Converging to the Lowest Common Denominator in Physical Health

Leslie K. John; Michael I. Norton

Article | Health Psychology | September 2013

Converging to the Lowest Common Denominator in Physical Health

Abstract

Objective: This research examines how access to information on peer health behaviors affects one's own health behavior. Methods: We report the results of a randomized field experiment in a large corporation in which we introduced walkstations (treadmills attached to desks that enable employees to walk while working), provided employees with feedback on their own and their co-workers' usage, and assessed usage over six months. We report how we determined our sample size, as well as all data exclusions, manipulations, and measures in the study. Results: Walkstation usage declined most when participants were given information on co-workers' usage levels, due to a tendency to converge to the lowest common denominator—their least-active co-workers. Conclusion: This research demonstrates the impact of the lowest common denominator in physical activity: people's activity levels tend to converge to the lowest-performing members of their groups. This research adds to our understanding of the factors that determine when the behavior of others impacts our own behavior for the better—and the worse.

Keywords: Information; Behavior; Decision Choices and Conditions; Health; Health Industry;

Format: Print

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Citation:

John, Leslie K., and Michael I. Norton. "Converging to the Lowest Common Denominator in Physical Health." Special Issue on Health Psychology Meets Behavioral Economics. Health Psychology 32, no. 9 (September 2013): 1023–1028.

The 2010 Patient Protection and Affordable Care Act intensified debates over the role of government in the distribution of healthcare. A nationally-representative sample of Americans reported their estimated and ideal distributions of healthcare (unmet need for prescription medications) and death (gains in life expectancy). Respondents across the demographic and political spectrum wanted mortality and healthcare to be distributed more evenly among the rich and poor than they estimated them to be. For example, respondents estimated that Americans in the poorest quintile lived 1.5 months longer over the previous 20 years while those in the richest quintile lived 4.7 months longer, but reported ideal figures of 2.5 and 3.6 months – both were far more equal than the actual figures: -1.8 and 7.2 months. Despite heated debates about healthcare, Americans share a consensus belief that current disparities in death and healthcare are far from their ideals.

How do the very wealthy spend their time, and how does time use relate to well-being? In two studies in the Netherlands, the affluent (N=863, N=690) and the general population (N=1232, N=306) spent time in surprisingly similar ways, such as by spending the same amount of time working. Yet, the nature of their time-use differed in critical ways that are related to life satisfaction. In Study 1, millionaires spent more time engaged in active leisure (e.g., exercising and volunteering) rather than passive leisure (e.g., watching television and relaxing). In Study 2, millionaires spent more time engaged in tasks at work over which they had more control. The affluent sample belongs to the top of the income and wealth distribution, representing a significantly wealthier sample than in previous studies. These results further our understanding of when and how wealth may translate into greater well-being.

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In August 2017, Commonwealth Bank of Australia was looking for ways to differentiate itself from competing banks and was also trying to improve the financial well-being of its customers. One domain where this was particularly relevant was in its bank-issued credit card business, where customers routinely selected cards that although profitable for the bank could be a poor fit for customers’ needs—leading to low satisfaction scores, cancellations, and occasionally, financial distress. To that end, the company’s Behavioral Economics team had developed a provocative experiment dubbed “The Good and the Bad.” Rather than just presenting the strengths of its various credit card offerings, they proposed also promoting each credit card’s less-obvious drawbacks. Being transparent with customers might help them make better choices, but would those choices come at the expense of bank performance? Should a company choose to be in the sales prevention business?

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Converging to the Lowest Common Denominator in Physical Health

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