Assessing influence in time series

This paper studies influential observations on the spectrum of a stationary stochastic process. We introduce a leave-one-out procedure in spectral density estimation to identify influential points. A simulated envelope is proposed to assess the magnitude of influence when the data follow an autoregressive integrated moving average model. Practical illustrations are discussed in two examples.     

Understanding neighbourhoods, communities and environments: new approaches for social work research

This article discusses some new ways in which social work research can explore the interaction between neighbourhoods and child and adult wellbeing. The authors note that social work practices are often criticised for taking an individualistic approach and paying too little attention to the service user's environment. The article uses examples of research projects from Chile, the United States of America and Wales, to discuss the use of spatially oriented research methods for understanding neighbourhood factors. Quantitative, qualitative and mixed methods approaches that are particularly appropriate for investigating social work relevant topics are discussed in turn, including quantitative and qualitative uses for geographical information systems (GIS), hierarchical linear modelling (HLM) for analysing spatially clustered data and qualitative mobile interviews. The article continues with a discussion of the strengths and limitations of using spatially orientated research designs in social work research settings and concludes optimistically with suggestions for future directions in this area.     

Changes in coming out milestones across five age cohorts

This quantitative study examined differences in the coming-out process between self-identified lesbian, gay, and bisexual (LGB) participants in five age cohorts. An Internet survey and convenience sampling strategy was used to recruit 1,131 participants (ages 18 to 85). Participants provided demographic information and information about their home environment growing up, completed the Lesbian, Gay, and Bisexual Identity Scale (LGBIS) (Mohr &; Fassinger, 2000 Mohr, J. J., &; Fassinger, R. E. (2000). Measuring dimensions of lesbian and gay male experience. Measurement and Evaluation in Counseling and Development, 33(2), 66–90. [Google Scholar]), and shared ages that they achieved important milestones in the coming-out process. ANCOVA of differences between men and women in the five cohorts on the age that significant milestones were achieved resulted in significant findings for all comparisons (p < .001). In post hoc analysis, 52% of the 450 pairwise comparisons were significant at at least the .05 level. Generally speaking, two significant trends were found in this sample: (a) that the average age of achieving milestones has decreased over time; and (b) that a gender gap in the age of achieving milestones between men and women has disappeared. The current study supports and extends research that suggests a strong connection between social acceptance of LGB people and coming out at younger ages.     

Changing Attitudes to Disabled People in the Scout Association in Britain (1908-62): a contribution to a history of disability

This paper suggests that an historical analysis of attitudes to disabled people is an important but neglected area of study. Attitudes to disabled people will change over time and policy makers within organisations and the general public will be influenced by a variety of social factors. Governmental policies and legislation may prove of minor influence or trigger unexpected change in organisational attitudes. An examination of policy in the disability section of the Scout Association and its approach to disabled scouts illustrates the complexity of influences on organisational policy over time. Documentary evidence suggests that the Association was promoting integration of disabled scouts into the wider organisation during the inter war period when national policies promoted segregation. However in 1959, when major segregative legislation was repealed, there was a change of policy to exclude a particular group of disabled people-that is people with learning difficulties-from full membership.     

Web Survey Design: Paging versus Scrolling

A key choice in the design of Web surveys is whether to placethe survey questions in a multitude of short pages or in longscrollable pages. There are advantages and disadvantages ofeach approach, but little empirical evidence to guide the choice.In 2003 we conducted a survey of over 21,000 undergraduate students.Ten percent of the 10,000 respondents were directed to the scrollableversion of the survey, containing a single form for each ofthe major sections. The balance was assigned to the paging version,in which questions were presented to be visible without scrolling.The instrument contained a maximum of 268 possible questions,including topics that varied in sensitivity and desirability.The survey also permitted comparison of the effect of skip patternsby implementing skip instructions and hyperlinks in the scrollabledesign, and also recorded time at the end of each of the fivetopical sections. Differences between designs are evaluatedin terms of various forms of nonresponse, univariate and bivariatemeasurement properties, and proxies for respondent burden.     

Reordering Our Priorities by Putting Phenomena before Design: Escaping the Straitjacket of Null Hypothesis Significance Testing

In this paper we reflect on two related questions. First, how have we arrived at a position where null hypothesis significance testing is the dominant criterion employed by quantitative researchers when deciding on whether or not a result is ‘significant'? Second, how might we change the practice of quantitative management research by promoting a greater plurality of methods, and in doing so better enable scholars to put phenomena before design? We conclude by arguing that quantitative management researchers need to focus on the epistemological issues surrounding the role of scholarly reasoning in justifying knowledge claims. By embracing a plurality of approaches to reasoning quantitative researchers will be better able to escape the straitjacket of null hypothesis significance testing and, in doing so, reorder their priorities by putting phenomena before design.