pay (WTP). The results of two experiments show that rating scale format (i) influences consumers’ concurrent impression of a taste sample, (ii) systematically biases later identification of the sample in a taste recognition test, and (iii) affects overall product evaluation and WTP. However, scale format (iv) does not influence ratings and downstream judgments when consumers are highly knowledgeable in the product domain. These findings demonstrate that the experience of taste is fleeting and not well represented in memory, and that like other subjective experiences, taste needs to be reconstructed based on accessible cues.     

A de-biased direct question approach to measuring consumers' willingness to pay

Knowledge of consumers' willingness to pay (WTP) is a prerequisite to profitable price-setting. To gauge consumers' WTP, practitioners often rely on a direct single question approach in which consumers are asked to explicitly state their WTP for a product. Despite its popularity among practitioners, this approach has been found to suffer from hypothetical bias. In this paper, we propose a rigorous method that improves the accuracy of the direct single question approach. Specifically, we systematically assess the hypothetical biases associated with the direct single question approach and explore ways to de-bias it. Our results show that by using the de-biasing procedures we propose, we can generate a de-biased direct single question approach that is accurate enough to be useful for managerial decision-making. We validate this approach with two studies in this paper.     

Consumer perceptions of extended warranties

The vast majority of US consumers purchase extended warranties when buying appliances and home electronics. Retailers promote extended warranties since they have high profit margins. Consumers buy extended warranties because they seek “peace of mind and freedom from financial outlays if their purchase needs repairs”. This study examines consumers’ perceptions of the terms of an extended warranty, specifically the length of the warranty contract using a mall-intercept method to identify 101 consumers who have purchased an appliance or home electronics product in the past 2 years. The study finds that a large majority of consumers misconstrue the retailer's “4-year” extended warranty as providing four additional years of coverage beyond the manufacturer's warranty when, in fact, the “4-year” extended warranty includes the manufacturer's warranty and is, therefore, only providing 3 years of “extended” warranty protection. Marketing implications are discussed.     

An exploratory study of environmental attitudes and the willingness to pay for environmental certification in Mexico

This paper explores how environmental attitudes of consumers in Mexico influence their willingness to pay a premium (or, marginal WTP) for environmentally-certified products. In addition, we also challenge the theoretical assumption that the relationship between environmental attitudes and purchasing is linear. We test our hypotheses with an analysis of marginal WTP based on a survey of 301 Mexican consumers. Using conjoint analysis to determine marginal WTP, we find support for the idea that as attitudes become more pro-environmental, they more than proportionally boost marginal WTP. We conclude our paper by discussing implications for research and practice that focus on environmental segments of consumers.     

Promises,Promises: How Consumers Respond to Warranties in Internet Retailing

Past studies have shown that perceived risk is a critical determinant of purchase intention in non–store retailing contexts, including Internet retailing. Extant literature in physical retailing suggests that warranties can be a significant variable in reducing consumers’ perceived risk. We examine the role of Web site warranties in risk reduction and how warranty information interacts with retailer reputation and brand name as two other risk relievers in an online shopping environment. Results suggest that warranties can make a positive difference for online retailers with strong reputations with respect to perceived risk, perceived product quality, and purchase intentions. However, consumers are less influenced by warranty information when dealing with online retailers with weak reputations. For the other extrinsic cue, however, we find that warranty information does not have an effect when dealing with brand names, suggesting that a brand name’s impact on online risk reduction remains regardless of the presence of warranty information.     

Green intentions under the blue flag: Exploring differences in EU consumers’ willingness to pay more for environmentally‐friendly products

Recent research on consumer social responsibility highlights the need to examine psychological drivers of environmentally‐friendly consumption choices in a global context. This article investigates consumers’ willingness to pay (WTP) more for environmentally‐friendly products across 28 European Union (EU) countries, using a sample of 21,514 consumers. A multigroup structural equation modeling analysis reveals significantly different patterns and relationships, in how (a) subjective knowledge about the product's environmental impact, (b) environmental product attitudes, and (c) the perceived importance of the products’ environmental impact influence consumers’ WTP more for environmentally‐friendly products across countries. The hypothesized model predicts WTP for 20 out of 28 countries and the findings show that a “one‐size‐fits‐all” approach is inadequate in capturing the heterogeneity of EU consumers. Hosfstede's cultural dimensions of uncertainty tolerance and individualism explain differences in WTP for environmentally‐friendly products across EU countries. Business, marketing communications, and policy making implications are discussed.     

The effect of credit card versus mobile payment on convenience and consumers’ willingness to pay

Extant literature on payment methods has focused on comparing cash and credit cards and emphasized the lower pain of paying (i.e., fewer negative consequences) for the latter. This finding, in turn, explains why consumers express higher willingness to pay (WTP) when paying with credit cards. The current study introduces mobile technology as a new payment method to this literature. Specifically, it highlights convenience as a positive driver of increased WTP for mobile payment. However, for consumers to perceive mobile payment as convenient, a personal adoption (enabled through an existing system in the respective country market) is necessary. A set of three studies across several country markets tests these assumptions empirically. Convenience emerges as a new mediator between mobile payment and increased WTP, contingent on personal adoption. These findings thus extend extant literature on the mechanisms consumers use with different payment methods, and they offer differentiated recommendations regarding payment channels for country managers.     

The effects of product knowledge on the evaluation of warranteed brands

This study explores the effects of consumer knowledge on respondents' evaluations of both known and unknown brands that include either a 2-year or a 20-year warranty. Both experts and nonexperts evaluated warranty as more important than brand name in their product quality decision. Warranty length was positively correlated with product quality perceptions for both known and unknown brands. With the unknown brand, nonexperts perceived significant improvement in product quality when the warranty length was increased from 2 to 20 years. For the known brand, nonexperts perceived little difference in quality for the two warranty lengths. Experts indicated no significant differences in perceived quality, given the four brand/warranty-length conditions. The results indicate that warranty length is most heavily weighted as a cue to product quality when consumers are not highly knowledgeable, and the brand name is not well known. © 1996 John Wiley & Sons, Inc.     

Context Effects on Older Consumers’ Cognitive Age: The Role of Hedonic versus Utilitarian Goals

This paper deals with older consumers’ cognitive age (i.e., the age they feel), which is self‐assessed as systematically lower than their chronological age (i.e., their actual age). Such a tendency would lead older consumers to display attitudes and purchasing behaviors, which are not typical of people of their real age. Two studies show that cognitive age is not an immutable construct but varies according to its context of reference, so that the same individual may feel different ages under different circumstances. Results demonstrate that the declared cognitive age is affected by the physical environment, the social references, and the product categories that the consumer is using when self‐assessing it. Furthermore, the tendency of older consumers to feel younger is stronger when these consumers are pursuing in these contexts hedonic rather than utilitarian goals. These findings provide novel inputs for the development of appropriate ways to measure cognitive age and to deal with it when targeting senior consumers and positioning hedonic versus utilitarian goods.