Mixed Messages in Risk Communication

The exchange of risk information between risk managers and affected parties is frequently hampered by differences in the understanding or interpretation of many words and phrases. Much of the terminology used by risk practitioners may have different "technical" and "colloquial" meanings, resulting in "mixed messages" in risk communication. Several words and concepts commonly used in risk management that may be resulting in these "mixed messages" are discussed. These include primary underlying concepts, such as the various meanings of the word "risk" itself, as well as the perplexity of the notions of "safety vs. zero risk" and "probability". The potential "mixed messages" of the derived concepts of "significant vs. nonsignificant", "negative vs. positive results", "conservative assumptions", "population vs. individual risk", "relative vs. absolute risk", and "association vs. causation" are shown to range from mild confusion to the completely opposite interpretation of these words and expressions. Suggested strategies for recognizing and mitigating the use of words and phrases which may create unnecessary confusion are presented.     

Improved Bounds on Relaxations of a Parallel Machine Scheduling Problem

We consider the problem of scheduling n jobs withrelease dates on m identical parallel machines to minimize the average completion time of the jobs. We prove that the ratio of the average completion time of the optimal nonpreemptive schedule to that of the optimal preemptive schedule is at most 7/3, improving a bound of Shmoys and Wein.     

The Power Behind Empowerment: Implications for Research and Practice

The 1990s have been called theempowerment era, yet growing evidencesuggests that empowerment programs often fail to meetthe expectations of both managers and employees. Toprovide a better understanding as to why empowerment programs often fail andto suggest how such failures may be averted, we examinethe power behind empowerment. Ironically, although powerand empowerment are inextricably linked, much of the work on empowerment in the businessliterature has been devoid of any discussion of power.We present a four-dimensional model which shows themultifaceted way in which power works. In it, we observe the similarities and differences in the waysthat different theorists have approached the study ofpower, notably those ascribing to mainstream , critical, and Foucauldian perspectives. We then use this power model as a lens with which to examineempowerment practices in business. This analysissuggests a number of possible reasons for the failure ofbusiness empowerment programs and provides directions for future research and practice which mightaddress these shortcomings.     

Parenting Practices of Resident Fathers: The Role of Marital and Biological Ties

This paper uses data from the Fragile Families and Child Wellbeing Study (N = 2,098) to examine differences in the parenting practices of four types of resident fathers, defined by their biological relationship to a focal child and their marital status with regard to the focal child's mother. Regression results suggest that biological and social (i.e., stepfathers or mothers' cohabiting partners) fathers differ significantly, and in some unexpected ways, on most measures of parenting. However, a considerable portion of these differences can be explained by variation in the background characteristics of the individuals and families in each group. Additionally, difference-in-difference analyses reveal a stronger link between marriage and higher quality parenting practices among social fathers than among biological fathers.     

就埃贝尔森对戈尔斯坦、查隆、比尔批评的回应

笔者的论文<高海拔地区缺氧、文化和人类生殖力的比较研究>(<美国人类学家>85:28-49,1983)提出了一个问题,是否高海拔地区缺氧的生理压力减低了人类的生殖力.     

SOURCES OF INFORMATION ABOUT HIV/AIDS AND PERCEIVED RISK OF INFECTION AMONG HETEROSEXUAL YOUNG ADULTS: 1989 AND 1994

This paper reports a study of sources of information about HIV/AIDS and trust of the sources among heterosexuals in 1989 (113 females and 91 males) and 1994 (185 females and 66 males). We also examined whether perceived personal risk of HIV infection was predicted by sources of information about HIV/AIDS, trust of the sources, how informed about AIDS people believed they were, and perceived risk of infection to others, as well as whether there was a relationship between perceived personal risk and safe sex behaviour. Participants received most of their information about AIDS/HIV from magazines, newspapers, and television, but placed most trust on sources such as doctors and HIV/AIDS organisations. Perceived personal risk was influenced most by perceived risk to friends and to people with the same sexual practices. In the 1994 sample, perceived personal risk was correlated with the amount of condom use among participants with sexual experience. These results indicate ther has been relative stability across a five-year period. They also point to the continuing discrepancy among young heterosexuals between the most-used and most-trusted sources of information, as well as to the importance of peer influence on perceptions of personal risk of HIV infection.     

Gender role attitudes and attitudes to abortion: Are there gender differences?

This study examines gender differences in gender role attitudes and attitudes to abortion in a sample of 141 undergraduate students. Religion and religiosity were treated as covariates. Using the short version of Spence and Helmreich's (1978) Attitudes to Women Scale (AWS) taken from Spence and Hahn [Spence, J. T., & Hahn, E. D. (1997). The Attitudes Toward Women Scale and attitude to change in college students. Psychology of Women Quarterly, 21, 17–34] and the abortion attitudes scale developed by Stets and Leik [Stets, J. E., & Leik, R. K. (1993). Attitudes about abortion and varying attitude structures. Social Science Research, 22, 265–282], we found that females have more liberal attitudes to women and show stronger approval for women's autonomy in abortion decision-making. Given the low internal consistency of this three-item subscale, responses to the individual items were analyzed. More males than females feel that the father should have the right to prevent the mother from having an abortion. Most of the students indicate that the woman should have to tell the father before having an abortion and most disagree that the abortion is entirely a woman's decision. There were no gender differences on the moral acceptability and availability subscales. The overall results reflect somewhat conservative attitudes to women, and seemingly contradictory findings on the abortion issue in this sample of university students. Although they endorse the availability of abortion, at the same time they find it morally unacceptable and show weak support for women's autonomy in this decision. The implications of these findings for the advancement of women's rights in this country are discussed.     

Gender Differences in Time Use Among Adolescents in Developing Countries: Implications of Rising School Enrollment Rates

This comparative analysis of gender differences in time use among adolescents uses surveys from five developing countries and is motivated by an interest in gender role socialization and gendered patterns of behavior during adolescence. Exploring differences in work (both noneconomic household work and labor market work) and leisure time among adolescents according to school enrollment status, we examine the implications of school enrollment for adolescent development. Consistent differences in time use patterns exist between students and nonstudents across a range of settings. Students spend many fewer hours than nonstudents in work activities and the type of work they do is primarily domestic. Although females carry a heavier workload and enjoy less leisure time than males during their adolescent years regardless of enrollment status, the distribution of their time and the types of activities they participate in are much more similar to their male peers when they are students.     

A contingency theory of corruption: The effect of human development and national culture

Corruption is a world-wide problem that disproportionately affects those with the fewest personal and economic resources. It was hypothesized that human development restricts corruption, and the magnitude of such an effect is contingent upon the conditions of national culture. Measures were gathered for 68 countries that account for 80% of the world's population. Support was found for the main effect of human development on corruption. Consistent with contingency theory, results also indicate that the relation between human development and corruption is moderated by power distance and individualism. Implications for policy making to reduce corruption are discussed.