What limits working memory capacity? Evidence for modality-specific sources to the simultaneous storage of visual and auditory arrays

There is considerable debate on whether working memory (WM) storage is mediated by distinct subsystems for auditory and visual stimuli (Baddeley, 1986) or whether it is constrained by a single, central capacity-limited system (Cowan, 2006). Recent studies have addressed this issue by measuring the dual-task cost during the concurrent storage of auditory and visual arrays (e.g., Cocchini, Logie, Della Sala, MacPherson, & Baddeley, 2002; Fougnie & Marois, 2006; Saults & Cowan, 2007). However, studies have yielded widely different dual-task costs, which have been taken to support both modality-specific and central capacity-limit accounts of WM storage. Here, we demonstrate that the controversies regarding such costs mostly stem from how these costs are measured. Measures that compare combined dual-task capacity with the higher single-task capacity support a single, central WM store when there is a large disparity between the single-task capacities (Experiment 1) but not when the single-task capacities are well equated (Experiment 2). In contrast, measures of the dual-task cost that normalize for differences in single-task capacity reveal evidence for modality-specific stores, regardless of single-task performance. Moreover, these normalized measures indicate that dual-task cost is much smaller if the tasks do not involve maintaining bound feature representations in WM (Experiment 3). Taken together, these experiments not only resolve a discrepancy in the field and clarify how to assess the dual-task cost but also indicate that WM capacity can be constrained both by modality-specific and modality-independent sources of information processing.     

Recollections of Menarche: Communication Between Mothers and Daughters Regarding Menstruation

The nature of the communication between mothers and daughters at the time of menarche was examined in an attempt to determine the kinds of messages about menstruation that mothers tend to pass on to their daughters. The sample consisted of 138 women who ranged in age from 26 to 60 years (mean age = 43.2) at the time of the interviews. They were interviewed by 138 students enrolled in Psychology of Women classes taught by the first author. Participants were asked questions regarding their education about menstruation and their experience with menstruation. The content of the responses were analyzed for information about the quality and quantity of mother–daughter communication. The majority of daughters reported that communication with their mothers about menstruation was negative in tone. Eight types of negative messages were identified, including one labeled the grin-and-bear-it message. Two cases are presented to illustrate how the grin-and-bear-it message is related to the traditional feminine gender role and how it might negatively affect a woman's relationship with her mother and with other women.     

Cómo predecir a más personas en más ocasiones: evaluando la personalidad de las situaciones

RESUMEN

La creciente aceptación de que gran parte de la varianza de interés psicológico de la conducta podría encontrarse en la interacción entre la persona y la situación, sugiere la necesidad de un lenguaje común para la descripción tanto de las personas como de las situaciones. De acuerdo con esto, proponemos que una situación sea caracterizada por una serie de pares de plantillas de conducta, esto es, un conjunto de descripciones de personalidad (del tipo Q) de hipotéticas personas “ideales”, cada una de las cuales se asocia con una conducta concreta. La descripción del tipo Q de un determinado individuo se empareja pues, con cada plantilla, y se predice que mostrará la conducta asociada con la caracterización situacional-tipo a que más se parezca. La utilidad heurística y predictiva de esta técnica de emparejamiento, se demuestra en tres grupos de experimentos clásicos: (a) la situación de demora de la gratificación, (b) el juego de negociación estratégica, y (c) el experimento de condescendencia forzada. Se muestra que esta técnica también puede utilizarse para evaluar la validez ecológica de los experimentos de laboratorio, y para probar teorías que conciernen a los fenomenos psicológicos.     

Must psychologists change the way they analyze their data?

Wagenmakers, Wetzels, Borsboom, and van der Maas (2011) argued that psychologists should replace the familiar "frequentist" statistical analyses of their data with bayesian analyses. To illustrate their argument, they reanalyzed a set of psi experiments published recently in this journal by Bem (2011), maintaining that, contrary to his conclusion, his data do not yield evidence in favor of the psi hypothesis. We argue that they have incorrectly selected an unrealistic prior distribution for their analysis and that a bayesian analysis using a more reasonable distribution yields strong evidence in favor of the psi hypothesis. More generally, we argue that there are advantages to bayesian analyses that merit their increased use in the future. However, as Wagenmakers et al.'s analysis inadvertently revealed, they contain hidden traps that must be better understood before being more widely substituted for the familiar frequentist analyses currently employed by most research psychologists.     

Health-related stigma: rethinking concepts and interventions

As a feature of many chronic health problems, stigma contributes to a hidden burden of illness. Health-related stigma is typically characterized by social disqualification of individuals and populations who are identified with particular health problems. Another aspect is characterized by social disqualification targeting other features of a person's identity-such as ethnicity, sexual preferences or socio-economic status-which through limited access to services and other social disadvantages result in adverse effects on health. Health professionals therefore have substantial interests in recognizing and mitigating the impact of stigma as both a feature and a cause of many health problems. Rendering historical concepts of stigma as a discrediting physical attribute obsolete, two generations of Goffman-inspired sociological studies have redefined stigma as a socially discrediting situation of individuals. Based on that formulation and to specify health research interests, a working definition of health-related stigma is proposed. It emphasizes the particular features of target health problems and the role of particular social, cultural and economic settings in developing countries. As a practical matter, it relates to various strategies for intervention, which may focus on controlling or treating target health problems with informed health and social policies, countering the disposition of perpetrators to stigmatize, and supporting those who are stigmatized to limit their vulnerability and strengthen their resilience. Our suggestions for health studies of stigma highlight needs for disease- and culture-specific research that serves the interests of international health.     

Relationships among vocational training,income, and job complexity of high school dropouts and high school graduates

High school dropouts (N = 100) and high school graduates (N = 100), of which half of each group had received vocational training and the other half had not, were compared on data taken from the inactive employment applications of the Fort Walton Beach, Florida State Employment Office. The sample (N = 200) consisted of an equal number of males and females while 30% were minority group members. A two-way analysis of variance showed that completing vocational training was positively correlated with higher income and job complexity level. The existence or absence of vocational training was a more potent influence on income level and job complexity than was completion of high school.