Cardiorespiratory fitness and depression symptoms among adults during the COVID-19 Pandemic: Cooper Center Longitudinal Study.

This study examined the relation between cardiorespiratory fitness (fitness) and depression symptoms prior to and during COVID-19 among adults seeking preventive medical care. Participants consisted of 967 patients attending the Cooper Clinic (Dallas, TX) pre-pandemic (March 2018-December 2019) and during the pandemic (March-December 2020). The outcome, depression symptoms, was based on the Center for Epidemiological Studies-Depression (CES-D).

Increased generosity under COVID-19 threat.

In the face of crises-wars, pandemics, and natural disasters-both increased selfishness and increased generosity may emerge. In this paper, we study the relationship between the presence of COVID-19 threat and generosity using a four-year longitudinal dataset (N = 696,942) capturing real donations made before and during the pandemic, as well as allocations from a 6-month dictator game study (N = 1003 participants) during the early months of the pandemic. Consistent with the notion of "catastrophe compassion" and contrary to some prior research showing a tendency toward self-interested behavior under threat, individuals across both datasets exhibited greater financial generosity when their county experienced COVID-19 threat.

The effect of deadlines on cancer screening completion: a randomized controlled trial.

Cancer is the second leading cause of death in the United States. Although screening facilitates prevention and early detection and is one of the most effective approaches to reducing cancer mortality, participation is low-particularly among underserved populations. In a large, preregistered field experiment (n = 7711), we tested whether deadlines-both with and without monetary incentives tied to them-increase colorectal cancer (CRC) screening.

COVID-19 and vaccine hesitancy: A longitudinal study.

How do attitudes toward vaccination change over the course of a public health crisis? We report results from a longitudinal survey of United States residents during six months (March 16 -August 16, 2020) of the COVID-19 pandemic. Contrary to past research suggesting that the increased salience of a disease threat should improve attitudes toward vaccines, we observed a decrease in intentions of getting a COVID-19 vaccine when one becomes available. We further found a decline in general vaccine attitudes and intentions of getting the influenza vaccine.

The impact of agency on time and risk preferences.

Scholars have long argued for the central role of agency-the size of one's choice set-in the human experience. We demonstrate the importance of agency in shaping people's preferences. We first examine the effects of resource scarcity-which has been associated with both impatience and a lack of agency-on patience and risk tolerance, successfully replicating the decrease in patience among those exposed to scarcity.

Financial Incentives to Promote Colorectal Cancer Screening: A Longitudinal Randomized Control Trial.

Background: Financial incentives may improve health behaviors. We tested the impact of offering financial incentives for mailed fecal immunochemical test (FIT) completion annually for 3 years.

Methods: Patients, ages 50 to 64 years, not up-to-date with screening were randomized to receive either a mailed FIT outreach ( = 6,565), outreach plus $5 ( = 1,000), or $10 ( = 1,000) incentive for completion.

Financial Incentives for Promoting Colorectal Cancer Screening: A Randomized, Comparative Effectiveness Trial.

Objectives: Offering financial incentives to promote or "nudge" participation in cancer screening programs, particularly among vulnerable populations who traditionally have lower rates of screening, has been suggested as a strategy to enhance screening uptake. However, effectiveness of such practices has not been established. Our aim was to determine whether offering small financial incentives would increase colorectal cancer (CRC) screening completion in a low-income, uninsured population.

The Effect of Background Music in Shark Documentaries on Viewers' Perceptions of Sharks.

Despite the ongoing need for shark conservation and management, prevailing negative sentiments marginalize these animals and legitimize permissive exploitation. These negative attitudes arise from an instinctive, yet exaggerated fear, which is validated and reinforced by disproportionate and sensationalistic news coverage of shark 'attacks' and by highlighting shark-on-human violence in popular movies and documentaries. In this study, we investigate another subtler, yet powerful factor that contributes to this fear: the ominous background music that often accompanies shark footage in documentaries.

Behavioral economics. Avoiding overhead aversion in charity.

Donors tend to avoid charities that dedicate a high percentage of expenses to administrative and fundraising costs, limiting the ability of nonprofits to be effective. We propose a solution to this problem: Use donations from major philanthropists to cover overhead expenses and offer potential donors an overhead-free donation opportunity. A laboratory experiment testing this solution confirms that donations decrease when overhead increases, but only when donors pay for overhead themselves.

Paying more when paying for others.

Social behavior is heavily influenced by the perception of the behaviors of others. We considered how perceptions (and misperceptions) of kindness can increase generosity in economic transactions. We investigated how these perceptions can alter behavior in a novel real-life situation that pitted kindness against selfishness.

Pay-what-you-want, identity, and self-signaling in markets.

We investigate the role of identity and self-image consideration under "pay-what-you-want" pricing. Results from three field experiments show that often, when granted the opportunity to name the price of a product, fewer consumers choose to buy it than when the price is fixed and low. We show that this opt-out behavior is driven largely by individuals' identity and self-image concerns; individuals feel bad when they pay less than the "appropriate" price, causing them to pass on the opportunity to purchase the product altogether.

Conflict, sticks and carrots: war increases prosocial punishments and rewards.

Unlike most species, humans cooperate extensively with group members who are not closely related to them, a pattern sustained in part by punishing non-cooperators and rewarding cooperators. Because internally cooperative groups prevail over less cooperative rival groups, it is thought that violent intergroup conflict played a key role in the evolution of human cooperation. Consequently, it is plausible that propensities to punish and reward will be elevated during intergroup conflict.

Shared social responsibility: a field experiment in pay-what-you-want pricing and charitable giving.

A field experiment (N = 113,047 participants) manipulated two factors in the sale of souvenir photos. First, some customers saw a traditional fixed price, whereas others could pay what they wanted (including $0). Second, approximately half of the customers saw a variation in which half of the revenue went to charity.