Efficiency of t-Test and Hotelling's T 2-Test After Box-Cox Transformation

Early investigations of the effects of non-normality indicated that skewness has a greater effect on the distribution of t-statistic than does kurtosis. When the distribution is skewed, the actual p-values can be larger than the values calculated from the t-tables. Transformation of data to normality has shown good results in the case of univariate t-test. In order to reduce the effect of skewness of the distribution on normal-based t-test, one can transform the data and perform the t-test on the transformed scale. This method is not only a remedy for satisfying the distributional assumption, but it also turns out that one can achieve greater efficiency of the test. We investigate the efficiency of tests after a Box-Cox transformation. In particular, we consider the one sample test of location and study the gains in efficiency for one-sample t-test following a Box-Cox transformation. Under some conditions, we prove that the asymptotic relative efficiency of transformed t-test and Hotelling's T ²-test of multivariate location with respect to the same statistic based on untransformed data is at least one.     

Expanding the Reflexive Space: Resilient Young Adults,Institutional Cultures,and Cognitive Schemas

For many U.S. young adults, being resilient to stressful events hinges on making meaning of such events and thereby minimizing their negative emotional impact. Yet why are some better able to do this than others? In this study, which uses an innovative outlier sampling strategy and linked survey and interview data, we argue that one important factor is connection to institutional cultures associated with higher education, religion/spirituality, and the military. Such cultures provide material for the development of cognitive schemas that can be adopted and applied to their stressful experiences, which include narratives of social progress, divine providence, and self‐discipline. Using a metaphor adapted from the pragmatist philosopher Charles Sanders Peirce, we argue the resulting schemas have the effect of “expanding the space” of reflexive thought, providing new cognitive material for interpreting stress and supporting resilience. Finally, we argue this framing improves in several ways on the concept of meaning making often used in stress process research.     

(Re)visualizing women who use drugs

This article explores a collaborative, community-based project that fuses both arts-based feminist and visual sociological perspectives through a collaboration with five women in leadership roles in a drug user union, Vancouver Area Network of Drug Users (VANDU). VANDU is situated in the Downtown Eastside of Vancouver, British Columbia, in Canada’s poorest urban neighbourhood. Through writing, photography and collage-making, participants in this study resisted dominant representations of women who use criminalised drugs by focusing on activism, family, friends and the spaces they live and work in. This paper contributes to a growing body of critical and feminist scholarship interested in using creative and visual methodologies and collaborative community artworks as tools for developing alternate perspectives about the lives of marginalised women.     

Outcomes focused user involvement in social work education: applying knowledge to practice

Abstract

This paper discusses an innovative approach connecting service user and carer involvement (SUCI) in social work education to social work practice. The research team, comprised service users, carers, social work students and module leader, worked collaboratively democratising the research process. At the University of Dundee, a core social work module facilitates students to spend 15 h with a service user and/or carer (host) gaining a unique insight into their everyday lives. During this time, hosts and students discuss two policy practice questions, responses to these questions are generating annual qualitative data, with study findings being disseminated at local and national level. The experiential learning students acquire from spending time with their host becomes the site of knowledge creation through involvement that is applied to practice. This paper reports on the narratives emerging from the longitudinal data (2012–2015, n = 90) on the changing landscape of social care in Scotland and the dissemination of project findings. We explore the intersection where the voices of service users and carers, student learning and social work practice coalesce. A model of outcomes focused SUCI is introduced as a template for meaningful, sustainable and outcomes-focused SUCI in social work education.     

