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629 results on '"Shepherd, Neil A"'

229. The Normal Peritoneum.

Author

Shepherd, Neil A., Warren, Bryan F., Williams, Geraint T., Greenson, Joel K., Lauwers, Gregory Y., and Novelli, Marco R.

Published
2013
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232. Barrett's Oesophagus.

Author

Shepherd, Neil A., Warren, Bryan F., Williams, Geraint T., Greenson, Joel K., Lauwers, Gregory Y., and Novelli, Marco R.

Published
2013
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237. Front Matter.

Author

Shepherd, Neil A., Warren, Bryan F., Williams, Geraint T., Greenson, Joel K., Lauwers, Gregory Y., and Novelli, Marco R.

Published
2013
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238. Index.

Author

Shepherd, Neil A., Warren, Bryan F., Williams, Geraint T., Greenson, Joel K., Lauwers, Gregory Y., and Novelli, Marco R.

Published
2013
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245. Morson and Dawson's Gastrointestinal Pathology

Author

Day, David W., primary, Jass, Jeremy R., additional, Price, Ashley B., additional, Shepherd, Neil A., additional, Sloan, James M., additional, Talbot, Ian C., additional, Warren, Bryan F., additional, and Williams, Geraint T., additional

Published
2003
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246. The Politics of Acquisitions: An Upper Echelons Perspective.

Author

Lou, Bowen, Shepherd, Neil Gareth, Strobl, Andreas, and Bauer, Florian

Abstract

Acquisitions are among the most complex, exacting, intractable, and high stakes decisions faced by Top Management Teams (TMTs). Consequently, they are inherently political in nature--provoking conflicting viewpoints and power struggles among executives. While political behavior is a central construct in organizational theory, and despite widespread acknowledgement of its inevitable presence in Mergers and Acquisitions (M&A) decision making, there is a shortage of theory and evidence concerning its antecedents and consequences. Consequently, to address this gap, we draw upon the upper echelons literature to develop and test a theoretical model of political behavior in M&A decision making. Focusing on the psychological context surrounding the TMT, we theorize that TMT cognitive diversity fuels political behavior which in turn undermines acquisition performance. Critically, we also theorize that TMT cohesion serves as the central generative mechanism enabling acquirers to counteract the effects of TMT cognitive diversity and thereby dampen damaging political behavior. We test our theoretical model using a field sample of 109 acquisitions in the UK, utilizing direct psychometric measures validated with objective secondary performance data. The results support our theory, and TMT cognitive diversity leads to political behavior during M&A decision making. TMT cohesion reduces political behavior, it also interacts with cognitive diversity, and contrary to our theory, cognitive diversity appears to weaken the benefits of cohesion. Based on these findings, we discuss the important theoretical and practical implications. [ABSTRACT FROM AUTHOR]

Published
2022
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247. Cognitive Diversity in Strategic Decision Making: A Contextual Contingency Perspective.

Author

Shepherd, Neil Gareth, Lou, Bowen, Rudd, John, and Strobl, Andreas

Abstract

The riddle of diversity remains unresolved; it can spur innovation and creativity, yet also give rise to hostile conflict. Indeed, disagreement abounds as to whether cognitive diversity--which represents differences in ideas, preferences and beliefs among top managers concerning firm strategy--leads to positive or negative outcomes. While meta-analyses have concluded that the consequences of cognitive diversity among upper echelons executives are largely negative; the fact remains that the effects of diversity vary considerably across different studies, indicating the presence of unknown moderators and mediators. Hence in this study, recognizing the embeddedness of top managers within their firm and broader environmental context, we build new theory concerning moderating and mediating influences on the effects of cognitive diversity. We test our theory on a multi-informant, multi-source sample of 117 strategic decisions. We find a main negative effect of cognitive diversity on top management team behavioral integration, and that behavioral integration mediates the negative effects of cognitive diversity on decision comprehensiveness. We further develop new knowledge by drawing on resource-based theory, and we theorize that firm size and environmental hostility moderate the effects of cognitive diversity on behavioral integration and on comprehensiveness. [ABSTRACT FROM AUTHOR]

Published
2022
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248. Anal and Perianal Preneoplastic Lesions

Author

Loughrey, Maurice B. and Shepherd, Neil A.

Abstract

Anal cancer, mainly squamous cell carcinoma, is rare but increasing in prevalence, as is its precursor lesion, anal squamous dysplasia. They are both strongly associated with human papillomavirus infection. The 2-tiered Lower Anogenital Squamous Terminology classification, low-grade SIL and high-grade SIL, is preferred to the 3-tiered anal intraepithelial neoplasia classification because of better interobserver agreement and clearer management implications. Immunohistochemistry with p16 is helpful to corroborate the diagnosis of squamous dysplasia. Similarly, immunohistochemistry is helpful to differentiate primary Paget disease from secondary Paget disease, which is usually due to anal squamous mucosal/epidermal involvement by primary rectal adenocarcinoma.

Published
2023
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