13,986 research outputs found
Multidimensional perfectionism and narcissism: Grandiose or vulnerable?
Multidimensional perfectionism is related to grandiose narcissism, with other-oriented perfectionism showing the strongest, most consistent relationships. The relationships with vulnerable narcissism, however, are unclear. Our study investigated how three forms of perfectionism--self-oriented, other-oriented, and socially prescribed perfectionism (Hewitt & Flett, 1991)--are related to narcissistic grandiosity and vulnerability. A sample of 375 university students completed the Narcissistic Personality Inventory (Raskin & Terry, 1988), Hypersensitive Narcissism Scale (Hendin & Cheek, 1997), and Pathological Narcissism Inventory (Pincus et al., 2009) capturing various facets of narcissistic grandiosity and vulnerability. Multiple regressions were conducted controlling for the overlap between the three forms of perfectionism and gender. Other-oriented perfectionism showed unique positive relationships with key facets of grandiose narcissism. In contrast, socially prescribed perfectionism showed positive relationships with all facets of vulnerable narcissism. Self- and other-oriented perfectionism showed positive relationships with individual facets only. Other-oriented perfectionism appears to represent a form of perfectionism predominantly related to narcissistic grandiosity, whereas socially prescribed perfectionism is predominantly related to narcissistic vulnerability. As the first study to examine perfectionism in relation to narcissistic grandiosity and vulnerability, our research both extends and clarifies the nomological network of the perfectionism construct in important ways
BCS - BEC crossover at T=0: A Dynamical Mean Field Theory Approach
We study the T=0 crossover from the BCS superconductivity to Bose-Einstein
condensation in the attractive Hubbard Model within dynamical mean field
theory(DMFT) in order to examine the validity of Hartree-Fock-Bogoliubov (HFB)
mean field theory, usually used to describe this crossover, and to explore
physics beyond it. Quantum fluctuations are incorporated using iterated
perturbation theory as the DMFT impurity solver. We find that these
fluctuations lead to large quantitative effects in the intermediate coupling
regime leading to a reduction of both the superconducting order parameter and
the energy gap relative to the HFB results. A qualitative change is found in
the single-electron spectral function, which now shows incoherent spectral
weight for energies larger than three times the gap, in addition to the usual
Bogoliubov quasiparticle peaks.Comment: 11 pages,12 figures, Published versio
The Subcolonization and Buildup of \u3ci\u3eTetrastichus Julis,\u3c/i\u3e (Hymenoptera: Eulophidae) a Larval Parasitoid of the Cereal Leaf Beetle, (Coleoptera: Chrysomelidae) in the Lower Peninsula of Michigan
Following initial establishment of the parasitoid, Tetrastichus julis (Walker), at a carefully managed field nursery, releases of parasitized Oulema melanopus larvae were made by Michigan county agents at preselected sites throughout the lower peninsula during 1970-74. A follow-up recovery program during 1971-75 revealed continued dispersion and population increase for T. julis. An independent census verified the increasing rates of parasitism
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