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- Resource Type:
- Article
- Creator:
- Harrison, Sarah J., Thomson, Ian R., Bertram, Susan M., and Grant, Caitlin M.
- Abstract:
- Theoretically, sexual signals should provide honest information about mating benefits and many sexually reproducing species use honest signals when signalling to potential mates. Male crickets produce two types of acoustic mating signals: a long-distance mate attraction call and a short-range courtship call. We tested whether wild-caught fall field cricket (Gryllus pennsylvanicus) males in high condition (high residual mass or large body size) produce higher effort calls (in support of the honest signalling hypothesis). We also tested an alternative hypothesis, whether low condition males produce higher effort calls (in support of the terminal investment hypothesis). Several components of long-distance mate attraction calls honestly reflected male body size, with larger males producing louder mate attraction calls at lower carrier frequencies. Long distance mate attraction chirp rate dishonestly signalled body size, with small males producing faster chirp rates. Shortrange courtship calls dishonestly reflected male residual mass, as chirp rate and pulse rate were best explained by a curvilinear function of residual mass. By producing long-distance mate attraction calls and courtship calls with similar or higher effort compared to high condition males, low condition males (low residual mass or small body size) may increase their effort in current reproductive success at the expense of their future reproductive success, suggesting that not all sexual signals are honest.
- Date Created:
- 2013-03-20
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- Resource Type:
- Article
- Creator:
- Van Roon, Patricia Maria, Oberlander, Tim F., Grunau, Ruth E., Hertzman, Clyde, D’Angiulli, Amedeo, Weinberg, Joanne, and Maggi, Stefania
- Abstract:
- Event-related potentials (ERPs) and other electroencephalographic (EEG) evidence show that frontal brain areas of higher and lower socioeconomic status (SES) children are recruited differently during selective attention tasks. We assessed whether multiple variables related to self-regulation (perceived mental effort) emotional states (e.g., anxiety, stress, etc.) and motivational states (e.g., boredom, engagement, etc.) may co-occur or interact with frontal attentional processing probed in two matched-samples of fourteen lower-SES and higher-SES adolescents. ERP and EEG activation were measured during a task probing selective attention to sequences of tones. Pre- and post-task salivary cortisol and self-reported emotional states were also measured. At similar behavioural performance level, the higher-SES group showed a greater ERP differentiation between attended (relevant) and unattended (irrelevant) tones than the lower-SES group. EEG power analysis revealed a cross-over interaction, specifically, lower-SES adolescents showed significantly higher theta power when ignoring rather than attending to tones, whereas, higher-SES adolescents showed the opposite pattern. Significant theta asymmetry differences were also found at midfrontal electrodes indicating left hypo-activity in lower-SES adolescents. The attended vs. unattended difference in right midfrontal theta increased with individual SES rank, and (independently from SES) with lower cortisol task reactivity and higher boredom. Results suggest lower-SES children used additional compensatory resources to monitor/control response inhibition to distracters, perceiving also more mental effort, as compared to higher-SES counterparts. Nevertheless, stress, boredom and other task-related perceived states were unrelated to SES. Ruling out presumed confounds, this study confirms the midfrontal mechanisms responsible for the SES effects on selective attention reported previously and here reflect genuine cognitive differences.
- Date Created:
- 2012-11-19
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- Resource Type:
- Article
- Creator:
- Bezo, Brent, Roberts, William L., and Maggi, Stefania
- Abstract:
- This study examined the combined influences of national levels of socioeconomic status (SES), social capital, and rights and freedoms on population level physical and mental health outcomes. Indicators of mental health were suicide rates, alcohol consumption, and tobacco use. Indicators of physical health included life expectancy, infant mortality rates, and prevalence of HIV. Using pathway analysis on international data from a selected sample of European, North American, South American, and South Caucasus countries, similar models for mental health and physical health were developed. In the first model, the positive effects of SES and social capital on physical health were completely mediated via rights and freedoms. In the second model, the positive effect of SES on mental health was completely mediated, while the impact of social capital was partially mediated through rights and freedoms. We named the models, the "rights and freedoms gradient of health" in recognition of this latter construct's crucial role in determining both physical and mental health.
- Date Created:
- 2012-11-07
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- Resource Type:
- Article
- Creator:
- Durocher, Myriam
- Description:
- This is an Accepted Manuscript of an article published by Taylor & Francis in Fat Studies on 2021-10-08, available online: https://www.tandfonline.com/10.1080/21604851.2021.1980281
- Abstract:
- In this article, I analyze various discourses held by governmental and health authorities, nutrition experts, and civil society organizations that advocate for the importance of consuming and having access to “healthy” food in order to prevent health-related risks associated with diet, such as the development of chronic diseases or conditions like “obesity.” While “anti-obesity” discourses and practices aiming to “help” the population in the fight against “obesity” connect the issue to social or even food justice considerations, I discuss how the discourse of “healthy” food plays a key role both in problematizing the fat body and in the solutions brought forward to “fix it” as well as the broader “obesity” epidemic. I argue that these two roles are closely linked together – because “healthy” food is positioned as a solution to “obesity”, it reinforces the idea that fatness can be “acted on” or solved, and thus that it should be. I mobilize works emerging in critical food and fat studies to address how these discourses and practices contribute to further marginalizing those whose bodies do not match dominant ideas of health while creating harmful and discriminatory processes that have material and health-related consequences. I contend that scholars should be attentive to the broad effectivities of ”healthy” food as arising from “anti-obesity”, or pro-health, discourses and practices as they contribute to further reproducing social injustices and can potentially materialize in damaging ways in individuals’ bodies and health.
