Life Domain Satisfaction: A Portugal–France Comparison

The study was aimed at replicating on a Portuguese sample the seven-factor model of life appraisal (physical autonomy, love life, family life, social life, occupational life, finances, and leisure life) that was suggested by Salvatore and Munoz Sastre Social Indicators Research 53:229–255 (2001). A sample of 1,111 Portuguese participants, aged 17–85, was presented with the Appraisal of Life Questionnaire. The “domain” model of life appraisal satisfactorily accounted for the data gathered on the Portuguese sample. Regarding finances and occupational life, Portuguese scores were lower than French scores. Regarding the occupational score and the leisure score, a clear linear decrease as a function of age was evidenced in the Portuguese sample. Finally, regarding the family score and the financial score, a non-linear relationship with age was found. An increase was observed from young adult age to adult age, and a decrease was observed from adult age to older age. A strong decrease in the physical autonomy scores among Portuguese females was also observed.     

On the estimation of a sensitive quantitative mean using blank cards

In this article, we introduce for the first time, the blank card methods for estimation of finite population mean of a sensitive variable. Two generic randomization devices are suggested, and for each device we identify the choices of special models. We introduce additive, multiplicative, and combination of both additive and multiplicative scrambling models that require use of a non sensitive variable. We derive the basic statistical properties of each model. It is interesting to note that various existing estimators can be viewed as the special cases of those presented here. The statistical efficiency of proposed techniques is compared with Greenberg et al. (1971 Greenberg, B.G., Kuebler Jr, R.R., Abernathy, J.R., Horvitz, D.G. (1971). Application of the randomized response technique in obtaining quantitative data. J. Am. Stat. Assoc. 66(334):243–250.[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]) and modified Perri (2008 Perri, P.F. (2008). Modified randomized devices for Simmons’ model. Model Assisted Stat. Appl. 3(3):233–239. [Google Scholar]) model. The proposed devices can easily be adjusted to achieve the required efficiency level by making suitable choices of different design parameters.     

Differential Parenting of African American Adolescents as an Explanation for Gender Disparities in Achievement

Differential parenting based on gender and birth order status was examined as an explanation for the achievement differences between African American males and females. In a sample of 796 African American adolescents from the MADICS study, girls were found to have much higher GPAs and test scores compared with boys. Girls reported receiving more monitoring, communication, and rule enforcement, but less autonomy in decision making than later‐born boys. Mothers also reported higher expectations for girls than boys. A significant percent of the GPA and test score gap was accounted for by the parenting differences in both married and single mother–headed households. It was concluded that reducing differential parenting could help narrow gender differences in achievement among African American adolescents.     

Recursive kernel estimate of the conditional quantile for functional ergodic data

ABSTRACT

In this article, we study the recursive kernel estimator of the conditional quantile of a scalar response variable Y given a random variable (rv) X taking values in a semi-metric space. Two estimators are considered. While the first one is given by inverting the double-kernel estimate of the conditional distribution function, the second estimator is obtained by using the robust approach. We establish the almost complete consistency of these estimates when the observations are sampled from a functional ergodic process. Finally, a simulation study is carried out to illustrate the finite sample performance of these estimators.     

Persistent Complications of Child Sexual Abuse: Sexually Compulsive Behaviors,Attachment, and Emotions

ABSTRACT

Child sexual abuse has the potential to cause distress for the victim across the lifespan. Romantic relationships may be particularly difficult for victims of child sexual abuse. This retrospective study examined differences in adult romantic attachment, sexually compulsive behaviors, and emotion regulation by history of child sexual abuse in a large, nonclinical sample. Those with a history of child sexual abuse reported more attachment anxiety in romantic relationships and engaged in more sexually compulsive behaviors. Overall, males displayed more sexually compulsive behaviors than females regardless of history of sexual abuse. Males with a history of sexual abuse displayed the greatest number of sexually compulsive behaviors. Surprisingly, no differences were observed in emotion regulation or attachment avoidant behaviors by history of child sexual abuse. Future research should seek to replicate current findings and examine emotion regulation difficulties experienced as a result of trauma.     

