Bivariate pointing movements on large touch screens: investigating the validity of a refined Fitts' Law

On the basis of three empirical studies Fitts' Law was refined for bivariate pointing tasks on large touch screens. In the first study different target width parameters were investigated. The second study considered the effect of the motion angle. Based on the results of the two studies a refined model for movement time in human-computer interaction was formulated. A third study, which is described here in detail, concerns the validation of the refined model. For the validation study 20 subjects had to execute a bivariate pointing task on a large touch screen. In the experimental task 250 rectangular target objects were displayed at a randomly chosen position on the screen covering a broad range of ID values (ID= [1.01; 4.88]). Compared to existing refinements of Fitts' Law, the new model shows highest predictive validity. A promising field of application of the model is the ergonomic design and evaluation of project management software. By using the refined model, software designers can calculate a priori the appropriate angular position and the size of buttons, menus or icons.     

Examination of computer task exposures in radiologists: a work systems approach

Radiologists are intensive computer users as they review and interpret radiological examinations using the Picture Archiving and Communication Systems (PACS). Since their computer tasks require the prolonged use of pointing devices, a high prevalence of Musculoskeletal Disorders (MSDs) is reported. The first phase of this study involved conducting a Cognitive Work Analysis in conjunction with a Participatory Ergonomics approach to perform a total work system analysis. We also conducted an ergonomic survey as well as collected computer use data, specifically for the mouse and keyboard. The goal of the study was to reduce the physical exposures for radiologists. This paper presents Phase I results describing the analyses and redesign process of the radiologists tasks, training design, computer use, and selected survey results.     

Family relationships and troubled sleep among U.S. adults: examining the influences of contact frequency and relationship quality

Sleep is essential for health and daily functioning, and social relationships may be a key social factor influencing sleep, yet sleep has been understudied in the literature on social relationships and health. This study used data from the National Survey of Midlife Development in the United States to examine associations between troubled sleep and family contact, social support, and strain. Results show that having strained family relationships is associated with more troubled sleep, while supportive family relationships are associated with less troubled sleep. Family strain is more consequential for sleep than support, and sleep troubles are greatest when family relationships are highly strained and provide inadequate emotional support. Family strain is also more harmful to sleep among individuals who are in frequent contact with family members. These findings underscore the importance of focusing on both negative and positive aspects of relationships and highlight the significance of family relationships for sleep.     

An evaluation of immediate outcomes and fidelity of a drug abuse prevention program in continuation high schools: project towards no drug abuse (TND)

The present study provides an implementation fidelity, process, and immediate outcomes evaluation of Project Towards No Drug Abuse (TND), a drug prevention program targeting continuation high school youth (n=1426) at risk for drug abuse. A total of 24 schools participated in three randomized conditions: TND Only, TND and motivational interviewing follow-up, and no treatment control. Fidelity was high: across program schools the curriculum was implemented as intended and was received favorably by students. Relative to controls, intervention conditions produced effects on hypothesized mediators, including greater gains in program related knowledge, greater reductions in drug use intentions, and positive changes in motivation. However, few generalizations to attitudes and intentions regarding risky sexual behavior were found. The pattern of results suggests that the experimental manipulations worked as intended.     

Men's psychological functioning in the context of women's breast cancer

Previous research indicates that men are affected when their female partners have breast cancer. However, little is known about what predicts men's psychological well-being in this context. The current investigation involved couples in which the woman had early stage breast cancer and explored the degree to which men's positive and negative well-being was related to women's well-being, women's physical symptoms, relationship functioning, and relationship duration. The findings indicate that all of these factors play a role and interact in predicting men's well-being. In particular, when women have a high level of physical symptoms, the typical associations between men's well-being with women's well-being and relationship adjustment no longer persist. Implications for working with couples addressing health problems are provided.     

Social Work Students ‘Juggling’ Field Placement

Field education is widely acknowledged as a central component of social work education. However, it requires a substantial commitment of time and energy from students which can present challenges to students who have multiple responsibilities. Based on a literature review conducted in preparation for doctoral research into social work student experience of juggling multiple roles and responsibilities with field placement, this article summarises what is known about the challenges they face and what helps them to complete placement. The findings have implications for students, schools of social work and field placement agencies. Further research should provide guidance for professional social work bodies, schools of social work, field educators and students.     

Do Regional Associations Meet the Career Needs of Teacher-Scholars?

Faculty members in tenure-track positions must demonstrate proficiency in teaching and scholarship, although different types of higher education institutions carry different sets of expectations and requirements in these areas. Teacher-scholars, who integrate teaching and research through diverse means, largely work at teaching focused institutions. Even in such teaching-focused institutions, however, there has been a growing demand for faculty to have high levels of scholarly productivity, typically in the form of peer-reviewed publications and conference presentations...At the same time, teacher-scholars, due to limited resources, do not have great access to national conferences, leading them to rely more heavily on regional conferences to display their scholarly work. This study examines the utility of regional associations in meeting the career needs of teacher-scholars. Examining conference programs from the Pacific Sociological Association for five recent years, and comparing them to the national conference (the American Sociological Association) we show that teacher-scholars rely heavily on regional conferences to highlight their successes, often extending beyond scholarship. Regional conferences also offer a more flexible program than the national conference for defining the work of teacher-scholars. While teacher-scholars and Ph.D. granting faculty alike engage at both the national and regional conferences, both conferences tend to perpetuate a hierarchy of academia that emphasizes more traditional standards of scholarly success.