“You Bring Great Masculinity and Truth”: Sexuality,whiteness, and the regulation of the male body in motion

This study contributes to analyses of how heterosexuality and whiteness work together in the embodied social practice of dance and the representational realm of television. It does so by attempting to destabilize theories of sexual difference dependent upon the concept of a stable, “natural,” and unitary body by highlighting the representational work that underpins heteronormative (white) masculinity within the first season of the syndicated reality dance television series So You Think You Can Dance Canada. The paper argues that though the presence of male dancers in the (often feminized) representational realm has the potential to challenge simple heteronormative dichotomies of masculine/feminine, reality dance television in this case plays with, yet ultimately reaffirms, heteronormative masculinity and does so relationally, through the juxtaposition of racialized male and female dance contestants over the span of a series. While it is not surprising that a reality show depends heavily upon heteronormative stereotypes, these discursive mechanisms are rendered invisible, in this case, when couched in a discourse of authenticity, technical ability, and dance aesthetics, resonating beyond the context of television, into the ways we think about dance practice.     

Working‐Class Jobs and New Parents' Mental Health

Little research has explored linkages between work conditions and mental health in working‐class employed parents. The current study aims to address this gap, employing hierarchical linear modeling techniques to examine how levels of and changes in job autonomy, job urgency, supervisor support, and coworker support predicted parents' depressive symptoms in a sample of 113 dual‐earner couples interviewed five times across the transition to parenthood. Increases in job autonomy and decreases in job urgency predicted fewer depressive symptoms in fathers at 1 year postpartum. For mothers, coworker support predicted fewer depressive symptoms, and supervisor support mitigated the negative effects of job urgency on depressive symptoms. Higher work hours coupled with low job urgency predicted declines in mothers' depressive symptoms across the first year of parenthood. Our findings suggest that interventions that lead to greater autonomy, less job urgency, and more supportive work relations may enhance employee well‐being among working‐class families.     

The Upside to Hooking Up: College Students’ Positive Hookup Experiences

Objectives: Popular media and research have predominately focused on the risks of hooking up, which may stigmatize young people. In the current study, we identify factors that facilitate positive hookups. Methods: College students (N = 250) in the United States reported hookup motives, sexual self-concept, sexual satisfaction, and emotional reactions to a hookup. Results: Emotional reactions were more positive than negative. Intimacy and pleasure motives predicted sexual satisfaction; self-affirmation motives predicted positive emotional reactions. Hookups with a previous partner were rated as more satisfying. Conclusions: Understanding qualities associated with positive hookups may better equip young adults to make informed decisions about their sexual lives.     

Psychosocial correlates of recreational ecstasy use among college students

College students' ecstasy (MDMA) use increased significantly in recent years, yet little is known about these students. In this study, the authors used the Center for Alcohol and Other Drug Studies (CORE) survey to compare 29 college students who had used ecstasy and other illicit drugs with 90 students who had used marijuana and no other illicit drugs. They noted differences in age, frequency of alcohol and marijuana use, average age of onset of marijuana use, frequency of negative consequences associated with substance use, perceptions of peer norms' drug use, perceived peer acceptance of substance use, and risk perception of substance use. When they entered polysubstance use as a covariate, many of these correlates became nonsignificant. The authors suggest that college ecstasy initiators may be a cohort of marijuana users who tend to engage in multiple risk-taking behaviors. This study serves as a preliminary effort to better understand college students who use ecstasy recreationally.     

Color-blind Ideology and Perceptions of Minority Children During a Fictionalized Parent-Child Discipline Scene

Belief in color-blind ideology among 200 social service providers and its associations with their evaluations of a fictionalized minority family were examined. Perceptions of the family in the first scenes of the movie Crooklyn included the mother’s competency, abusiveness, supportiveness, and irresponsibility, as well as her children’s respectfulness, obedience, lack of control, and aggressiveness. Color-blind ideology was operationalized as participants’ reported degree of belief that differences should be ignored when encountering others. Significant associations were found between degree of belief in ignoring differences and perceptions of the children as aggressive and out of control. Therefore, as the tendency to believe in ignoring differences increased, the tendency to see the Crooklyn children as aggressive and out of control also increased. Imposing color-blind ideologies when evaluating minority children may be associated with increasingly negative perceptions, and therefore may not be in the children’s best interest. Implications for improving social service provision also are discussed.