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Mohan Matthen 《No?s (Detroit, Mich.)》2009,43(1):94-115
Standard biological and philosophical treatments assume that dramatic genotypic or phenotypic change constitutes instantaneous speciation, and that barring such saltation, speciation is gradual evolutionary change in individual properties. Both propositions appear to be incongruent with standard theoretical perspectives on species themselves, since these perspectives are (a) non‐pheneticist, and (b) tend to disregard intermediate cases. After reviewing certain key elements of such perspectives, it is proposed that species‐membership is mediated by membership in a population. Species‐membership depends, therefore, not on intrinsic characteristics of an organism, but on relationship of an organism to others. A new definition of speciation is proposed in the spirit of this proposal. This definition implies that dramatic change is neither necessary nor sufficient for speciation. It also implies, surprisingly, that an organism can change species during its lifetime. 相似文献
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Kristin D. Neff 《Social and Personality Psychology Compass》2011,5(1):1-12
This article focuses on the construct of self‐compassion and how it differs from self‐esteem. First, it discusses the fact that while self‐esteem is related to psychological well‐being, the pursuit of high self‐esteem can be problematic. Next it presents another way to feel good about oneself: self‐compassion. Self‐compassion entails treating oneself with kindness, recognizing one’s shared humanity, and being mindful when considering negative aspects of oneself. Finally, this article suggests that self‐compassion may offer similar mental health benefits as self‐esteem, but with fewer downsides. Research is presented which shows that self‐compassion provides greater emotional resilience and stability than self‐esteem, but involves less self‐evaluation, ego‐defensiveness, and self‐enhancement than self‐esteem. Whereas self‐esteem entails evaluating oneself positively and often involves the need to be special and above average, self‐compassion does not entail self‐evaluation or comparisons with others. Rather, it is a kind, connected, and clear‐sighted way of relating to ourselves even in instances of failure, perceived inadequacy, and imperfection. 相似文献
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