Shewhart x-charts with estimated process variance

Properties of the Shewhart X-chart for controlling the mean of a process with a normal distribution are investigated for the situation where the process variance Ó²must be estimated from initial sample data. The control limits of the X-chart depend on the estimate of Ó²and thus, unlike the case when Ó²is known, the X-chart is not equivalent to a sequence of independent tests. When Ó²is estimated the distribution of the run length is not geometric and cannot be characterized simply in terms of the probability of a signal at a given point. The average run length (ARL) for the X-chart is expressed in terms of an integral involving the normal cdf, and it is shown that the chart signals with

probability one, but the ARL may not be finite if the size of the 2 sample used to estimate Ó²is sufficiently small. In addition, certain bounds for the ARL are also derived. Numerical integration is use to show that the effect of using small sample sizes in estimating Ó²is to increase the ARL and the variance of the run length distribution     

Treatment of narcissistic and borderline disorders in marital therapy: Suggestions toward an enhanced therapeutic approach

This paper examines a psychodynamic model of marital therapy that has been found to be useful when one or both partners suffer from disorders of the self. The theories of Heinz Kohut and recent self psychologists give insight into ways of understanding and treating each partner's narcissistic vulnerabilities. Some specific aspects of borderline and narcissistic disorders are described and discussed within the context of a marital relationship. This method of marital therapy not only helps couples to learn how to be selfobjects for each other, but also may facilitate rebuilding of damaged structures of the self. A case example is provided along with a discussion of why certain specific therapeutic interventions were made.I have no hesitation in claiming that there is no mature love in which the love object is not also a selfobject. Or, to put this depth-psychological formulation into a psychosocial context: There is no love relationship without mutual, self-esteem enhancing, mirroring and idealization (Kohut, 1977, p. 122).     

A physician's view from the Hill

Rarely do physicians have the opportunity to participate in our political system on a day-to-day basis. The Robert Wood Johnson Health Policy Fellowship, a one-year program for mid-career medical professionals, provides just such an experience. The Fellows begin with a two- to three-month orientation phase before selecting a congressional work assignment. As a member of a congressional staff, a Fellow has the opportunity to learn from, as well as contribute to, the legislative process. The health policy experience provides another tool to complement the clinical and management expertise of the physician executive.     

Species-specific facilitation shapes primary successional communities under nurse trees in an abandoned slag dump

Urban Ecosystems - Facilitation by nurse plants shapes community development during primary succession. Human activity—especially in urban settings—has created environments like...     

Developmental Change in Infants' Detection of Visual Faces that Match Auditory Vowels

Infants demonstrate robust audiovisual (AV) perception, detecting, for example, which visual face matches auditory speech in many paradigms. For simple phonetic segments, like vowels, previous work has assumed developmental stability in AV matching. This study shows dramatic differences in matching performance for different vowels across the first year of life: 3‐, 6‐, and 9‐month‐olds were familiarized for 40 sec with a visual face articulating a vowel in synchrony with auditory presentations of that vowel, but crucially, the mouth of the face was occluded. At test, infants were shown two still photos of the same face without occlusion for 1 min in silence. One face had a static articulatory configuration matching the previously heard vowel, while the other face had a static configuration matching a different vowel. Three auditory vowels were used: /a/, /i/, and /u/. Results suggest that AV matching performance varies according to age and to the familiarized vowel. Interestingly, results are not linked to the frequency of vowels in auditory input, but may instead be related to infants' ability to produce the target vowel. A speculative hypothesis is that vowel production in infancy modulates AV vowel matching.     

International Well-being Index: The Austrian Version

The International Well-being Index (IWI) measures both personal and national well-being. It comprises two subscales: the Personal Well-being Index (PWI) and the National Well-being Index (NWI). The aim of this paper is to test the psychometric properties (validity and reliability) of the translated scale in Austria. Convergent validity is assessed using the Scales of Psychological Well-Being, the Satisfaction with Life Scale and the Positive and Negative Affect Scale. In addition, a Visual–Analog Scales capturing “satisfaction with life as a whole” was applied. The participants were 581 students of the Medical University Innsbruck (female: 47.7%; age: 23.2 ± 3.7). Internal consistency (Cronbach’s α) of the IWI was for both scales > .70 (PWI: .85; NWI: .83). The exploratory factor analysis of the IWI identified a 2-factor-structure identical with the two scales of the IWI explaining 54.2% of the variance. The convergent validity hypotheses were confirmed, construct validity was partly confirmed for the PWI being a deconstruction of a first factor called “satisfaction with life” (38.1% explained variance). Happy participants scored higher on the PWI (84.3 ± 7.9 vs. 68.7 ± 13.7; p < .001) and NWI (64.3 ±  15.8 vs. 57.9 ±  15.1; p < .001) scores than unhappy participants. It is concluded that the Austrian version of the IWI is a reliable and valid instrument to assess personal and national well-being. Further studies including a representative sample should be carried out on a recurring basis to use the IWI as an indicator for social science research in Austria.     

