The Market Response to the Sioux City DC-10 Crash

The 1989 DC-10 crash at Sioux City, Iowa presented a rare instance in which a potential threat to safety was both (i) intensely publicized over a short period and (ii) also amenable to the unobtrusive measurement of the market reaction it evoked. As such, it allowed a useful case study of the extent and duration of behavior change caused by a frightening event. Using reservations data from travel agencies in five states, this paper estimates the short-term effects of the Sioux City crash on passenger willingness to fly the DC-10. The data suggest that, in the first few weeks after the crash, more than one third of travelers who would normally have booked DC-10 flights chose instead to fly other aircraft. Within 2 months of the disaster, however, DC-10 bookings rebounded to within 10% of the level that would have been expected had the Sioux City crash not occurred. At no time, apparently, did the airlines that operate DC-10s use their "yield-management" computer pricing systems unofficially to lower DC-10 fares relative to those on other types of plane.     

Work‐Family Enrichment and Conflict: Additive Effects,Buffering, or Balance?

We used data from the Midlife Development in the United States (MIDUS I) (N = 2,031) to compare three models of how work‐family conflict and enrichment might operate to predict well‐being (mental health, life satisfaction, affect balance, partner relationship quality). We found no support for a relative‐difference model in which the conflict‐enrichment balance predicted outcomes. In the work‐to‐family direction, the additive model fit best: Both work‐to‐family conflict and work‐to‐family enrichment were independently linked to outcomes. In the family‐to‐work direction, the interactive model fit best: Family‐to‐work enrichment buffered the negative outcomes ordinarily linked to family‐to‐work conflict. Enrichment is key because with the additive model, it contributed incremental explanatory power, and with the buffering model, it conditioned conflict‐outcome relationships. Work‐to‐family conflict and family‐to‐work enrichment appeared particularly salient for well‐being.     

Incorporating natural helpers to address service disparities for young children with conduct problems

In response to the high levels of unmet need among historically underserved young children with conduct problems, this paper outlines some of the key issues involved in incorporating natural helpers into the delivery of parenting interventions for the treatment of conduct problems among historically underserved children. Strategies for the selection and training of natural helpers are discussed along with challenges that might be encountered in these processes. Directions for future research are also highlighted. With appropriate selection and training procedures in place, natural helpers may increase the accessibility of services for children and families and foster the reduction of service disparities.     

DETECTION AND TESTING OF DIFFEFENT TYPES OF OUTLIER IN LINEAR STRAUCTURAL RELATIONASHIPS

The linear structural model provides one way of modelling a linear relationship between two random variables. It is well known that problems of unidentifiability arise for unreplicated observations and normal error structure. As in all data sets, outliers can arise and methods are needed for detecting and testing them. An outlier-generating model of mean–slippage type can be used to characterise four different forms of outlier manifestation. It is interesting to find that the unidentifiability problem provides no obstacle for detecting or testing the outliers for three of the four forms. Detection principles, and specific discordancy tests, are derived and illustrated by application to some data on physical measurements of Pacific squid.     

A multiple goal methodology for evaluating management information systems

The behavior and performance of an organization are intimately tied to the mode and effectiveness of its information processing function. While there is a rapidly expanding level of research concerned with the design, development, and implementation of management information systems (MIS), relatively few approaches to the evaluation and improvement of these systems have been suggested. The current paper develops a multiple goal methodology aimed at filling this gap by evaluating and, if necessary, subsequently modifying any given set of MIS design variables considered capable of enhancing a series of operational and, perhaps, conflicting goals. The methodology is based on a series of significant findings from the MIS design literature. In particular, the procedure incorporates the tripartite of decision type/decision-maker/MIS design into the evaluation process. The methodology is user-based, being flexible with respect to the definition of performance objectives, evaluation measures, design variables, and correction strategies. A brief example applies the methodology to the evaluation of an MIS within a health services organization.     

A new role for ambulatory care: managing the system

Buffeted for many years by the winds of financial pressures, the American health care system is in severe disarray. The major components of this system are expending resources on maintaining their traditional roles in order to serve a public that cannot afford all of them. These elements, namely the hospital industry, the insurance industry, and physicians, are trying to achieve a measure of profitability in a system that seems to have little profit to yield. Perhaps the time has arrived for a restructuring of the basic system in order to reward quality and efficient management rather than to perpetuate systems becoming increasingly irrelevant.     

A physician's perspective on capitation

Change is not on the horizon; it is already here. Capitation is only the latest form of competition with which we physicians have dealt through high school, college, medical school, postgraduate training, and even entry into practice. Capitation is a reality. It is here to stay. It will not disappear. It is a concept that must be understood, embraced, and managed to ensure financial survival. Physicians face issues of life and death on a daily basis. It is not too much for them to handle capitation.     

Association between sex,race/ethnicity,season, day of week,and alcohol use and related risks in college student athletes and nonathletes

Objective: To examine personal and social constructs (eg, sex, race) and external influences (ie, competition schedules) that are associated with the pattern and amount of alcohol consumption by student athletes compared to nonathletes. Participants: Students (n?=?2,984; 57% female, 61% white, 16% athlete) on a single campus were surveyed in Fall 2011 and Spring 2012. Methods: Anonymous surveys included demographics, alcohol use, and related problems. Results: Student athletes consumed more alcohol than nonathletes, with male and white athletes posing the highest levels of risk for heavy consumption. Expanded examination of in- and out-of-season athletes found out-of-season athletes drink more frequently and more per occasion than their in-season peers. Athletes were more likely than nonathletes to drink on specific days of the week and daily patterns differed between in- and out-of-season athletes. Conclusions: The risk of athlete status is moderated by sex, race, season, and day of the week.