Haipeng Allan Chen

Holiday Price Rigidity and Cost of Price Adjustment

The Thanksgiving-Christmas holiday period is a major sales period for US retailers. Due to higher store traffic, tasks such as restocking shelves, handling customers’ questions and inquiries, running cash registers, cleaning, and bagging, become more urgent during holidays. As a result, the holiday-period opportunity cost of price adjustment may increase dramatically for retail stores, which should lead to greater price rigidity during holidays. We test this prediction using weekly retail scanner price data from a major Midwestern supermarket chain. We find that indeed, prices are more rigid during holiday periods than non-holiday periods. For example, the econometric model we estimate suggests that the probability of a price change is lower during holiday periods, even after accounting for cost changes. Moreover, we find that the probability of a price change increases with the size of the cost change, during both, the holiday as well as non-holiday periods. We argue that these findings are best explained by higher price adjustment costs (menu cost) the retailers face during the holiday periods. Our data provides a natural experiment for studying variation in price rigidity because most aspects of market environment such as market structure, industry concentration, the nature of long-term relationships, contractual arrangements, etc., do not vary between holiday and nonholiday periods. We, therefore, are able to rule out these commonly used alternative explanations for the price rigidity, and conclude that the menu cost theory offers the best explanation for the holiday period price rigidity.

When More Is Less: The Impact of Base Value Neglect on Consumer Preferences for Bonus Packs over Price Discounts.

The interpretation of a percentage change often hinges on the base value to which it is attached. The authors identify a tendency among consumers to neglect base values when processing percentage change information and investigate the implications of such base value neglect for how consumers evaluate economically equivalent offers presented in percentage terms, such as bonus packs and price discounts. The authors first document a substantial advantage in sales volume for a bonus pack over an economically equivalent price discount in a field experiment conducted in a retail store. Furthermore, in a mall-intercept survey and multiple lab studies, the authors provide additional evidence in support of the effect and identify managerially useful boundary conditions for when the effect is likely to manifest. The article concludes with a discussion of the theoretical and managerial implications of the findings.

Price Points And Price Rigidity

We study the link between price points and price rigidity using two data sets: weekly scanner data and Internet data. We find that “9” is the most frequent ending for the penny, dime, dollar, and ten-dollar digits; the most common price changes are those that keep the price endings at “9”; 9-ending prices are less likely to change than non-9-ending prices; and the average size of price change is larger for 9-ending than non-9-ending prices. We conclude that 9-ending contributes to price rigidity from penny to dollar digits and across a wide range of product categories, retail formats, and retailers.

Could Ralph Nader's Entrance and Exit Have Helped Al Gore? The Impact of Decoy Dynamics on Consumer Choice

People are frequently faced with making a new choice decision after a preferred option becomes unavailable. Prior research on the attraction effect has demonstrated how the introduction of an option into a choice set increases the share of one of the original options. The authors examine the related but previously unaddressed issue of whether the unexpected exit of an option from a choice set returns the choice shares of the original options to the status quo. In a series of experiments, they observe that when an option turns out to be unselectable following a choice problem in which it was selectable, the choice shares of the remaining options are predictably different from those of a choice problem in which the option was unselectable from the start. They also observe that this attraction effect due to the disappearance of a decoy is likely a consequence of changes in the importance of decision criteria. They conclude with a discussion of the theoretical and managerial implications of the research.

Price points and price rigidity

We study the link between price points and price rigidity, using two datasets containing over 100 million observations. We find that (i) 9 is the most frequently used price-ending for the penny, dime, dollar and ten-dollar digits, (ii) 9-ending prices are between 24%-73% less likely to change in comparison to non-9-ending prices, (iii) the average size of the price change is higher if it ends with 9 in comparison to non-9-ending prices, and (iv) the most common price changes are multiples of dimes, dollars, and ten-dollars. We conclude that price points might constitute a substantial source of retail price rigidity.