Blood lead (Pb) levels: a potential environmental mechanism explaining the relation between socioeconomic status and cardiovascular reactivity in children.

OBJECTIVE: A number of studies have shown an association between socioeconomic status (SES) and cardiovascular reactivity to acute stress. In addition, the authors recently reported that higher early childhood blood lead (Pb) levels are associated with significantly greater total peripheral (vascular) resistance (TPR) responses to acute stress. It is not known whether the SES-TPR association is mediated by underlying differences in blood lead levels. DESIGN: Participants were 9.5-year-old children (N=122) with established early childhood blood lead levels. MAIN OUTCOME MEASURES: Family SES was measured using the Hollingshead Index, blood lead levels were abstracted from pediatrician and state records, and children's cardiovascular responses to acute stressors were measured in the laboratory with impedance cardiography and an automated blood pressure monitor. RESULTS: Lower family SES was shown to be associated with significantly higher blood lead levels as well as significantly heightened systolic blood pressure, diastolic blood pressure, and TPR responses to acute stress tasks. A mediational analysis confirmed that Pb was a significant mediator of the SES-TPR reactivity association; some evidence also suggested moderation. CONCLUSION: These results suggest the importance of considering the chemical environment as well as social and psychological environment when evaluating cardiovascular effects of low SES.     

Using Biodata to Predict Turnover,Organizational Commitment,and Job Performance in Healthcare

The purpose of the present study was to test whether or not a biodata instrument could be used to predict turnover, organizational commitment, and job performance in healthcare organizations. A criterion‐related, predictive validation strategy was used using a sample of 672 employees from two different hospitals in the southeastern United States. Supervisory ra0tings of organizational commitment and job performance were highly correlated with responses to the organizational commitment scale and the total score on the biodata instrument, respectively. Actual turnover was correlated with responses to the retention scale, although the effect size was small. Additionally, the study examined the fairness of biodata in this context as it relates to differences in performance among minority and non‐minority candidates. The findings in this study suggest that using such an instrument may provide organizations with the potential to improve organizational commitment and job performance, while reducing turnover with minimal group differences.     

A Longitudinal Test of the Model of Political Conservatism as Motivated Social Cognition

Using data from a longitudinal study of college students, this study assessed the relationships among the threat perceptions of realistic threat and intergroup anxiety, the ideological motives of system justification and social dominance orientation (SDO), and political conservatism. Those who had higher perceptions of realistic threat and intergroup anxiety at the end of their first year of college showed higher levels of system justification and SDO at the end of their second and third years of college, controlling for precollege expressions of each variable. Higher levels of these two ideological motives at the end of students' second and third years of college were associated with more politically conservative attitudes at the end of students' fourth year of college, again controlling for precollege expressions. These longitudinal results are discussed in terms of a model of political conservatism as motivated social cognition.     

Relative judgment and knowledge of the category structure

For evenly spaced stimuli, a purely relative judgment account of unidimensional categorization performance is trivial: All that is required is knowledge of the size of stimulus difference corresponding to the width of a category. For unevenly spaced stimuli, long-term knowledge of the category structure is required. In the present article, we will argue that such knowledge does not necessitate a direct, absolute mapping between (representations of ) stimulus magnitudes and category labels. We will show that Stewart, Brown, and Chater’s (2005) relative judgment model can account for data from absolute identification experiments with uneven stimulus spacing.     

Moral and Nonmoral Freedom in Kant

Many scholars, in view of the close link that he draws between morality and freedom, argue that Kant does not think that there are free choices between nonmoral ends. On this view, Kant only posits a freedom to resist our desires and act morally. We are still responsible for immoral choices because we always have the power to act morally. Henry Allison has opposed this reading by arguing that Kant grounds a notion of nonmoral freedom in the Incorporation Thesis. In this paper, I criticize Allison's argument and then try to replace it with an alternative that grounds nonmoral freedom in morality.     

