A Monte Carlo study of traditional and rank-based picked-points analyses

In analysis of covariance with heteroscedastic slopes a picked-points analysis is often performed. Least-squares based picked-points analyses often lose efficiency (at times substantial) for nonnormal error distributions. Robust rank-based picked-points analyses are developed which are optimizable for heavy-tailed and/or skewed error distributions. The results of a Monte Carlo investigation of these analyses are presented. The situations include the normal model and models which violate it in one or several ways. Empirically the rank-based analyses appear to be valid over all these situations and more powerful than the least squares analysis for all the nonnormal models, while losing little efficiency at the normal model.     

Hybrid Strategies: Allocating Involvement in the Digital Age

An important trait of mobile phones is their capacity to superimpose multiple social interactions in time and space. Little research examines how individuals choose between face‐to‐face and digitally mediated interactions in specific social contexts. Drawing upon focus group interviews with a diverse sample of university students in the United States, we argue that, contrary to a perspective that is popular in theory and journalistic commentary, mobile phone users do not experience the digital and the face‐to‐face as distinct realms. In deciding where to direct their attention, users enmesh the distant and the present, making moves that are expressive and strategic in their own right that reveal the interest, intimacy and urgency that users place in multiple, coinciding social involvements.     

Sample registration in India

India's ad hoc sample registration scheme for obtaining current estimates of rural birth and death rates for the whole country is being implemented quite rapidly. Five states have 140 sample units, and eleven states will have from 20 to 100 units in the study depending upon the stage of implementation by March, 1967.Essential elements of the project for each unit are: (1) continuous registration of vital events by a paid part-time local enumerator, (2) a six-month household survey to detect births and deaths which occurred during the previous six months, and (3) matching events from registration and surveys and field recheck of unmatched events to obtain the "best" count of real number of events. Preliminary results in a non-random sample indicate that the crude birth and death rates are around 37.1 and 15.7 per 1,000, respectively, for India's rural population, but these probably will be found to be on the low side.Most of the problems of implementation are operational or administrative rather than statistical: (1) For various reasons, some states are slow in agreeing to assume financial and other responsibilities for the scheme. (2) In many states, even after the scheme has been accepted, there are delays in recruiting the staff, training, and so forth. (3) The most serious problem in the whole project is maintaining control of field operations well enough at each stage to insure that prescribed instructions and methodology are being followed.Experience in India indicates that staged implementation of such projects is highly desirable when trained staff are limited. There still are a number of methodological problems which must be tested as the sample registration evolves. Sample registration is one of the first steps in the Indian program to. develop an adequate vital statistics system. Exploratory studies to measure completeness of civil registration are being done now in an effort to develop means of using civil registration data alone for measurement of vital rates.     

Report on matching procedures of a dual record system in the southern Philippines

There are generally three stages to the development of rules for matching vital events data from two sources covering the same population: (a) establishing a set of “true” matches and nonmatches; (b) determining the best tolerance limits for each single characteristic which might be used in matching; and (c) experimenting to determine the set or sets of characteristics and the weights to be used in classifying a pair of records as matched or nonmatched. Specific examples, based on early matching experiments with data from the dual record system of the Mindanao Center for Population Studies (MCPS), are presented. Successive application of different sets of characteristics (differential valence rule) to the remaining unmatched events produced an acceptable rule for matching in this study.     

THE IMPACT ON FAMILIES OF REPORTED CHILD ABUSE OR NEGLECT

In order to evaluate the impact upon children and families of reported child abuse and neglect and the subsequent interventions, the casenotes of a random sample of substantiated cases (N=151) dealt with by the South Australian child protection agency were searched. The goal was to identify information concerning service delivery and changes for family members in the ensuing six months. Results relevant to both of these are presented and evaluated. An important corollary finding of this work was the absence of detailed information about outcome in the casenotes. We argue that this absence of feedback to child protection workers and policy-makers is likely to have detrimental effects on both worker morale and the quality of the services provided.     

Railroad Construction and Antebellum Slave Prices*

Slave prices rose rapidly to historic highs in the late‐antebellum South. The boom in railroad construction in the South helps explain this large increase in slave prices. The economic connection between railroads and slave prices reconciles the views of traditional economic historians who thought slavery was economically irrational and the views of the new economic historians who have concluded that slavery was highly profitable. It was the massive public subsidies to railroads that explain it was public policy that provided the stimulant to slave prices, not the “peculiar” culture of the antebellum South or the planter efficient management of slave labor.     

The Effects of the Specialist Schools Education Policy on School and Post‐School Outcomes in England

We investigate the effects of the specialist schools policy, introduced in 1994 in England, on test scores and truancy for pupils during compulsory schooling. We also assess the effects on labour market status and post‐secondary test score performance. We use matching models and data from the Youth Cohort Surveys for pupils who left school in either 2002 or 2004. We find that the policy did raise test scores, as well as increase the probability of employment. The evidence on post‐secondary test scores is mixed insofar as the policy increased the number of A levels studied but reduced average points scores.     

Thrown back: Reintegration experiences of National Guard/Reserve mothers of young children

Few studies have examined the experiences and perceptions of servicewoman mothers and their children, even as an increasing number of them have experienced deployment and combat exposure. The present paper describes a qualitative study that explored National Guard/Reserve (NG/R) mothers' experiences with mothering and co‐parenting during reintegration and their perceived priorities, supports, challenges and needs. Interpretive phenomenological analysis of seven in‐depth qualitative interviews produced themes including reunion and loneliness, the importance of time, help seeking and gendered experiences. Notably, all participants transitioned immediately back into primary caregiver roles upon homecoming, and several described how difficult it was to readjust while privately dealing with unmet mental health needs. Findings underscore the importance of a flexible suite of service options that meet key needs, most importantly, child care, social–emotional support for children and peer‐based parenting support specific to servicewoman mothers. For NG/R mothers, who may live far from base, community‐based services are essential, but as participants described, civilian social workers and other professionals must develop specialized knowledge, skills and experience to provide appropriate support.