Correlational biases in mean response latency differences

Multifarious psychological constructs are indexed by the mean latency difference (MLD), the within-subject difference between mean response latency on two tasks. Two associations consistently emerge in mean latency data. Firstly, across subjects, mean latencies on distinct tasks are positively correlated. This correlation arises from individual differences in general rates of information processing that are a shared influence on response latency in diverse tasks. Secondly, across tasks, the mean and variance of mean latency are positively correlated. Compared to a simple task, a complex task has both a larger average mean latency and a larger variance of mean latency, across subjects. Taken together, these associations make the interpretation of the MLD problematic by biasing correlations between the MLD and (a) task mean latencies, (b) the average of the mean latencies, (c) external criteria, and (d) other MLDs. A variety of mean latency transformations were evaluated and, while they differed in their effectiveness, they did not satisfactorily rectify MLD biases. An alternative approach, focusing on scale invariant contrasts of within-subject response latency distributions, is introduced in the conclusion.     

The War of the Words: How Linguistic Differences in Reporting Shape Perceptions of Terrorism

In four studies, we demonstrate that subtle linguistic differences in news reporting are sufficient to influence whether people interpret violent acts as patriotism or terrorism. In Study 1, a content analysis of newspaper articles describing violence in Iraq revealed that words implying destruction and devious intent were typically used in reference to violent actions associated with Iraq and opponents of the United States, while more benign words were used in reference to the United States and its allies. These observed differences in word usage establish schemas that guide perception of violence as terrorism or patriotism, thereby affecting people's attitudes toward (Study 2) and memory for (Studies 3 and 4) violent events. Implications for the media's impact on public policy are discussed.     

Change-point detection in a shape-restricted regression model

A regression model with a possible structural change and with a small number of measurements is considered. A priori information about the shape of the regression function is used to formulate the model as a linear regression model with inequality constraints and a likelihood ratio test for the presence of a change-point is constructed. The exact null distribution of the test statistic is given. Consistency of the test is proved when the noise level goes to zero. Numerical approximations to the powers against various alternatives are given and compared with the powers of the k-linear-r-ahead recursive residuals tests and CUSUM tests. Performance of four different estimators of the change-point is studied in a Monte Carlo experiment. An application of the procedures to some real data is also presented.     

A Sociology of Human Rights: Rights through a Social Movements Lens

Cet article propose un cadre théorique pour développer une sociologie des droits humains en s'intéressant aux mouvements sociaux dans le but de comprendre les cultures de droits locales. Si le droit humain est une idée qui se développe historiquement principalement à travers l'État, on remarque qu'au Canada, les avancées des droits de l'homme sont le fait de militants travaillant sur le terrain. Dans cet article, on explore aussi les écrits en sociologie au Canada. Les auteurs argumentent qu'on observe un sérieux manque d'engagement de la part des sociologues anglophones et francophones au Canada et que trop peu d'entres eux proposent de réelles études nationales. Évidemment, l'accès restreint à l'information législative représente un obstacle sérieux à la recherche académique au Canada. This article offers a framework for developing a sociology of human rights using social movements to understand local rights cultures. The idea of human rights has historically been highly statist, but grass‐roots activism has been at the heart of the most profound human rights advances in Canada. The article also raises questions about the current state of sociological writing about Canada. The author contends that there is a serious lack of engagement among English and French sociologists, and too few scholars provide genuine “national” studies. Moreover, restrictive access to information legislation represents a serious obstacle to academic research in Canada.     

Implicit Race Attitudes Predicted Vote in the 2008 U.S. Presidential Election

In the week before the 2008 United States presidential election, 1,057 registered voters reported their choice between the principal contenders (John McCain and Barack Obama) and completed several measures that might predict their candidate preference, including two implicit and two self-report measures of racial preference for European Americans (Whites) relative to African Americans (Blacks) and measures of symbolic racism and political conservatism. Greater White preference on each of the four race attitude measures predicted intention to vote for McCain, the White candidate. The implicit race attitude measures (Implicit Association Test and Affect Misattribution Procedure) predicted vote choice independently of the self-report race attitude measures, and also independently of political conservatism and symbolic racism. These findings support construct validity of the implicit measures.     

Schwarz information criterion based tests for a change-point in regression models

Standard Schwarz information criterion for testing a change-point in regression models is considered and two new test procedures are evolved. The case of small sample size is investigated. Numerical approximations to the power against various alternatives are given and compared with powers of tests based on r-ahead recursive residuals and of the CUSUM of squares test. Application of these procedures to some real data is also provided.     

E-Research: Ethics, Security, Design, and Control in Psychological Research on the Internet

Differences between traditional laboratory research and Internet-based research require a review of basic issues of research methodology. These differences have implications for research ethics (e.g., absence of researcher, potential exposure of confidential data and/or identity to a third party, guaranteed debriefing) and security (e.g., confidentiality and anonymity, security of data transmission, security of data storage, and tracking participants over time). We also review basic design issues a researcher should consider before implementing an Internet study, including the problem of participant self-selection and loss of experimental control on the Internet laboratory. An additional challenge for Internet-based research is the increased opportunity for participant misbehavior, intentional or otherwise. We discuss methods to detect and minimize these threats to the validity of Internet-based research.     

Change-Point Detection in Two-Phase Regression with Inequality Constraints on the Regression Parameters

Two-phase regression models with inequality constraints on the regression coefficients and with a small number of measurements is considered. A new test based on the likelihood ratio in linear model with inequality constraints for the presence of a change-point is proposed. Numerical approximations to the powers against various alternatives are given and compared with the powers of the likelihood ratio test in the two-phase regression models without inequality constraints, the backwards CUSUM test, and the k-linear-r-ahead recursive residuals tests. Performance of related likelihood based estimators of the change-point is briefly studied in a Monte Carlo experiment.     

Managing a depressed and suicidal loved one at home: impact on the family

This qualitative study examined the process families use to care for a depressed and suicidal family member at home. The grounded theory method was used for data collection and analysis. Seventeen family members were interviewed. The data revealed the basic social process of Maintaining Vigilance Through Managing, which depicts an ongoing, cyclical process that begins at a point of not knowing. Family members then move on to identifying, then gaining awareness, followed by knowing or understanding. This allows them to take action, then to proceed to watching and waiting. They then return to gaining awareness armed with new knowledge or understanding. It is at this point that the process becomes cyclical. It varies in intensity over time, depending on the level of depression and the risk for suicide. To preserve the integrity of these families, nurses must help develop strategies to guide them through this process as they care for their depressed and suicidal loved one.