Case study: musicians' playing-related injuries

Professional and student musicians are at high risk of acquiring a playing-related injury at some point in their careers. Yet, specialized healthcare for musicians is scarce and expensive for most self-employed musicians. Diagnosing these injuries is challenging, and simply taking a break from an activity that has caused physical problems does not address the ergonomic and biomechanic causes of the problem. Under these circumstances, it is not surprising that musicians are reluctant to seek care, and when they do, lack trust in the care that is provided to them. This article is a case presentation of the experiences of a graduate student musician studying performance at a North American university. A narrative style is used to reflect the quality and nature of experiences this musician encountered, followed by a discussion of how to advance a more participatory and holistic approach to enabling return to function.     

Supply Chain Inventory Replenishment: The Debiasing Effect of Declarative Knowledge

Previous experimental research demonstrates that inefficient replenishment decision making in the supply chain can be caused by specific judgment and decision biases. Based on the literature we use controlled experiments involving both student subjects and supply chain managers to test debiasing interventions that provide declarative knowledge, which is theorized to enhance the acquisition of procedural knowledge. We first investigate the effects of three debiasing components in a single‐echelon setting: knowledge of bullwhip, inventory position (IP), and use of a target order‐up‐to quantity. Experiment 1 (N = 1,608 decisions by 67 student subjects) using a 2 × 2 × 2 factorial design for the three components finds that the conceptual understanding of IP is salient for efficient replenishment decisions. We next examine the effects of the components in a simulated, multi‐echelon, serial supply chain, which introduces the additional complexity of coordination risk. Experiment 2 (N = 3,072 decisions by 128 student subjects) using a 2 × 2 × 2 factorial design finds that although subjects benefit from training components, there is evidence of cognitive overload with an increased quantity of information. Finally we test whether these debiasing components may be an effective training program for practicing supply chain managers who can be expected to have higher levels of procedural knowledge through experience gained in the field. Experiment 3 (N = 864 decisions by 36 supply chain managers) using a 2 × 1 design investigates the effects of an instructional training intervention which includes all three debiasing components and finds the intervention to reduce costs by 14%. We provide avenues for future research and successful practice.     

Examining the Impact of Demographic Factors on Air Pollution

This study adds to the emerging literature examining empirically the link between population size, other demographic factors and pollution. We contribute by using more reliable estimation techniques and examine two air pollutants. By considering sulfur dioxide, we become the first study to explicitly examine the impact of demographic factors on a pollutant other than carbon dioxide at the cross-national level. We also take into account the urbanization rate and the average household size neglected by many prior cross-national econometric studies. For carbon dioxide emissions we find evidence that population increases are matched by proportional increases in emissions while a higher urbanization rate and lower average household size increase emissions. For sulfur dioxide emissions, we find a U-shaped relationship, with the population-emissions elasticity rising at higher population levels. Urbanization and average household size are not found to be significant determinants of sulfur dioxide emissions. For both pollutants, our results suggest that an increasing share of global emissions will be accounted for by developing countries. Implications for the environmental Kuznets curve literature are described and directions for further work identified.     

Relational factors in understanding satisfaction in the lasting relationships of same sex and heterosexual couples

Satisfying relationships are important to the well-being of individuals and families. Because of increased longevity, many couples are staying together for extended periods of time. Thus, it is valuable to understand the factors that contribute to a sense of satisfaction among partners in lasting relationships. Relatively little attention has been paid in the research literature to relationships among older couples who have remained together for many years. Even less attention has been paid to the lasting relationships of couples of color and to gay male and lesbian couples. This paper focuses on understanding the factors that contribute to satisfaction of partners in the long-term relationships of a purposive sample of heterosexual and same-sex couples. Data was collected through in-depth interviews with 216 partners in 108 relationships that had lasted an average of 30 years. Using logistic regression analysis, two factors were identified as predictive of satisfaction during the recent years of these relationships: containment of relational conflict and psychologically intimate communication between partners. Based on these findings, a theoretical model for understanding satisfaction in lasting relationships is discussed.     

