Which executive functioning deficits are associated with AD/HD, ODD/CD and comorbid AD/HD+ODD/CD?

Item does not contain fulltextThis study investigated (1) whether attention deficit/hyperactivity disorder (AD/HD) is associated with executive functioning (EF) deficits while controlling for oppositional defiant disorder/conduct disorder (ODD/CD), (2) whether ODD/CD is associated with EF deficits while controlling for AD/HD, and (3)~whether a combination of AD/HD and ODD/CD is associated with EF deficits (and the possibility that there is no association between EF deficits and AD/HD or ODD/CD in isolation). Subjects were 99~children ages 6–12 years. Three putative domains of EF were investigated using well-validated tests: verbal fluency, working memory, and planning. Independent of ODD/CD, AD/HD was associated with deficits in planning and working memory, but not in verbal fluency. Only teacher rated AD/HD, but not parent rated AD/HD, significantly contributed to the prediction of EF task performance. No EF deficits were associated with ODD/CD. The presence of comorbid AD/HD accounts for the EF deficits in children with comorbid AD/HD+ODD/CD. These results suggest that EF deficits are unique to AD/HD and support the model proposed by R. A. Barkley (1997).17 p

On Regularity of Abnormal Subriemannian Geodesics

We prove the smoothness of abnormal minimizers of subriemannian manifolds of step 3 with a nilpotent basis. We prove that rank 2 Carnot groups of step 4 admit no strictly abnormal minimizers. For any subriemannian manifolds of step less than 7, we show all abnormal minimizers have no corner type singularities, which partly generalize the main result of Leonardi-Monti.Comment: This paper has been withdrawn by the author due to a crucial computation error in (F_t^1)_sta

Detection of abnormal recordings in Irish milk recorded data

peer-reviewedThe objective of this study was to detect abnormal recordings of milk yield, fat concentration and protein concentration in Irish milk-recorded data. The data consisted of 14,956 records from both commercial and experimental herds with 92% of the recordings recorded manually and the remainder recorded electronically. The method used in this paper was a modified version of the method employed by the Animal Improvement Programs Laboratory in Maryland, USA and conformed with the guidelines outlined by the International Committee of Animal Recording. The results illustrate the effectiveness of detecting abnormal recordings in Irish milk records. The method described in this paper, defines the upper and lower limits for each production trait and these limits along with the slope parameters were used to determine if a recording was abnormal or not. Three percent of milk yield recordings, 5% of fat concentration recordings and less than 1% of protein concentration recordings were found to be abnormal. The proportion of values declared abnormal in manually recorded and electronically recorded data were examined and found to be significantly different for fat concentration

Statistical Origin of Pseudo-Hermitian Supersymmetry and Pseudo-Hermitian Fermions

We show that the metric operator for a pseudo-supersymmetric Hamiltonian that has at least one negative real eigenvalue is necessarily indefinite. We introduce pseudo-Hermitian fermion (phermion) and abnormal phermion algebras and provide a pair of basic realizations of the algebra of N=2 pseudo-supersymmetric quantum mechanics in which pseudo-supersymmetry is identified with either a boson-phermion or a boson-abnormal-phermion exchange symmetry. We further establish the physical equivalence (non-equivalence) of phermions (abnormal phermions) with ordinary fermions, describe the underlying Lie algebras, and study multi-particle systems of abnormal phermions. The latter provides a certain bosonization of multi-fermion systems.Comment: 20 pages, to appear in J.Phys.

atrophy plus syndrome, or costeff optic atrophy syndrome): identification of the OPA3 gene and its

deficiencies in a male with cardiomyopathy and 3-methylglutaconic aciduria, ” J Inherit Metab Dis

The valuation effect and determinants of corporate contracting : a thesis presented in partial fulfillment of the requirements for a Master of Business Studies at Massey University, December 2002

This study examined abnormal stock market returns to equity holders around corporate contract announcement that were obtained from Dow Jones & Company, Inc. between January 1, 1990 and December 31, 2000. Of the 7137 contract announcement found, 984 contract winning companies (contractee) and 575 contract giving companies (contractor) were not contaminated by other announcements and have sufficient CRSP data to enter the final sample that was analyzed for excess returns to the contractees. Excess returns were also analyzed for the contractors. The Asymmettic Information Hypothesis and Information Content Hypothesis were used to develop hypotheses that predict contract announcement abnormal returns. The Market Model was used to analyze abnormal returns for both the contractees and contractors. As expected, statistically significant cumulative average excess returns were found for contractee companies, but not for contractor companies. Contractee excess returns were also examined for different industry groups. Also, the international or domestic nature of the contractor is analyzed for differences in abnormal returns. Contrary to expectations, the market reacted with more significant abnormal return for domestic contracting than the international contracting. Finally, cross-sectional regression models are developed to test the statistical significance of variables relative to sample characteristic, firm size, profitability, and information asymmetries of firm. Contractee relative contract size was found to have significant impact on cumulative average abnormal returns. Dummy variables were included in the cross-section model to account for the sequence of the contract and nationality of the contractee and contractor, but they were statistically insignificant to the model. The variables for contractor's firm were also statistically insignificant in effecting abnormal returns for their equity