Papers by Hannah Bercovici
Space Science Reviews, Apr 1, 2022
Space Science Reviews, 2022
The Psyche mission’s Oxidation-Reduction Working Group is focused on understanding, determining, ... more The Psyche mission’s Oxidation-Reduction Working Group is focused on understanding, determining, and applying the redox state of (16) Psyche to understand the origin of a metal-rich world. The oxidation-reduction state of an asteroid, along with its temperature, parent body size, and composition, is a key parameter in determining the history of an asteroid. Determining the redox state from spacecraft data is most easily done by examining potential metal-oxide buffer pairs. The occurrence of Ni, Fe, C, Cr, P and Si, in that order, in the metal or sulfide phase of an asteroidal body indicates increasingly reduced conditions. Key observations by the Imager and Gamma-Ray and Neutron Spectrometer (GRNS) of Psyche can bracket the redox state using metal-oxide buffers. The presence of Fe,Ni metal can be confirmed by the ratios of Fe/O or Fe/Si and the concentration of Ni variability in metal across the asteroid can be determined by GRNS. The FeO concentration of silicates is complementary ...
How will humanity react to the discovery of extraterrestrial life?Speculation on this topic aboun... more How will humanity react to the discovery of extraterrestrial life?Speculation on this topic abounds, but empirical research is practically non-existent. We report the results of three empirical studies assessing psychological reactions to the discovery of extraterrestrial life using the Linguistic Inquiry and Word Count (LIWC) text analysis software. We examined language use in media coverage of past discovery announcements of this nature, with a focus on extraterrestrial microbial life (Pilot Study). A large online sample (N = 501) was asked to write about their own and humanity’s reaction to a hypothetical announcement of such a discovery (Study 1), and an independent, large online sample (N = 256) was asked to read and respond to a newspaper story about the claim that fossilized extraterrestrial life had been found in a meteorite of Martian origin (Study 2). Across these studies, we found that reactions were significantly more positive than negative, and more reward vs. risk oriented. A mini-meta-analysis revealed large overall effect sizes (positive vs. negative affect language: g = .98; reward vs. risk language: g = .81). We also found that people’s forecasts of their own reactions showed a greater positivity bias than their forecasts of humanity’s reactions (Study 1), and that responses to reading an actual announcement of the discovery of extraterrestrial life showed a greater positivity bias than responses to reading an actual announcement of the creation of man-made synthetic life (Study 2). Taken together, this work suggests that our reactions to a future confirmed discovery of microbial extraterrestrial life are likely to be fairly positive.
<p&amp... more <p>To make an impact on science policy, a relationship between scientists, community leaders, and decision-makers cannot stop at one successful event – it must grow and evolve. The Arizona Science Policy Network aims to facilitate collaboration between early career scientists and decision-makers to draft science-informed policy. Beyond providing interactive and cross-disciplinary training and curriculum to scientists, we facilitate opportunities to practice in real situations, including speaking at town halls and public hearings, organizing public science science cafes and science days, writing policy memos and briefs, and advising on bills. In 2019, we successfully brought more than 60 early career scientists to the Arizona State Capitol to discuss drafts of the complex, multi-state Drought Contingency Plan with decision-makers. Since then, the state government has invited us to help draft sustainability- and climate change-focused legislation. We consider issues like climate change, water quality and availability, heat adaptation and mitigation, science education, ecological and social impacts of mining and industry, waste management, and emerging technologies. As we worked in impacted communities, we soon realized that we were missing the voices of community leaders in the conversation between scientists and policy-makers. In order to correct this, we hosted several science forums in breweries and cafes throughout Arizona. The science cafes initiated collaboration between policy-makers, scientists and community stakeholders, including Native American tribes. These meetings gave scientists, community members, and policy-makers a platform to discuss the environmental and socio-economic  impact of mining sites specific to each forum’s location. Early career scientists contributed their scientific expertise to explain how we can address region-specific problems. Community members also shared their knowledge of each unique area and context of the impact of current business and policy. Policy-makers brought their perspective on how science is used to enact change. From these efforts, we have fostered a more equitable and inclusive environment to ensure that all perspectives and knowledge are included in new bills and policies. Our program has provided a unique experience for scientists to further understand the broader impacts of science on communities and society. This presentation will reflect on the lessons learned in drafting policy with decision-makers and community leaders.</p>
Frontiers in psychology, 2017
How will humanity react to the discovery of extraterrestrial life? Speculation on this topic abou... more How will humanity react to the discovery of extraterrestrial life? Speculation on this topic abounds, but empirical research is practically non-existent. We report the results of three empirical studies assessing psychological reactions to the discovery of extraterrestrial life using the Linguistic Inquiry and Word Count (LIWC) text analysis software. We examined language use in media coverage of past discovery announcements of this nature, with a focus on extraterrestrial microbial life (Pilot Study). A large online sample (= 501) was asked to write about their own and humanity's reaction to a hypothetical announcement of such a discovery (Study 1), and an independent, large online sample (= 256) was asked to read and respond to a newspaper story about the claim that fossilized extraterrestrial microbial life had been found in a meteorite of Martian origin (Study 2). Across these studies, we found that reactions were significantly more positive than negative, and more reward vs...
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Papers by Hannah Bercovici