“TRUTH” AND “RECONCILIATION” AS SOCIAL INDICATORS

Countries throughout the world are trying to move toward a more democratic future through truth and reconciliation processes, under the assumption that truth causes reconciliation and that reconciliation contributes to democratization. But are “truth” and “reconciliation” concepts that can be measured rigorously and reliability? I present evidence in this article that each can be measured as an attribute of individuals, based on a large survey conducted in South Africa. My findings indicate that truth does indeed contribute to reconciliation. But because reconciliation is quite capable of changing (and likely to change) over time, efforts must be made to track levels of reconciliation as an important social indicator. Many countries in transition would profit greatly from implementing a Reconciliation Barometer to measure movement toward or away from the consolidation of democratic reform.     

The EPQ with partial backordering and phase-dependent backordering rate

In previous work we established a closed-form optimal stocking strategy for an EPQ model with partial backordering at a constant rate β. Here we extend this work to allow for the possibility that the percentage of demand backordered will increase when production starts again. We show how our previous model can be adapted to find the optimal decision variable values for this new assumption and develop the condition that the initial value of β must meet for partial backordering to be optimal.     

Backstage discourse and the reproduction of white masculinities

This article documents the shared patterns of private white male discourse. Drawing from comparative ethnographic research in a white nationalist and a white antiracist organization, I analyze how white men engage in private discourse to reproduce coherent and valorized understandings of white masculinity. These private speech acts reinforce prevailing narratives about race and gender, reproduce understandings of segregation and paternalism as natural, and rationalize the expression of overt racism. This analysis illustrates how antagonistic forms of “frontstage” white male activism may distract from white male identity management in the “backstage.”     

The Canadian Problem Gambling Index: An Evaluation of the Scale and Its Accompanying Profiler Software in a Clinical Setting

Across two studies we assessed the clinical utility of the Canadian Problem Gambling Index (CPGI). In Study 1, the scored items on the CPGI significantly correlated with those of the South Oaks Gambling Screen (SOGS), yet their shared variance was low. Importantly, clinician evaluation of the client’s level of pathology was more strongly associated with that revealed by the CPGI than the SOGS. In terms of utility, clinicians found the non-scored items on the CPGI more useful in treatment than those included with the SOGS. In Study 2, the effectiveness of the CPGI profiler (CPGI-P) software, which graphically depicts problematic gambling-relevant attitudes and behaviours, was assessed. Although clients had difficulties using the CPGI-P interface, they overwhelmingly indicated that the output prompted action to address their gambling. The clinicians were less enthusiastic as they felt the output did not help clients truly understand their gambling problems. Such sentiments were reiterated by the clinicians at a 6 months follow-up. The use of the SOGS and possible adoption of the CPGI (as well as the CPGI-P) in a clinical setting are discussed.     

The Social Contagion of Gambling: How Venue Size Contributes to Player Losses

The Social Facilitation Effect shows performance on many simple tasks is enhanced by crowds of onlookers or co-actors (others performing the same activity). Previous experimental research has shown that Electronic Gaming Machine (EGM) betting behavior is intensified by the belief that others are gambling along with the subject (Rockloff and Dyer, J Gambl Stud 23(1):1–12, 2007). The present study extends these findings by simulating crowds of differing sizes using a fake video-conference along with a live confederate who gambles concurrently with the subjects. Fifty-four male and 81 female subjects aged 18–82 (M = 46.9, SD = 16.7) played a laptop simulated 3-reel EGM using a $20 stake in 3 conditions: (1) alone, (2) in a simulated group of 5 persons plus 1 live confederate, or (3) in a simulated group of 25 persons plus 1 live confederate. The EGM outcomes were rigged with a fixed 20 trial winning sequence followed by an indefinite losing sequence. As hypothesised, gambling intensity, as measured by trials played, speed of betting and final payouts, was progressively greater with larger crowd sizes (P < .05). In contrast, bet-size was slightly lower with larger crowds. The results suggest that gambling venues with more players tend to increase gambling persistence and contribute to greater long term monetary losses.