منابع مشابه
Pollination: Sexual Mimicry Abounds
Why do plants mimic female insects to attract males for pollination? A new study gives insights into the advantages of sexual mimicry and documents this pollination system for the first time outside the orchid family, in a South African daisy.
متن کاملOptimism.
Optimism is an individual difference variable that reflects the extent to which people hold generalized favorable expectancies for their future. Higher levels of optimism have been related prospectively to better subjective well-being in times of adversity or difficulty (i.e., controlling for previous well-being). Consistent with such findings, optimism has been linked to higher levels of engag...
متن کاملConfusion abounds about confounds: response to Diana and Ranganath.
References 1 Wixted, J.T. and Squire, L.R. (2011) The medial temporal lobe and the attributes of memory. Trends Cogn. Sci. 15, 210–217 2 Diana, R.A. et al. (2007) Imaging recollection and familiarity in the medial temporal lobe: a three-component model. Trends Cogn. Sci. 11, 379–386 3 Johnson, M.K. et al. (1988) Phenomenal characteristics of memories for perceived and imagined autobiographical ...
متن کاملForsaking Optimism
ly, focusing on desirable rather than feasible outcomes, and the salience of worst-case scenarios give way to better prospects. Shifts in predictions across time represent a natural response to changes in the prevailing informational and emotional context that maximize preparedness for possible outcomes and consequences. Fluctuations in predictions across time should not be taken as evidence of...
متن کاملDispositional optimism.
Optimism is a cognitive construct (expectancies regarding future outcomes) that also relates to motivation: optimistic people exert effort, whereas pessimistic people disengage from effort. Study of optimism began largely in health contexts, finding positive associations between optimism and markers of better psychological and physical health. Physical health effects likely occur through differ...
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ژورنال
عنوان ژورنال: Nature
سال: 1994
ISSN: 0028-0836,1476-4687
DOI: 10.1038/369351d0