Effects of Macroeconomic Uncertainty on Investment and Economic Growth: Evidence from Pakistan

The relationship between macroeconomic uncertainty, investment and economic growth is an empirical issue in developing countries. This paper investigates the effects of macroeconomic uncertainty on investment and economic growth in Pakistan for the period 1975–2008 by using the accelerator model of investment and endogenous growth model. The conditional variances, directly estimated through the Generalized Autoregressive Conditional Heteroscedasticity (GARCH) model is utilized for erecting the uncertainty variables related to fiscal policy, openness and foreign capital inflows. The results clearly indicate that the macroeconomic uncertainty have significant negative effects on investment and per capita income of Pakistan. We conclude that a reduction in macroeconomic uncertainty through appropriate fiscal and monetary policy, stability in capital inflows and improved trade performance could result in high investment and sustainable economic growth in the country.     

A generic randomization device for quantitative response variables

We propose a generic randomization device (RD) for the estimation of mean of quantitative sensitive characteristic that make use of additive and multiplicative scrambled responses with blank card strategy. For this generic RD, we work with 12 choices and derive statistical properties of each model and give many immediate results in corollaries. It is interesting to note that various existing models can now be viewed as the special cases of this RD. Finally, various empirical studies have been done for each of these models to evaluate the efficiency performance.     

Cultural and Transnational Influences on the Use of Information Communication Technologies in Adult Long-Distance Family Relationships: An Extension of Media Multiplexity Theory

Geographically dispersed family members utilize frequent and diverse modes of communication to maintain their relationships. In transnational families separated by national boarders, family members may face constraints on channel selection due to cultural and/or structural factors. We draw from media multiplexity theory (MMT) and the cultural dimensions model to examine how transnationalism, societal individualism-collectivism (I-C), family allocentrism, and relational closeness influence the use of information communication technologies (ICTs) to maintain long-distance family relationships (LDFRs). Whereas results of the analysis provide cross-cultural support for MMT’s predictions regarding closeness and ICT frequency, the analysis reveals little support for MMT’s predictions regarding closeness and ICT variety. This study extends MMT by including culture in the study of relational closeness and ICT use, highlights the importance of family allocentrism when applying MMT to LDFRs, and demonstrates how transnational families can have frequent communication to maintain close, long-distance ties despite limited channel variety. Keywords: Culture, Immigrants, Information Communication Technologies, Long Distance Families, Relational ClosenessThis work was supported by the Humanities Center Faculty Fellowship program at Wayne State University.     

Objective functions with redundant domains

Let $(E,{ \mathcal{A}})$ be a set system consisting of a finite collection ${ \mathcal{A}}$ of subsets of a ground set E, and suppose that we have a function ? which maps ${ \mathcal{A}}$ into some set S. Now removing a subset K from E gives a restriction ${ \mathcal{A}}(\bar{K})$ to those sets of ${ \mathcal{A}}$ disjoint from K, and we have a corresponding restriction $\phi|_{\hspace {.02in}{ \mathcal{A}}(\bar{K})}$ of our function ?. If the removal of K does not affect the image set of ?, that is $\mbox {Im}(\phi|_{\hspace {.02in}{ \mathcal{A}}(\bar{X})})=\mbox {Im}(\phi)$ , then we will say that K is a kernel set of ${ \mathcal{A}}$ with respect to ?. Such sets are potentially useful in optimisation problems defined in terms of ?. We will call the set of all subsets of E that are kernel sets with respect to ? a kernel system and denote it by $\mathrm {Ker}_{\phi}({ \mathcal{A}})$ . Motivated by the optimisation theme, we ask which kernel systems are matroids. For instance, if ${ \mathcal{A}}$ is the collection of forests in a graph G with coloured edges and ? counts how many edges of each colour occurs in a forest then $\mathrm {Ker}_{\phi}({ \mathcal{A}})$ is isomorphic to the disjoint sum of the cocycle matroids of the differently coloured subgraphs; on the other hand, if ${ \mathcal{A}}$ is the power set of a set of positive integers, and ? is the function which takes the values 1 and 0 on subsets according to whether they are sum-free or not, then we show that $\mathrm {Ker}_{\phi}({ \mathcal{A}})$ is essentially never a matroid.