The current research examines the extent to which attitudes and personality traits are predictive of pro-environmental behavior (PEB). Concretely, we tested the relationship between pro-environmental attitudes, HEXACO personality traits, and actual PEB (donating potential prize money to a pro-environmental organization; N = 257). Additionally, we controlled for the influence of helping behavior (donating to a pro-social organization) by addressing whether attitudes and personality have a distinct impact on PEB or whether people are more likely to engage in PEB because they act more pro-socially in general. Analyses included correlations, multiple linear regressions, mediations, and partial correlations. Pro-environmental attitude had the most robust association with PEB and mediated the influence of openness to experiences and honesty–humility on PEB. Importantly, the relationship of pro-environmental attitudes and personality (openness to experiences and honesty–humility) with PEB was unaffected by the participant’s helping behavior, suggesting that pro-environmental people mainly care about the environment and are not necessarily more pro-social in general.

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The COVID-19 pandemic led to serious restrictions on peoples’ everyday lives and had severe economic impacts. In contrast, “lockdown” restrictions led to short-term beneficial effects for the environment. In the present study, we compared pro-environmental behavior and materialism values before, during, and after COVID-19 lockdown restrictions in the spring of 2020. The results of an online study using 370 participants showed a decrease in materialism values and pro-environmental sacrificing actions. In contrast, ecologically compatible actions decreased during the lockdown and increased again to the initial level after restrictions were loosened. Moreover, pro-environmental attitudes had a diminishing effect on materialism values, especially during lockdown restrictions. Agreeableness had a diminishing effect on materialism values during the lockdown. In contrast, trait narcissism enhanced materialism values, which were strongest after the lockdown was over. In conclusion, materialism values and pro-environmental behaviors were “locked down” due to COVID-19 restrictions but did not show the expected rebound effects. Practical and theoretical implications are discussed.

Based on the ‘Inclusion Model of Environmental Concern’, we tested whether daily messaging intervention increases participants’ pro-environmental behavior (PEB). In a two (time: pre vs. post, repeated measure) × three (condition: egoistic appeals, ecological appeals, control group) experimental design, two hundred and eighteen individuals received either daily messages containing egoistic appeals for action to prevent climate change (e.g., preventing personal consequences of released diseases in melting arctic ice), ecological appeals (e.g., ecological consequences of melting glaciers), or no messages (control). PEB was assessed via self-reports and donations to an environmental organization. Neither of the appeals had an effect on the two dependent measures. Irrespective of experimental conditions, self-reported PEB was higher in the post- compared with the pre-test. Overall, the present results do not provide support for the effectiveness of a daily messaging technique. Instead, it appears that ‘being observed’ is the more effective ‘intervention’. Implications for how to foster PEB are discussed.

Background Ultra-endurance cyclists regularly report various extents of bodily decline during long-distance bicycle rides, including potential kidney function-related symptoms such as swelling of body parts and urine changes. This study aimed to assess the prevalence of these symptoms in a representative cohort of ultra-endurance cyclists and shed light on potential predictors related to the ride, the rider and the rider’s behavior. Methods Between November 26 and December 14, 2020, 1350 people participated in an online survey investigating potential kidney-related symptoms of ultra-distance cycling. Frequency and severity of edema-like (“swelling”) symptoms and perceived changes in urine output, concentration and quality were associated with ride-related factors, demographic parameters and rider behavior-related variables. Results A total of 919 participants met the predefined inclusion criteria. The majority (N = 603, 65.6%) stated that they suffered from at least one potential kidney function-related symptom, out of which 498 (54.2%) stated one or more edema-like (“swelling”) symptoms. In correlational and multiple regression analyses, female sex, intake of analgesics and drinking strategies correlated with swelling symptoms. Further analyses indicated that drinking due to thirst and/or drinking adapted to ambient sweating and temperature negatively correlated with swelling symptoms, whereas “drinking as much as possible” enhanced these. Intake of analgesics was moderately positively correlated with swelling symptoms. Conclusions According to our survey, edema-like symptoms occur in the majority of ultra-distance cyclists and female sex, drinking strategy and intake of analgesic drugs are major predictors thereof. Studies are needed to investigate the underlying pathophysiological processes of such symptoms.

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Study 1 examined how personality and attitudes are related to daily pro-environmental behavior (PEB) and whether these relationships are moderated by perceived behavioral costs and benefits. One hundred and seventy-eight participants responded to scales measuring the dark and light side of personality, as well as their pro-environmental attitude. Afterward, they were notified three times a day for 7 days in a row. Each time they reported their PEB that had occurred in the past four hours and indicated their behavioral costs and benefits. Multilevel analyses showed a positive relationship between the frequency of PEB and the light triad of personality and pro-environmental attitude, while the dark tetrad was negatively related to PEB. Unexpectedly, less environmentally aware participants reported to engage in PEB with higher costs and lower benefits than did pro-environmental participants. A second study (N = 159) suggests that less environmentally aware people do not actually engage in PEB with high costs and low benefits, but rather that they only perceive their behavior to be costly and of little benefit. Overall, our findings suggest that the way people perceive their daily PEB is not necessarily shared by others.