Genetically Engineered Plants, Endangered Species, and Risk: A Temporal and Spatial Exposure Assessment for Karner Blue Butterfly Larvae and Bt Maize Pollen

Genetically engineered maize (Zea mays) containing insecticidal endotoxin proteins from Bacillus thuringiensis (Bt) delta-endotoxin proteins has been adopted widely in the Midwestern United States. The proteins are toxic to several lepidopteran species and because a variety of maize tissues, including pollen, may express the endotoxins, the probability of exposure to nontarget species, including endangered species, needs to be understood. The objective of this study was to assess the potential temporal and spatial exposure of endangered Karner blue butterfly larvae (Lycaeides melissa samuelis) to Bt maize pollen in Wisconsin using probabilistic exposure techniques and geographic information systems analysis. Based on degree-day modeling of butterfly phenology and maize pollen shed, there is some potential for temporal exposure of larvae to maize pollen. However, in the majority of years and locations, maize pollen shed most likely will occur after the majority of larval feeding on wild lupine (Lupinus perennis). The spatial analysis indicates that some Karner blue butterfly populations occur in close proximity to maize fields, but in the vast majority of cases the butterfly's host plant and maize fields are separated by more than 500 m. A small number of potential or existing Karner blue butterfly sites are located near maize fields, including sites in two of the four counties where temporal overlap is most likely. The exposure assessment indicates that these two counties should receive the highest priority to determine if Karner blue butterfly larvae are actually at risk and then, if needed, to reduce or prevent exposure.     

A Multistate model of fecundability and sterility

This paper develops a multistate hazards model for estimating fecundability and sterility from data on waiting times to conception. Important features of the model include separate sterile and nonsterile states, a distinction between preexisting sterility and sterility that begins after initiation of exposure, and log-normally distributed fecundability among nonsterile couples. Application of the model to data on first birth intervals from Taiwan, Sri Lanka, and the Amish shows that heterogeneity in fecundability is statistically significant at most ages, but that preexisting sterility and new sterility are unimportant before age 40. These results suggest that sterility may not be an important determinant of natural fertility until later reproductive ages.     

Homeless youths' perceptions of services and transitions to stable housing

Use of available services is low among homeless youths, and how youth make decisions to access services or seek housing is unclear. This study explored perspectives of current and former street youth about these processes. Recruited from the streets and a drop-in center, 27 youth ages 16–24, participated in individual qualitative interviews. Findings from consensual qualitative analyses indicated choices to use services were embedded within developing autonomy and identification with street lifestyles. Themes of self-reliance, substance use, and relationships with street and housed persons were expressed as critical for both using services and transitioning to stable housing. Agency-related factors such as caring staff, a nonjudgmental atmosphere, and flexible policies were perceived as important for service use while youth-related factors such as experiencing major events, being internally motivated, and embracing mainstream values were seen as conducive to transitioning off the streets. Implications for service providers and future research are discussed.     

Field Instructor Benefits in Education

This article provides a comprehensive overview of benefits awarded to agency-based social work field instructors. Findings from a national survey of undergraduate and graduate social work programs in the United States confirmed differences in the nature of benefits awarded to undergraduate and graduate field instructors. In addition, study findings revealed variations in the pattern of awarded benefits among regions and among schools of varying size. The most frequently awarded benefits included use of the library holdings or equipment, continuing education programs, and official designation as adjunct faculty member. The authors suggest that, given the current economic atmosphere, programs become more creative in their provision of benefits that are attractive but inexpensive. Moreover, the authors recommend that the profession seek to understand better what motivates field instructors.     