Food for feminist thought

Women's relationship with food on a daily basis is contradictory and problematic. Women are expected to deny themselves food in order to remain sexually attractive and, at the same time, they have to feed their partners and children with healthy and nutritious meals. The power of ideologies equating sexual attractiveness with slimness means that most women are not happy with their body image. This dissatisfaction is reinforced by the comments of men, particularly their partners. Food, as well as being a‘fattening’enemy is a comfort and is resorted to at times of emotional stress. Women's‘normal’relationship with food lies on a continuum of which the eating disorders are the extremes and is a product of their structural position in society.     

The impact of the family on home-based work

This article reports on a study of 899 families with at least one member engaged in home-based work. Six work characteristics are examined in relation to family structure and gender of the home-based worker: business ownership, occupation of the home-based work, amount of income generated, location of the work space, number of hours worked, and availability of help with the work. Women in single-parent and full-nest families are found to do the most restructuring of work time and space and women home-based workers generate less income from the work than do men. Male home-based workers experience less conflict between family and work scheduling, are more likely to have an exclusive work space, and tend to have help with the home-based work.This article reports results from the Cooperative Regional Research Project, NE-167, entitled, At-Home Income Generation: Impact on Management, Productivity and Stability in Rural and Urban Families, partially supported by Cooperative States Research Service, U.S. Department of Agriculture and the Experiment Stations at the University of Hawaii, Iowa State University, Lincoln University (Missouri), Michigan State University, Cornell University (New York), The Ohio State University, The Pennsylvania State University, Utah State University and University of Vermont.Her research interests include divorce, work and family, and the economic well-being of women and children. She received her Ph.D. from Oregon State University.He has extensive experience in research, consulting, and training for small business owners and operators, including single parents, disabled veterans, Hispanics, rural and home-based. He received his Ph.D. from New York University.     

Digitalization and Promotion: An Empirical Study in a Large Law Firm

In law firms, the number of hours that associates work reportedly plays a preponderant role in promotion decisions. We build on previous research in this area by distinguishing the effect of ‘development hours’ from ‘billable hours’ on promotions and by assessing the extent to which billable hours are still important criteria today, in digitalized environments where efficiency is, presumably, likely to matter more than working long hours. We also examine whether certain types of behaviours, like associates' interactions with technology, may be associated directly or indirectly with a higher likelihood of promotion. We studied these questions in the context of a large corporate law firm in continental Europe, focusing on the promotion of 93 lawyers between 2005 and 2010. We found that both billable and development hours are still significant positive predictors of promotions and that associates' ability to use the case firm's computer‐mediated knowledge management system productively is indirectly rewarded by promotion. This research reasserts the fundamental role of billable hours as one of the primary means for evaluating lawyers' work and suggests that using knowledge management systems gives associates an edge in the race for promotion, particularly in law firms moving along the ‘evolutionary path’ of legal service, from bespoke to commoditized work (Susskind, R. (2010). The End of Lawyers? Rethinking the Nature of Legal Services. Oxford: Oxford University Press).     

Assessing grief and bereavement: observations from the field

The purpose of this article is to describe the evaluations involved in the Yale Bereavement Study (YBS), a three-year NIMH and NCI-funded longitudinal study conducted from January 2000 through May 2003. The quantitative and qualitative questions included in the YBS gave the respondents an opportunity to describe their most recent loss, rate and review their past losses, and assess all aspects of their current life situations. In this article, the first author describes, in a qualitative manner, the ways in which this assessment, per se, appeared helpful and not harmful to the respondents. Also, developed here is the implication for potential application of a modified version of the YBS which could be used in both research and clinical practice.