The Multisurface Obstacle Test for Older Adults (MSOT): development and reliability of a novel test for older adults

Locomotion is an essential component of independence and well-being at old age. Performance deficits in the gait of older adults most often become evident on multisurface and varying terrains. Research results substantiate that falls occur in everyday movement situations that are characterized by instability. A test track, the Multisurface Obstacle Test for Older Adults (MSOT), was developed to diagnose individual performance. The 10-m track consists of different obstacles and varying surfaces, which represent everyday movement situations in a compact way. Twenty-nine untrained, healthy older adults (11 men, 18 women) were tested on three different days at 1-week intervals in a test–retest design by the same conductor. Mean age of the participants was 68.8?±?5.3 years with a mean body mass index of 24.4?±?2.5 kg/m². The measured outcome variable was the required time (seconds) on the MSOT. The feasibility for the tested sample of untrained older adults was very good. The MSOT was undertaken safely by the participants, and no falls occurred. The range of the mean for time was between 8.12?±?1.53 s and 9.00?±?1.62 s. Regarding intertrial reliability, mean differences (MD) of ?3.39 to ?5.52 % and coefficients of variation (CV) of 2.72 to 4.19 % between the first and second trials and MD of ?0.69 to ?0.85 % and CV of 2.57 to 4.54 % over the three test sessions were observed. The correlation coefficients between the sessions were .92–.98. There were significant differences (p?<?.05) between the first and second trials of each session and between the first and second sessions. The smallest detectable differences (SDD) revealed that a small improvement is enough to detect changes in performance in the MSOT. Selecting tasks from real-life situations of older adults contributes to substantiate practical usability of the MSOT. The measured time on the MSOT showed high relative and absolute reliability in the target group of older adults between 60 and 80 years.     

Veteran Status and Body Weight: A Longitudinal Fixed-Effects Approach

About 10–12 % of young men (and increasingly, women) have served a term in the military. Yet, we know relatively little about the consequences of military service for the lives of those who serve. In this article, we provide estimates of the relationship between men’s peacetime military service during the all-volunteer era (AVE) and body weight using longitudinal data on 6,304 men taken from the National Longitudinal Survey of 1979 (NLSY-79). Using fixed-effects estimators on up to 13 years of data and numerous controls for time-varying life-course characteristics linked to body weight, we find that veterans of active-duty military service have higher levels of BMI and obesity. We argue that eating habits learned during service, coupled with patterns of physical activity, lead to a situation whereby veterans making the transition to less active civilian lifestyles gain weight that is not lost over time.     

2007 North Central Sociological Association Presidential Address: Teaching and Learning and the Culture of the Regional Association in American Sociology

Abstract

In this essay, I examine the role of teaching and learning in the culture of the regional association in American sociology. I analyze the programs of (1) the 2007 joint meeting of the North Central Sociological Association (NCSA) and the Midwest Sociological Society (MSS); (2) the 2007 annual meeting preliminary programs of the Eastern Sociological Society (ESS), the Pacific Sociological Association (PSA), and the Southern Sociological Society (SSS) along with the 2006 annual meeting programs of the MSS and NCSA, as well as the American Sociological Association (ASA); and (3) the 1991 NCSA and 1992 ASA annual meeting programs. I identify program trends with regard to teaching, professional development, undergraduate students, graduate students, and research on higher education. I conclude by identifying regional association annual meeting best practices regarding each of these areas.     

Taking Pressure Off Families: Child‐Care Subsidies Lessen Mothers’ Work‐Hour Problems

We use the Philadelphia Survey of Child Care and Work to model the effect of child‐care subsidies and other ecological demands and resources on the work hour, shift, and overtime problems of 191 low‐income urban mothers. Comparing subsidy applicants who do and do not receive cash payments for child care, we find that mothers who receive subsidies are 21% less likely to experience at least one work hour–related problem on the job. Our results suggest that child‐care subsidies do more than allow women to enter the labor force. Subsidies help make it easier for mothers in low‐wage labor both to comply with employer demands for additional work hours and to earn the needed wages that accompany them.     

‘Did you see that,Mom?’: Social Looking in Three‐Year‐Old Boys

This study examined social looking, defined as child‐initiated looking to a caregiver's face, in a sample of three‐year‐old boys and their mothers: 59.6% of boys looked to their mothers at least once over the course of emotion‐eliciting puppet show vignettes. Social looking occurred more often during puppet show events that were child‐focused and positive in valence. Boys’ social looking was related to their concurrent affective state, with more expressions of positive emotion looking associated with more social looks. Patterns of family emotionality predicted children's use of social looking. Specifically, a history of positive family expressiveness was associated with children's less frequent use of social looking, whereas a history of negative family expressiveness was associated with children's more frequent use of social looking.     

Union density effects in the supermarket industry

Unions provide higher than competitive wages for members, but their effect on non-union wages is not clear. We investigate the effect of union density on supermarket wages from 1986 to 1993, a period of declining real wages and declining union membership. Full-information maximum likelihood techniques are used to estimate log wage equations for both the union and nonunion sectors. Decomposition techniques then separate the union wage premium into the relative effects of densities and union membership. We find a significant, positive effect of union density for both union and nonunion employees. This effect explains approximately one-third of the union-nonunion wage differential. This research was conducted while Johansson was a graduate research assistant at the University of Minnesota.     

Do Residential Conditions Explain the Relationship Between Living Arrangements and Adolescent Behavior?

Persistent effects of childhood living arrangements and family change on adolescent outcomes have often been attributed to differences in socialization and intrafamily processes. We use data from the Panel Study of Income Dynamics to assess an alternative explanation: that neighborhood context and residential mobility represent a central set of mechanisms through which family structure affects adolescent risk behavior. Our results indicate that the effects of childhood living arrangements and family change on the risk of dropping out of school (n = 8,267) and of experiencing a premarital teen pregnancy (n = 6,063) are largely attenuated when differences in the level of neighborhood disadvantage and the number of residential moves experienced by adolescents is taken into account.     

Risk Management and the Business Environment in South Africa

Risk management involves tracking market and non-market long-range risks, understanding their adverse impact on the business environment, and managerial responses to reduce risk exposure. As an emerging market, South Africa poses a challenging array of long-term political, economic, financial and operational risks to investors. Risks such as concerns about increased costs, lack of transparency, limited capacity to enforce the rule of law, government intervention, a volatile currency, regional contagion and the HIV/Aids pandemic heighten uncertainty about the business environment. Managerial responses to anticipate and mitigate risks include matching mode of entry with risk tolerance, superior intelligence and lobbying, maintaining low tolerance for corruption, selecting appropriate financial instruments and balancing shareholder and stakeholder interests.The risk management framework presented, consisting of three elements: type of risk, impact of risks and managerial response to counter adverse risk impacts, may be refined and expanded for potential application to other emerging markets.