Intentions and strategies among elderly people: Coping in everyday life

Many studies of the elderly adopt a provider perspective, focusing on social policy, organizations, and professional groups. Less is known about how the elderly manage when they eventually need help in everyday living. This study examined the everyday behavior and strategies of the elderly through conducting semi-structured, in-depth interviews with 22 people over age 65. The intentions and strategies found revealed that the elderly managed or coped in active, adaptive, and passive ways, ranged along a continuum from actively maintaining their independence to passively depending on others.     

School Size and the Interpersonal Side of Education: An Examination of Race/Ethnicity and Organizational Context*

Objectives. The purpose of this study was to extend research on the connection between school size and student outcomes by examining how school size was related to interpersonal processes and whether the interpersonal effects of school size varied by race/ethnicity. Methods. We applied multilevel modeling techniques to a sample of 14,966 students in 84 schools from the National Longitudinal Study of Adolescent Health. Results. Increasing school size was associated with decreasing student attachment to school and to teachers as well as extracurricular participation. Student attachment and teacher bonding diminished with increasing school size at a decreasing rate (reaching minimums in schools with between 1,700–2,000 students), but extracurricular participation dropped at a steady rate. These patterns did not differ substantially by race/ethnicity. Conclusions. The size of the educational institution influences interpersonal dynamics among actors in the institution and does so similarly across student groups. More generally, this research demonstrates the importance of organizational characteristics for social life.     

Statistical inference for two Markov binomial models with applications

Disturbance models, involved in Engineering Process Control (EPC) and Statistical Process Control (SPC), take into consideration an additional parameter, the probability of a jump in the process parameter in any time period. Corrective actions are necessary to bring the process back on target. In a tuning procedure, one can deal with permanent corrective actions (settings), or with provisional ones (adjustments). Tuning r machines can be modeled through some binomial Markov chains, with the transition matrix depending on the probability that a disturbance occurs. Using two such models, we construct consistent estimators for the probability that a disturbance occurs at any period of time.     

SEXUAL PRIVACY AND EARLY SEXUAL DEBUT IN NAIROBI INFORMAL SETTLEMENTS1

The purpose of this paper is to examine sexual privacy as a factor that may influence the relatively earlier sexual debut among the urban poor in Nairobi. 40 focus group discussions were held with people aged 13–17, 18–24, 25–49 and 50+ years, community leaders and service providers in four informal settlements of Nairobi. Lack of sexual privacy was identified as a major problem. Although adults were reported to use various means to acquire some measure of privacy, such as waiting for children to fall asleep, switching off the lights and separating the sleeping areas using curtains, these measures were found inadequate. The participants therefore associated young people's early initiation of sexual activity with lack of sexual privacy. Sexual privacy has not received adequate research attention as a dimension of poverty that influences young people's sexuality. More studies are called for to unravel the specific association between sexual privacy among adults and young people's sexual behaviour. The living conditions of the urban poor should also be addressed to mitigate the effects of lack of sexual privacy.     

THE ROMANTIC RELATIONSHIPS OF AFRICAN-AMERICAN AND WHITE ADOLESCENTS

Using data from the National Longitudinal Study of Adolescent Health (Add Health), we analyze African-American and white respondents' reports of the nature of their romantic experiences. We explore levels of companionate intimacy, including frequency of interaction and intimate self-disclosure, degree of romantic and sexual intimacy, as well as problem areas including relationship violence and nonexclusivity. African-American respondents report relationships of longer average duration relative to white youths, but overall responses reflect a somewhat less intense or intimate relationship style. These observed differences were not completely attenuated once relevant controls are introduced. We connect these findings to prior research on African-American adolescent family and peer relations, and call for additional research that supplements the behavioral emphasis of Add Health.     

Family roles and work values: Processes of selection and change

This study focuses on whether marriage and parenthood influence work values after taking into account the influence of work values on family formation. In a recent panel of young adults (N= 709), stronger extrinsic and weaker intrinsic work values during adolescence predicted marriage and parenthood 9 years out of high school. Controlling these relationships, wives, but not husbands, came to attach less importance to extrinsic rewards, and both husbands and wives attached less importance to intrinsic rewards, compared to single men and women. Fathers came to place greater importance on extrinsic rewards than men who had not become parents. The effect of motherhood on extrinsic values depended upon marital status, with positive effects only evident among single mothers. The findings are discussed in terms of their implications for models of work‐family relationships and understanding the meaning of contemporary family roles, especially motherhood and fatherhood.     

Perceived Inflation Persistence

This article constructs and estimates a measure called perceived inflation persistence that can be used to determine if professional forecasters’ inflation forecasts indicate there has been a change in inflation persistence. This measure is built via the implied autocorrelation function that follows from the estimates obtained using a forecaster-specific state-space model. Findings indicate that U.S. perceived inflation persistence has changed since the mid-1990s with more consensus among forecasters at lower levels of persistence. When compared to the autocorrelation function for actual inflation, forecasters typically react less to shocks to inflation than the actual inflation data would suggest.     

Recognizing Structural Nonidentifiability: When Experiments Do Not Provide Information About Important Parameters and Misleading Models Can Still Have Great Fit

In the quest to model various phenomena, the foundational importance of parameter identifiability to sound statistical modeling may be less well appreciated than goodness of fit. Identifiability concerns the quality of objective information in data to facilitate estimation of a parameter, while nonidentifiability means there are parameters in a model about which the data provide little or no information. In purely empirical models where parsimonious good fit is the chief concern, nonidentifiability (or parameter redundancy) implies overparameterization of the model. In contrast, nonidentifiability implies underinformativeness of available data in mechanistically derived models where parameters are interpreted as having strong practical meaning. This study explores illustrative examples of structural nonidentifiability and its implications using mechanistically derived models (for repeated presence/absence analyses and dose–response of Escherichia coli O157:H7 and norovirus) drawn from quantitative microbial risk assessment. Following algebraic proof of nonidentifiability in these examples, profile likelihood analysis and Bayesian Markov Chain Monte Carlo with uniform priors are illustrated as tools to help detect model parameters that are not strongly identifiable. It is shown that identifiability should be considered during experimental design and ethics approval to ensure generated data can yield strong objective information about all mechanistic parameters of interest. When Bayesian methods are applied to a nonidentifiable model, the subjective prior effectively fabricates information about any parameters about which the data carry no objective information. Finally, structural nonidentifiability can lead to spurious models that fit data well but can yield severely flawed inferences and predictions when they are interpreted or used inappropriately.     

Training Intraverbal Naming to Establish Matching-to-Sample Performances

The current study evaluated whether training intraverbal naming would be sufficient to establish visual-visual matching-to-sample (MTS) performances in college students. In the first experiment, we used a multiple-probe design across stimulus sets to assess whether six participants could match arbitrary visual stimuli (AB) after learning to tact their two experimentally defined classes (A’ and B’) and then intraverbally relate their names (i.e., “A’ goes with B’”). All participants matched the stimuli accurately after training, as well as emitted the trained intraverbals. In the second experiment, we used a multiple baseline design across four participants to assess whether the same training would produce bi-directional intraverbals in the form of “B’ goes with A’,” and MTS performance consistent with symmetry (BA). All participants responded accurately during matching and intraverbal tests. Across both experiments, participants stated the trained intraverbals while performing the matching task. Results showed that MTS performance can be established solely by verbal behavior training.