The three-factor structure of the Eysenck personality inventory revealed by a two-step confirmatory procedure

Evidence for the existence of the assumed three-subscale structure of the Eysenck Personality Inventory has been persistent but tenuous. It was suggested that a substantial reason for this may be the discrepancy between the numbers of items in the Lie (L) scale (9 items) and those in the other two scales [Neuroticism (N) and Extraversion (E)] which have 24 items in each. A two-step confirmatory procedure to circumvent this problem was proposed, involving a two-factor analysis of the Neuroticism and Extraversion items, followed by a three-factor analysis of equal numbers of N, E and L scale items. An analysis of the responses of 386 undergraduates demonstrating the proposed procedure revealed in the first step, quite unequivocally, the presence of Neuroticism and Extraversion factors, and in the second step, a third factor clearly congruent with the L scale.     

Institutional creativity and pathologies of potential space: The modern university

Abstract

This paper proposes the applicability of object relations psychoanalytic conceptions of dialogue (Ogden, 1986 Ogden, T. 1986. The matrix of the mind, London: Karnac.  [Google Scholar], 1993 Ogden, T. 1993. “On potential space”. In In one's bones: The clinical genius of Winnicot, Edited by: Goldman, D. Northvale, NJ: Jason Aaronson.  [Google Scholar]) to thinking about relationships and relational structures and their governance in universities. It proposes that:

• the qualities of dialogic relations in creative institutions are the proper index of creative productivity; that is of, as examples, ‘thinking’ (Evans, 2004 Evans, M. 2004. Killing thinking: The death of the universities, London: Continuum.  [Google Scholar]), ‘emotional learning’ (Salzberger-Wittenburg et al., 1983 Salzberger-Wittenburg, I., Henry, G. and Osborne, E. 1983. The emotional experience of learning and teaching, London: Routledge.  [Google Scholar]) or ‘criticality’ (Barnett, 1997 Barnett, R. 1997. Higher education: A critical business, Buckingham: Open University Press.  [Google Scholar]);

• contemporary institutions' explicit preoccupation in assuring, monitoring and managing creative ‘dialogue’ can, in practice, pervert creative processes and thoughtful symbolic productivity, thus inhibiting students' development and the quality of ‘thinking space’ for teaching and research.

In this context the paper examines uncanny and perverse connections between Paulo Freire's (1972 Freire, P. 1972. Pedagogy of the oppressed, London: Penguin.  [Google Scholar]) account of educational empowerment and dialogics (from his Pedagogy of the oppressed) to the consumerist (see, for example, Clarke & Vidler, 2005 Clarke, J. and Vidler, E. 2005. Creating citizen-consumers: New labour and the remaking of public services. Public Policy and Administration, 20: 19–37.  [Google Scholar]) rhetoric of student empowerment, as mediated by some strands of managerialism in contemporary higher education. The paper grounds its critique of current models of dialogue, feedback loops, audit and other mechanisms of accountability (Power, 1997 Power, M. 1997. The Audit Society: Ritual's of verification, Oxford: Oxford University Press.  [Google Scholar]; Strathern, 2000 Strathern M. Audit cultures: Anthropological studies in accountability, ethics and the academy London Routledge 2000 [Crossref] , [Google Scholar]), in a close analysis of how creative thinking emerges.

The paper discusses the failure to maintain a dialogic space in humanities and social science areas in particular, exploring psychoanalytic conceptions from Donald Winnicott (1971 Winnicott, D. W. 1971. Playing and Reality, London: Routledge.  [Google Scholar]), Milner (1979 Milner, M. 1979. On not being able to paint, New York: International Universities Press.  [Google Scholar]), Thomas Ogden (1986 Ogden, T. 1986. The matrix of the mind, London: Karnac.  [Google Scholar]) and Csikszentmihalyi (1997 Csikszentmihalyi, M. 1997. Creativity, New York: Harper Perennial.  [Google Scholar]). Coleridge's ideas about imagination as the movement of thought between subjective and objective modes are discussed in terms of both intra- and inter-subjective relational modes of ‘dialogue’, which are seen as subject to pathology in the pathologically structured psychosocial environment. Current patterns of institutional governance, by micromanaging dialogic spaces, curtail the ‘natural’ rhythms and temporalities of imagination by giving an over-emphasis to the moment of outcome, at the expense of holding the necessary vagaries of process in the institutional ‘mind’. On the contrary, as this paper argues, creative thinking lies in sporadic emergences at the conjunction of object/(ive) outcome and through (thought) processes.     

