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To measure the importance of personality and individual characteristics in such extreme environments as high-altitude mountaineering, this study investigated how physical, physiological, and/or hormonal markers provide insights into individual predilections for competitive and risk-taking behaviours. Because climbing outcomes depend on the ability to overcome adverse environmental conditions, avoid unnecessary risks, and exert sufficient self-regulation to handle extreme physiological and psychological stressors, it focused particularly on the relation between the successful scaling among Mount Everest climbers and risk attitudes, personality factors (from the Big Five Inventory) or traits associated with prenatal androgen exposure (2D:4D ratio). The results indicate not only that the 2D:4D ratio positively predicts lifetime mountaineering success but that the more risk averse open-minded and emotionally stable the climbers, the more active and successful compared to their peers. These findings, in addition to suggesting that human biological and psychological traits substantially influence success and long-term performance in extreme situations, offer valuable insights into how humans with different tendencies are likely to behave under such stressful conditions.

We explore the effects of the quantity of information on the tendency to contribute to crowd-funding campaigns. Using the crowdfunding platform Kickstarter, we analyze the campaign descriptions and the performance of over 70,000 projects. We look empirically at the effect of information quantity (word count) on funding success (as measure by amount raised and number of backers). Within this empirical approach, we test whether an excessive amount of information will affect funding success. To do so, we test for the non-linearity (quadratic) effect of our independent variable (word count) using regression analysis. Consistent with the hypothesis that excess information will negatively affect funds raised and number of contributors, we observe a consistent U-shaped relationship between campaign text length and overall success which suggest that an optimal number of words exists within crowdfunding texts and that going over this point will reduce a project's chance of fundraising success.