Let’s Get Serious: Communicating Commitment in Romantic Relationships

Are men or women more likely to confess love first in romantic relationships? And how do men and women feel when their partners say “I love you”? An evolutionary–economics perspective contends that women and men incur different potential costs and gain different potential benefits from confessing love. Across 6 studies testing current and former romantic relationships, we found that although people think that women are the first to confess love and feel happier when they receive such confessions, it is actually men who confess love first and feel happier when receiving confessions. Consistent with predictions from our model, additional studies have shown that men's and women's reactions to love confessions differ in important ways depending on whether the couple has engaged in sexual activity. These studies have demonstrated that saying and hearing “I love you” has different meanings depending on who is doing the confessing and when the confession is being made. Beyond romantic relationships, an evolutionary–economics perspective suggests that displays of commitment in other types of relationships—and reactions to these displays—will be influenced by specific, functional biases

What Are Social Incentives Worth? A Randomized Field Experiment in User Content Generation

Content generation is a critical aspect of user engagement in online communities, yet many platforms face a problem of under-provision. We focus here on the potential of different types of incentives (social and monetary) for stimulating the production of online reviews. Partnering with a Chinese online clothing retailer, we conduct a large-scale randomized field experiment, in which we consider the independent and joint effects of monetary payment and descriptive social norms on the quantity and quality of reviews. We find that money attracts a greater volume of reviews, descriptive social norms attract greater quality, and combining the two yields the greatest benefit in both respects. We discuss the implications of our results for theory and practice, and highlight opportunities for future work in this area

Blatant benevolence and conspicuous consumption: When romantic motives elicit strategic costly signals

Conspicuous displays of consumption and benevolence might serve as “costly signals ” of desirable mate qualities. If so, they should vary strategically with manipulations of mating-related motives. The authors examined this possibility in 4 experiments. Inducing mating goals in men increased their willingness to spend on conspicuous luxuries but not on basic necessities. In women, mating goals boosted public—but not private—helping. Although mating motivation did not generally inspire helping in men, it did induce more helpfulness in contexts in which they could display heroism or dominance. Conversely, although mating motivation did not lead women to conspicuously consume, it did lead women to spend more publicly on helpful causes. Overall, romantic motives seem to produce highly strategic and sex-specific self-presentations best understood within a costly signaling framework. Key words: costly signaling, altruism, conspicuous consumption, mating goals, self-presentation We should often blush at our noblest deeds if the world were to see all their underlying motives.—Francois de La Rochefoucauld On Valentine’s Day 2003, America’s leading authority on phi-lanthropy announced that real estate mogul Donald Trump had pledged $1 million to charity (Foundation Center, 2003). A fe

Out of control mortality matters: the effect of perceived uncontrollable mortality risk on a health-related decision

Prior evidence from the public health literature suggests that both control beliefs and perceived threats to life are important for health behaviour. Our previously presented theoretical model generated the more specific hypothesis that uncontrollable, but not controllable, personal mortality risk should alter the payoff from investment in health protection behaviours. We carried out three experiments to test whether altering the perceived controllability of mortality risk would affect a health-related decision. Experiment 1 demonstrated that a mortality prime could be used to alter a health-related decision: the choice between a healthier food reward (fruit) and an unhealthy alternative (chocolate). Experiment 2 demonstrated that it is the controllability of the mortality risk being primed that generates the effect, rather than mortality risk per se. Experiment 3 showed that the effect could be seen in a surreptitious experiment that was not explicitly health related. Our results suggest that perceptions about the controllability of mortality risk may be an important factor in people’s health-related decisions. Thus, techniques for adjusting perceptions about mortality risk could be important tools for use in health interventions. More importantly, tackling those sources of mortality that people perceive to be uncontrollable could have a dual purpose: making neighbourhoods and workplaces safer would have the primary benefit of reducing uncontrollable mortality risk, which could lead to a secondary benefit from improved health behaviours

Buildings behaving badly:A behavioral experiment on how different motivational frames influence residential energy label adoption in the Netherlands

Heating buildings contributes to approximately 36% of Europe’s energy demand and several EU member states have adopted mandatory energy labels to improve energy efficiency by promoting home weatherization investments. This paper focuses on the perception of the energy label for residential buildings in the Netherlands and the role of different frames (egoistic, biospheric and social norms and neutral frames) in motivating adoption of energy labels for housing. We used a behavioral email experiment and an online survey to investigate these motivational factors. We find that biospheric frames are weaker than the other three motivational frames in terms of engaging interest in the energy label, but that the biospheric frame results in higher willingness to pay (WTP) for the energy label. We also find that age (rather than income) correlates with higher willingness to pay for home energy labels

Limitations of Global Norms on Global Conservation: Using Provincial Norms to Motivate Pro-Environmental Behavior

Two field experiments examined the effectiveness of signs requesting hotel guests' participation in an environmental conservation program. Appeals employing descriptive norms (e.g., "the majority of guests reuse their towels") proved superior to a widely used traditional appeal that focused solely on environmental protection. Moreover, normative appeals were most effective when describing group behavior that occurred in the setting that most closely matched consumers' immediate situational circumstances (e.g., "the majority of guests in this room reuse their towels"), which we refer to as provincial norms. Additional experiments conceptually replicate this finding and help elucidate mechanisms driving the effect of provincial norms

Successful use of extracorporeal membrane oxygenation in a human immunodeficiency virus infected patient with severe acute respiratory distress syndrome

Introduction We report a case of an adult patient with human immunodeficiency virus (HIV), acute respiratory distress syndrome (ARDS) and ventilator associated pneumonia (VAP) caused by multidrug resistant (MDR) bacteria that was successfully managed with veno-venous extracorporeal membrane oxygenation (ECMO). Case report A 25 year old male with no significant past medical history had been admitted to a local hospital due to dyspnea and fever. His pulmonary function subsequently failed necessitating mechanical ventilation (MV) and introduction of ECMO support. The patient was transported for 300 km by road on ECMO to a tertiary medical center. The diagnosis of ARDS, HIV infection and MDR bacterial and fungal VAP was made. Patient was successfully treated with antiretroviral therapy (ART), anti-infective agents and 58 days of veno-venous ECMO support, with complete resolution of the respiratory symptoms. Conclusion HIV infected patients with ARDS and MDR bacterial VAP whose HIV replication is controlled by ART could be successfully managed with ECMO

Consumer choices: Going green to be seen

What motivates consumers to buy eco-friendly products? Are people’s choices linked to their concern for the environment and thus to be viewed as expressions of altruism, or are motives fragile and self-serving reflections of concern about social status within the community