The role of relative deprivation in majority-culture support for multiculturalism

In this paper, we investigate majority-culture attitudes to multicultural policy in Australia. Drawing on relative deprivation (RD) theory, we explore whether resistance to multicultural policies and initiatives is related to individual and/or group-based grievance claims of discrimination. To assess RD, we asked 517 Australian-born people who identified as White Australians to rate (a) levels of discrimination toward their own group, toward themselves personally as a consequence of their group membership, and toward immigrants to Australia, and (b) feelings of injustice and anger associated with such discrimination. Our findings show that, while perceptions of discrimination toward majority-culture Australians are commonplace, perceptions of discrimination toward immigrants are more so. We also found that higher ratings of group-based RD of Australians relative to immigrants, but not individual deprivation relative to immigrants, predicted opposition to multicultural policies and initiatives. Moreover, perceived group-based RD mediated the link between national identification and opposition to multicultural policies. The findings highlight, for the first time, the importance of group-based grievance claims by majority-culture members in opposing or supporting multicultural policy.     

Human operant performance: Sensitivity and pseudosensitivity to contingencies

Undergraduates' button presses occasionally produced points exchangeable for money. Left and right buttons were initially correlated with multiple random-ratio (RR) and random-interval (RI) components, respectively. During interruptions of the multiple schedule, students filled out sentence-completion guess sheets describing the schedules, and points were contingent upon the accuracy of guesses. To test for sensitivity to schedule contingencies, schedule components were repeatedly reversed between the two buttons. Pressing rates were consistently higher in ratio than in interval components even when feedback for guesses was discontinued, demonstrating sensitivity to the difference between ratio and interval contingencies. The question was whether this sensitivity was based directly on the contingencies or whether it was rule-governed. For two students, when multiple RR RI schedules were changed to multiple RI RI schedules, rates became low in both components of the multiple RI RI schedule; however, subsequent prevention of point deliveries for the first few responses in any component produced high rates in that component. For a third student, response rates became higher in the RI component that provided the lower rate of reinforcement. In each case, performance was inconsistent with typical effects of the respective schedules with nonhuman organisms; it was therefore plausible to conclude that the apparently contingency-governed performances were instead rule-governed.     

Interactive effects of behavior and reproductive hormones on sex differences in risk for coronary heart disease

It is well known that women in the United States, as in most industrialized countries in the world, are protected from coronary heart disease (CHD), relative to men. It is thought that this protection is by and large due to the effects of female reproductive hormones (i.e., estrogens) on lipid and lipoprotein metabolism and blood pressure, although women's relatively low rates of cigarette smoking are also thought to play a role. However, epidemiological studies that statistically adjust for sex differences in lipids, blood pressure, and smoking status cannot explain sex differences in CHD morbidity and mortality. Also, inconsistent with a simple main-effect model of reproductive hormones are data showing elevated risk of myocardial infarction and stroke among women who use oral contraceptives. Men who are prescribed estrogens have elevated risk of CHD, and case-control studies show that male CHD patients have elevated estradiol, compared to controls. This article suggests that simple main-effect models of female protection from CHD are inadequate. It argues that reproductive hormones are important determinants of protection from CHD, in interaction with behavioral characteristics. It also demonstrates that reproductive hormones can influence behavioral characteristics and that behavioral characteristics can influence the effects of reproductive hormones on CHD risk factors.