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  • Ruggeri, Kai, et al. (author)
  • The globalizability of temporal discounting
  • 2022
  • In: Nature Human Behaviour. - : Springer Nature. - 2397-3374. ; 6:10, s. 1386-1397
  • Journal article (peer-reviewed)abstract
    • Economic inequality is associated with preferences for smaller, immediate gains over larger, delayed ones. Such temporal discounting may feed into rising global inequality, yet it is unclear whether it is a function of choice preferences or norms, or rather the absence of sufficient resources for immediate needs. It is also not clear whether these reflect true differences in choice patterns between income groups. We tested temporal discounting and five intertemporal choice anomalies using local currencies and value standards in 61 countries (N = 13,629). Across a diverse sample, we found consistent, robust rates of choice anomalies. Lower-income groups were not significantly different, but economic inequality and broader financial circumstances were clearly correlated with population choice patterns. Ruggeri et al. find in a study of 61 countries that temporal discounting patterns are globally generalizable. Worse financial environments, greater inequality and high inflation are associated with extreme or inconsistent long-term decisions.
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2.
  • Macchia, Gemma, et al. (author)
  • Ring chromosomes, breakpoint clusters, and neocentromeres in sarcomas.
  • 2015
  • In: Genes, Chromosomes and Cancer. - : Wiley. - 1045-2257. ; 54:3, s. 156-167
  • Journal article (peer-reviewed)abstract
    • Gene amplification is relatively common in tumors. In certain subtypes of sarcoma, it often occurs in the form of ring and/or giant rod-shaped marker (RGM) chromosomes whose mitotic stability is frequently rescued by ectopic novel centromeres (neocentromeres). Little is known about the origin and structure of these RGM chromosomes, including how they arise, their internal organization, and which sequences underlie the neocentromeres. To address these questions, 42 sarcomas with RGM chromosomes were investigated to detect regions prone to double strand breaks and possible functional or structural constraints driving the amplification process. We found nine breakpoint cluster regions potentially involved in the genesis of RGM chromosomes, which turned out to be significantly enriched in poly-pyrimidine traits. Some of the clusters were located close to genes already known to be relevant for sarcomas, thus indicating a potential functional constraint, while others mapped to transcriptionally inactive chromatin domains enriched in heterochromatic sites. Of note, five neocentromeres were identified after analyzing 13 of the cases by fluorescent in situ hybridization. ChIP-on-chip analysis with antibodies against the centromeric protein CENP-A showed that they were a patchwork of small genomic segments derived from different chromosomes, likely joint to form a contiguous sequence during the amplification process. © 2014 Wiley Periodicals, Inc.
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