Quentin André, Nicholas S. Reinholtz · Journal of Consumer Research · 2024
We show that group sequential designs (which allow to perform interim analyses while data collection is ongoing) can unlock numerous benefits for researchers engaged in confirmatory hypothesis testing: They facilitate sample size decisions, allow researchers to achieve a desired level of statistical power with a smaller number of observations, and help conduct more efficient pilot studies. We validate this cost-saving potential through a comprehensive re-analysis of 212 studies published in the Journal of Consumer Research, which shows that using these designs would have reduced costs by 20% to 29%. We conclude with a discussion of limitations and possible alternatives.
Gabriele Paolacci, Quentin André · Management Science · 2023
Would people report a different valuation for a 50 dollars Amazon gift card that is certain to be available, and for the same gift card that has a 10% chance of being available? In violation of expected utility theory, we show that people anticipate less utility from uncertain outcomes than from certain outcomes, even conditional on their realization. We show that it isn't driven by beliefs about the quality the good (we always use gift cards, which are of unambiguous quality), by a misunderstanding of the instructions, or by differences in “weirdness“ (Mislavsky and Simonsohn 2018) between the transactions.
Quentin André · Journal of Experimental Psychology: General · 2021
How should researchers exclude outliers: Across the data, or within conditions? In this paper, I show that when outlier exclusions are performed in a way that is not 'blind' to the researchers' hypothesis (e.g., within conditions), they increase Type I error to unacceptable levels.
Quentin André, Nicholas S. Reinholtz, Bart de Langhe · Journal of Consumer Research · 2021
Should I search for a cheaper flight? How much should I bid for the house? To answer those questions, consumers form beliefs about the dispersion of flight prices or house bids… but how accurate are those beliefs? We provide evidence for a phenomenon we call dispersion spillover: Seeing more (vs. less) dispersed prices in one category leads people to perceive more price dispersion in another category. This dispersion spillover influences consumers’ judgments of price attractiveness and changes their likelihood to search for (and find) better options.
Quentin André, Bart de Langhe · Journal of Experimental Psychology: General · 2020
Can loss aversion disappear and reverse? In this article, we show that the shifts in loss aversion reported in Walasek and Stewart (2015) are driven by an invalid experimental paradigm. After correcting this error, we do not see evidence that loss aversion is shaped by the distribution of gains and losses that people have encountered.
Quentin André, Pierre Chandon, Kelly L. Haws · Journal of Public Policy & Marketing · 2019
Consumers intuitively categorize front-of-packaging claims displayed on food into 4 broad categories: (1) Claims about “removing negatives,” (2) claims about “adding positives,” (3) claims about “not adding negatives,” and (4) claims about “not removing positives.” Each type of claim is associated with different beliefs about the healthiness, tastiness, and dieting properties of the food.
Quentin André, Ziv Carmon, Klaus Wertenbroch, Alia Crum, Douglas Frank, William Goldstein, Joe Huber, Leaf van Boven, Bernd Weber, Haiyang Yang · Customer Needs and Solution · 2017
In this summary of a Choice Symposium session, we explore the opportunities and challenges that the development of automation and artificial intelligence pose to consumers. They can, on the one hand, contribute to consumer well-being by making choices easier, more practical, and more efficient. On the other hand, they can also undermine consumers' sense of autonomy, the absence of which is detrimental to well-being. Drawing from diverse perspective, we explore the relevance and importance of autonomy to consumers, and identify open research questions in this domain.