- Date Created:
- 2021
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- Resource Type:
- Article
- Creator:
- Durocher, Myriam
- Description:
- This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s Accepted Manuscript terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available at: https://doi.org/10.1057/s41292-022-00274-8
- Abstract:
- Current ‘healthy’ food knowledge revolves around characterizing food by its purported direct, causal effects on the body that ingests it, following a biomedical approach informed by nutritionism (Scrinis, Nutritionism: the science and politics of dietary advice. Columbia University Press, New York, 2013). As long as the focus is on the effects given foods or nutrients have on the ingesting body, a whole array of other effects that produce differentiated bodies beyond ingestion processes receive little attention. I draw on Grossberg (We got to get out of this place: popular conservatism and postmodern culture. Routledge, New York, 1992)’s notion of “effectivities” as a way of taking into account the heterogeneous ‘effects’ that ‘healthy’ food—as a discursive construct and a material object—has, and which occur in different realms (economic, political, agricultural, interspecies, health-related). Using the avocado as a means to illustrate my broader theoretical argument, I contend that ‘healthy’ foods’ effectivities can be observed in how they materialize in differentiated—here racialized—bodies. This raises the key question that permeates the critical stance of this article: whose health matters when it comes to defining ‘healthy’ food?
- Date Created:
- 2022
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- Resource Type:
- Article
- Creator:
- Allahmoradi, Sarah
- Date Created:
- 2021-02-22
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- Resource Type:
- Article
- Creator:
- Kumar, Vinod D., Fuksa, Michael, and Kumar, Uma
- Abstract:
- This paper presents selected preliminary results from a study of B2B e-commerce adoption by Canadian manufacturing firms. The goal of the broad research project IS to describe the behaviour of Canadian manufacturers with respect to adoption of B2B technologies and to identify factors which distinguish adopters from non-adopters of B2B. The study focuses on the organizational characteristics of adopters of B2B e-commerce technologies and attempts to outline the features which differentiate them from non-adopters. Preliminary analysis shows the existence of three distinct B2B adopter types: non-adopters, partial-adopters and full-adopters. Leadership related variables appear to be the most important determinants of adoption.
- Date Created:
- 2007-11-01
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- Resource Type:
- Article
- Creator:
- Pollanen, Raili and Pollanen, Eric M.
- Abstract:
- This paper reviews major differences between the accounting regulatory systems in Canada and the United States. In the U.S., the Sarbanes-Oxley Act of 2002 governs responsibilities of management, auditors, and Boards of Directors related to internal control over financial reporting. In Canada, a series of Multilateral Instruments under provincial jurisdiction serves similar objectives. As compared to the U.S., the Canadian system is more decentralized and principles-based allowing a greater degree of responsibility to the accounting profession for standard setting and oversight. The Canadian approach has resulted in weaker regulation, slower implementation, and greater influence by the accounting profession. These findings imply that accounting regulations should be tailored to fit the political and institutional structures of the adopting country.
- Date Created:
- 2007-11-01
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- Resource Type:
- Article
- Creator:
- Kumar, Uma and Uruthirapathy, Aareni
- Abstract:
- Each year the Canadian government allocates a significant amount of money for science and technology. A major portion of this allocation goes for R& D. In order to enjoy adequate return, technologies that are developed in Canadian federal labs need to be transferred to the public effectively. There are critical factors in technology transfer which play a key role in determining the effectiveness of this transfer process. This study examines the technical, organizational, and people factors which can enhance technology transfer from government laboratories.
- Date Created:
- 2007-11-01
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- Resource Type:
- Article
- Creator:
- Shareef, Mahmud Akhter, Kumar, Vinod D., and Kumar, Uma
- Abstract:
- Implementation of quality management practice in E-Commerce (EC) is a relatively new challenging area to researchers and managers. Proliferation of EC provides an opportunity to quality management gurus to reshape quality dimensions suitable for real sustainability, expansion, and success of EC. Based on the underpinning principles of Total Quality Management (TQM) and quality management practice this paper focuses on the quality dimensions required for launching a successful EC as the competitive edge in gaining market leadership. This article postulates a model to integrate quality management in EC.
- Date Created:
- 2007-11-01