Behavior of agreement measures in the presence of zero cells and biased marginal distributions

Kappa and B assess agreement between two observers independently classifying N units into k categories. We study their behavior under zero cells in the contingency table and unbalanced asymmetric marginal distributions. Zero cells arise when a cross-classification is never endorsed by both observers; biased marginal distributions occur when some categories are preferred differently between the observers. Simulations studied the distributions of the unweighted and weighted statistics for k=4, under fixed proportions of diagonal agreement and different patterns off-diagonal, with various sample sizes, and under various zero cell count scenarios. Marginal distributions were first uniform and homogeneous, and then unbalanced asymmetric distributions. Results for unweighted kappa and B statistics were comparable to work of Muñoz and Bangdiwala, even with zero cells. A slight increased variation was observed as the sample size decreased. Weighted statistics did show greater variation as the number of zero cells increased, with weighted kappa increasing substantially more than weighted B. Under biased marginal distributions, weighted kappa with Cicchetti weights were higher than with squared weights. Both statistics for observer agreement behaved well under zero cells. The weighted B was less variable than the weighted kappa under similar circumstances and different weights. In general, B's performance and graphical interpretation make it preferable to kappa under the studied scenarios.     

Making Inter-country Comparison of Life Expectancy Inequality Sensitive

Two populations with the sameoverall longevity but different age andage-specific-mortality profiles may produce avariety of differences in terms of issues thatare relevant for development policy. A simplemethod of comparing countries has beensuggested in this paper, which is sensitive tosome of these differences that are usuallyhidden under life expectancy figures. In theprocess, some of the recent attempts inadjusting life expectancy for `inequality' havebeen critically examined.     

Sex differences in observers' reactions to a nurse's use of touch

We tested the notion that male and female observers would have different reactions to the use of touch by a nurse towards a patient in a hospital situation. If males are socialized to favor autonomy and independence and females to favor nurturance and caring, it was assumed that male subjects would rate a nurse as less supportive and competent if a nurse touched a patient. The results (based on reactions to photographs manipulating the level of physical contact that occurred between a nurse and a patient) were generally consistent with these predictions. While the subjects' sex moderated reactions to the nurse-initiated touch, there was an overall pattern for observers to react more favorably to the nurse who used touch compared to no touch in interacting with a patient. The results suggest that nurses and health professionals who use touch in interacting with patients may be judged in part by the attitudes of males and females about the use of touch.     

Student Advising in Social Work Education

Abstract

It is likely that social workers' involvement with rehabilitation services for the handicapped will increase. An understanding of the philosophical foundation of such services may be especially relevant now as social work education appears to renew its commitment to the study of ethics and values in society.     

Partial Effects in Ordered Response Models with Factor Variables

Interpretation in nonlinear regression models that include sets of dummy variables representing categories of underlying categorical variables is not straightforward. Partial effects giving the differences between each category and the reference category are routinely computed in the empirical economics literature. Yet, partial effects yielding the differences between each category and all other categories are not calculated, despite having great interpretative value. We derive the correct formulae for calculating these partial effects for an ordered probit model. The results of an application using data on subjective well-being illustrate the usefulness of the alternative partial effects.     

OPTIMAL ENFORCEMENT OF NONCOMPETE COVENANTS

Noncompete covenants or covenant not to compete (CNC) are clauses in employment contracts in which the employee agrees not to gain employment with a competitor firm. In this article, we study the efficiency aspects of such contracts by incorporating the effect of labor mobility restrictions on knowledge transfer across firms, investment decisions by firms, and investment by workers. Following research that shows state‐wise variations in the degree of CNC enforcement, we allow the strength of CNC enforcement to vary as a matter of regulatory policy and derive the optimal strength of enforcement. We also look at how regulations around CNCs should be optimally designed when employers can use collusive agreements, such as “no poaching” agreements, as an alternative to noncompete clauses. Given recent allegations of employer collusion among large Silicon Valley firms, we argue for a cautious approach in designing policies on CNC enforcement. (JEL J24, J41, J63, K31)     

Style and Language Use among Youth of the New Immigration: Formations of Race,Ethnicity, Gender,and Class in Everyday Practice

In this article I consider “style” as a linguistic and cultural concept that can demonstrate how identities performed through language use are linked to topics of central concern in studies of immigrant youth, including racial and ethnic formation, generational cohorts, acculturation, assimilation, and gender. I draw on anthropological and sociolinguistic approaches to style not generally considered in migration studies and present ethnographic data of two cliques of Desi (South Asian American) teens in a Northern California high school. I argue that analyses of youth style can substantially complicate assimilation frameworks by highlighting the ways in which young peoples' linguistic practices may not fit neatly into commonly used analytical categories of “immigrant” and “American.” Focusing on how political economy and local histories inform power and difference that shape migration experiences for youth, the article moves beyond routinely examined areas of heritage language retention and loss to analyze the significance of youth performances of heritage languages as well as English.     

Disaster Relief Within a Collectivistic Context

Abstract

Until recently, most research on catastrophic events has focused on human outcomes with limited exploration of related adaptational processes. The little knowledge we have is based upon events occurring in the western world, despite the higher frequency of disasters in the nonwestern world. This study examines the cultural context of coping among survivors of the 2004 tsunami in Tamil Nadu, India. A non-probability, purposive sample of ten emergency responders, who represented a broad range of professions and were directly involved with relief efforts along the coast of South India, were interviewed individually one year after the tsunami. Data were collected using a semi-structured interview format with open-ended questions. Consistent with the collectivistic culture in India, content analysis was conducted using the Listening Guide methodology. Interpretive analysis revealed five common ways of coping: (1) returning to routine, (2) rebuilding family structures, (3) communal sharing of resources, (4) emotional expression of grief and loss to a supportive listener, and (5) finding benefits from the disaster experience. While these coping efforts may generally appear to be universal among people experiencing a natural disaster, findings reveal key aspects of the collectivistic cultural context of southern India. Discussion of the findings presents a compelling case for in-depth training of disaster responders in cross-cultural practice in order to effectively address the needs of survivors of mass level trauma.     

Selection of logistics service provider: An analytic network process (ANP) approach

This article presents a comprehensive methodology for the selection of a logistic service provider. The proposed methodology consists of two parts: (i) preliminary screening of the available providers, and (ii) analytic network process (ANP)-based final selection. The criteria, which are relevant in the selection of a provider, have been identified and used to construct an ANP model. Thereafter, the application of ANP for the final selection of a provider has been demonstrated through an illustrative example. The results of this example indicate that compatibility between the user and the provider companies is the most important determinant, which influences the final selection process. This approach also enables the decision-makers to better understand the complex relationships of the relevant attributes in the decision-making, which may subsequently improve the reliability of the decision.