402 research outputs found
Cross cultural verbal cues to deception: truth and lies in first and second language forensic interview contexts
Introduction: The verbal deception literature is largely based upon North American and Western European monolingual English speaker interactions. This
paper extends this literature by comparing the verbal behaviors of 88 south Asian bilinguals, conversing in either first (Hindi) or second (English) languages, and 48 British monolinguals conversing in English.
Methods: All participated in a live event following which they were interviewed having been incentivized to be either deceptive or truthful. Event details,
complications, verifiable sources, and plausibility ratings were analyzed as a function of veracity, language and culture.
Results: Main effects revealed cross cultural similarities in both first and second language interviews whereby all liarâs verbal responses were impoverished and rated as less plausible than truthtellers. However, a series of cross-cultural interactions emerged whereby bi-lingual South Asian truthtellers and liars interviewed in first
and second languages exhibited varying patterns of verbal behaviors, differences that have the potential to trigger erroneous assessments in practice.
Discussion: Despite limitations, including concerns centered on the reductionary nature of deception research, our results highlight that while cultural context is important, impoverished, simple verbal accounts should trigger a âred flagâ for
further attention irrespective of culture or interview language, since the cognitive load typically associated with formulating a deceptive account apparently
emerges in a broadly similar manner
Global monopoles in dilaton gravity
We analyse the gravitational field of a global monopole within the context of
low energy string gravity, allowing for an arbitrary coupling of the monopole
fields to the dilaton. Both massive and massless dilatons are considered. We
find that, for a massless dilaton, the spacetime is generically singular,
whereas when the dilaton is massive, the monopole generically induces a long
range dilaton cloud. We compare and contrast these results with the literature.Comment: 15 pages, 3 figures, version to appear in Class Quant Gra
Contribution of forbidden orbits in the photoabsorption spectra of atoms and molecules in a magnetic field
In a previous work [Phys. Rev. A \textbf{66}, 0134XX (2002)] we noted a
partial disagreement between quantum R-matrix and semiclassical calculations of
photoabsorption spectra of molecules in a magnetic field. We show this
disagreement is due to a non-vanishing contribution of processes which are
forbidden according to the usual semiclassical formalism. Formulas to include
these processes are obtained by using a refined stationary phase approximation.
The resulting higher order in contributions also account for previously
unexplained ``recurrences without closed-orbits''. Quantum and semiclassical
photoabsorption spectra for Rydberg atoms and molecules in a magnetic field are
calculated and compared to assess the validity of the first-order forbidden
orbit contributions.Comment: 12 pages, 6 figure
Semiclassical Quantisation Using Diffractive Orbits
Diffraction, in the context of semiclassical mechanics, describes the manner
in which quantum mechanics smooths over discontinuities in the classical
mechanics. An important example is a billiard with sharp corners; its
semiclassical quantisation requires the inclusion of diffractive periodic
orbits in addition to classical periodic orbits. In this paper we construct the
corresponding zeta function and apply it to a scattering problem which has only
diffractive periodic orbits. We find that the resonances are accurately given
by the zeros of the diffractive zeta function.Comment: Revtex document. Submitted to PRL. Figures available on reques
Semiclassical Quantization by Pade Approximant to Periodic Orbit Sums
Periodic orbit quantization requires an analytic continuation of
non-convergent semiclassical trace formulae. We propose a method for
semiclassical quantization based upon the Pade approximant to the periodic
orbit sums. The Pade approximant allows the re-summation of the typically
exponentially divergent periodic orbit terms. The technique does not depend on
the existence of a symbolic dynamics and can be applied to both bound and open
systems. Numerical results are presented for two different systems with chaotic
and regular classical dynamics, viz. the three-disk scattering system and the
circle billiard.Comment: 7 pages, 3 figures, submitted to Europhys. Let
Estimation, à l'aide d'une lignée-témoin, del'évolution génétique des caractÚres d'engraissement et de carcasse du Porc Large White en France, de 1965 à 1973
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