Sex Matters

Feminists increasingly recognize that “sex,” as a reference to embodied male–female difference, is no less socially constructed than “gender.” Like all signifiers, the meaning of these terms is produced through contingent and particular historical processes; yet histories of “how sex was made” are rare. This essay draws on extensive, multidisciplinary research – focused through a lens of early (archaic) state making – to render a partial and provisional genealogy of sex. The schematic history begins with early human social formations and the “agricultural revolution” that marked a shift from food gathering to food producing. It then reviews the defining characteristics – in particular, the invention of writing – and attendant inequalities of early/archaic state-formation (urbanization; the “rise of civilization”). The centralization of Greek city-states has particular, indeed profound, relevance for what is conventionally called the “western tradition.” The essay then directs attention to the Athenian polis, not only because it exemplifies features of early states, but because modern interpretations of classical texts and Athenian practices uniquely shaped European political theory/practice; in particular, by naturalizing hierarchies of gender, sexuality, ethnicity/race, class and national “difference.”     

Sexual Functioning Following Elective Hysterectomy: The Role of Surgical and Psychosocial Variables

In this article, two studies were conducted to investigate the surgical and psychosocial correlates of women's post-hysterectomy sexual functioning. In Study 1, sexual functioning was measured in an online convenience sample of 65 women who had undergone elective hysterectomy. Results suggested that most women experienced improved sexual functioning after their hysterectomy. Women who underwent hysterectomy to treat endometriosis reported less improvement in sexual functioning as compared to women who had hysterectomies for other indications, and women who had abdominal hysterectomies reported less improvement in sexual functioning as compared to women who had vaginal hysterectomies. Sexual functioning post-hysterectomy was associated with psychosocial variables, particularly body esteem and relationship quality. In Study 2, sexual functioning was investigated at two time points three to five months apart in a sample of 14 women who reported developing sexual problems following their elective hysterectomies. Results suggested that, among women suffering from post-hysterectomy sexual dysfunction, sexual pain and difficulty with orgasm increased over time.     

Physical Attractiveness,Halo Effects,and Social Joining

Objective: Scholarship in psychology on halo effects demonstrates the powerful effects attractiveness has on social interactions. Here, we consider the influence of physical attractiveness on the development of social capital through social joining. With the unavoidable nature of attractiveness biases, we argue that more physically attractive individuals should be increasingly likely to join social organizations, which have been shown to be important parts of broader social engagement and the growth of social capital. Methods: Utilizing the Wisconsin Longitudinal Study and an original survey experiment, we find that individuals who are rated as more attractive are consistently more likely to participate in organizations, particularly early in adult life. These effects persist when controlling for socioeconomic variables like income and education. Results: Our experimental results bolster these findings, showing that more attractive individuals are more likely to be invited to join both organizations and informal gatherings. Conclusions: These findings suggest a further mechanism through which the development of social capital differs between individuals in society.     

Turnover intention: the effects of core self-evaluations,proactive personality,perceived organizational support,developmental feedback,and job complexity

Despite extensive examination of predictors for turnover and turnover intention, most studies have focused on attitudinal and behavioural aspects of individual employees. Based on a study of knowledge workers in a Korean conglomerate, we investigated the effects of personal (i.e. core self-evaluations and proactive personality) and contextual factors (i.e. perceived organizational support, developmental feedback, and job complexity) on turnover intention. There were modestly negative but significant correlations between the contextual factors and turnover intention. In addition, core self-evaluations were found to be negatively related to turnover intention. Managers and human resource development professionals could play a pivotal role in retention of these knowledge workers by building better practices related to organizational culture, providing job redesign, and engaging in other employee developmental practices such as coaching.     

I hardly see my baby: challenges and highlights of being a New Zealand working mother of an infant

Combining motherhood and paid work presents a significant challenge for many women. We asked 2388 working New Zealand mothers of infants about their biggest highlight and challenge since the birth of their child. Thematic analysis revealed the top three reported highlights were Enjoyment of the Child (40%), Child Development (29%) and Attributes of the Child (16%). The top three challenges included Time Management (24%), difficulties with maternal role and responsibilities (21%) and work-related challenges (18%). Using logistic regression, working was more likely to be reported as a challenge by mothers who worked longer hours, returned to work when their infants were younger, had greater household incomes, or expressed concern about negative career consequences if they stayed on leave. Working was less likely to be reported as a challenge for mothers whose infants had health or developmental problems and who ‘wanted to get out of the house’. Practical implications are explored.