Adult age differences in interference from a prospective-memory task: a diffusion model analysis

People often slow down their ongoing activities when they must remember an intended action, known as the cost or interference effect of prospective memory (PM). Only a few studies have examined adult age differences in PM interference, and the specific reasons underlying such differences are not well understood. The authors used a model-based approach to reveal processes underlying PM interference and age differences in these processes. Older and younger adults first performed a block of an ongoing lexical decision task alone. An embedded event-based PM task was added in a second block. Simultaneously accounting for the changes in response time distributions and error rates induced by the PM task, Ratcliff’s (Psychological Review 85:59–108, 1978) diffusion model was used to decompose the nonlinear combination of speed and accuracy into psychologically meaningful components. Remembering an intention not only reduced processing efficiency in both age groups, but also prolonged peripheral nondecision times and induced response cautiousness. Overall, the findings suggest that there are multiple, but qualitatively similar factors underlying PM task interference in both age groups.     

Silencing the experience of change

Perceptual illusions have often served as an important tool in the study of perceptual experience. In this paper I argue that a recently discovered set of visual illusions sheds new light on the nature of time consciousness. I suggest the study of these silencing illusions as a tool kit for any philosopher interested in the experience of time and show how to better understand time consciousness by combining detailed empirical investigations with a detailed philosophical analysis. In addition, and more specifically, I argue against an initially plausible range of views that assume a close match between the temporal content of visual experience and the temporal layout of experience itself. Against such a widely held structural matching thesis I argue that which temporal changes we are experiencing bears no close relation to how our experience itself is changing over time. Explanations of the silencing illusions that are compatible with the structural matching thesis fail.     

The Role of Error Management Culture for Firm and Individual Innovativeness

To innovate at work is risky as every new endeavour is also error‐prone. Therefore, the way errors are managed in organisations may be related to organisations' innovativeness. We studied error management culture as one important and often overlooked organisational culture factor hypothesised to be related to organisational and individual innovativeness. Error management culture implies that a firm accepts that people make errors and uses “organizational practices related to communicating about errors, to sharing error knowledge, to helping in error situations, and to quickly detecting and handling errors” to deal with errors (Van Dyck, Frese, Baer, & Sonnentag, 2005 , p. 1229). Our sample consists of 30 companies with N = 227 employees. To decrease the problem of common method variance, we split the samples within each company into two subsamples: one subsample was used for the measurement of error management culture and the other one for the measure of organisational innovativeness. A multilevel structural equation modelling (MSEM) analysis showed error management culture to be related to organisational and individual innovativeness. Organisational innovativeness was a mediator for the relationship between error management culture and individual innovativeness. A potential implication is that organisations wanting to increase their innovativeness may need to examine their error management culture.     

Logic programs, iterated function systems, and recurrent radial basis function networks

Graphs of the single-step operator for first-order logic programs—displayed in the real plane—exhibit self-similar structures known from topological dynamics, i.e., they appear to be fractals, or more precisely, attractors of iterated function systems. We show that this observation can be made mathematically precise. In particular, we give conditions which ensure that those graphs coincide with attractors of suitably chosen iterated function systems, and conditions which allow the approximation of such graphs by iterated function systems or by fractal interpolation. Since iterated function systems can easily be encoded using recurrent radial basis function networks, we eventually obtain connectionist systems which approximate logic programs in the presence of function symbols.     

Compatibilism and the Notion of Rendering Something False

In my paper I am concerned with Peter van Inwagen's Consequence Argument. I focus on its probably best known version. In this form it crucially employs the notion of rendering a proposition false, anotion that has never been made sufficiently clear. The main aim of my paper is to shed light on thisnotion. The explications offered so far in thedebate all are based on modal concepts. Iargue that for sufficient results a ``stronger',hyper-intensional concept is needed, namely theconcept expressed by the word ``because'. I show that my analysis is superior to the prior ones. On the basis of this analysis I further explain why van Inwagen's argument fails.     

Prospective Evaluation of Predictive DNA Testing for Huntington’s Disease in a Large German Center

We present a prospective study of counselees seeking predictive testing for Huntington’s disease at the Huntington Center North Rhine-Westphalia (Bochum, Germany) between 2010 and 2012. The aim was to observe the decision-making process of at-risk individuals and explore their experiences following the decision as well as the impacts of positive and negative mutation results. Data were collected using two standardized questionnaires as well as via a semi-standardized telephone interview one year after the initial counseling session. Seventy-two  individuals participated in at least one of the three phases of the survey, including 31 individuals in the telephone interview. Sociodemographic data were in accordance with previous reports. The process of predictive testing was generally perceived in a positive manner, with almost all interviewees reporting a balanced emotional state one year after initial counseling, regardless of the decision for or against the test. The most important reasons named in favor of or against testing were assembled as well as different aspects regarding the satisfaction with the reached decision. In line with and expanding previous observations on gender-related differences in decision-making, our results suggest that gender-related aspects should be more strongly taken into account in genetic counseling during the predictive testing and counseling processes.     

Konzepte der Identifizierung

The authors investigate primary, hysterical, narcissistic identification, and introjection as conceptualised by Freud, Melanie Klein’s projective identification, and Anna Freud’s identification with the aggressor and altruistic surrender. It is pointed out that hysterical identification, narcissistic identification, and introjection are unconscious processes leading into a state of primary identification, and that they can be distinguished on a clinical level as regards the emotional meaning the object has for the subject. In hysterical identification the aspects of an object with which one identifies and all its other aspects retain their emotional meaning, in narcissistic identification these other aspects also keep their emotional meaning, but in this case the aspects with which one identifies lose their emotional meaning, and in introjection all aspects of an object lose their emotional meaning. Furthermore, it is shown that hysterical or narcissistic identifications are the mechanisms underlying the identification with the aggressor, and that—along with projections—hysterical re-identification also plays a decisive role in projective identification and altruistic surrender, whereby in these latter processes the object identifies himself unconsciously with the contents projected onto him in a hysterical or narcissistic manner.     

How people familiarize themselves with complex ecological concepts—anchoring of social representations of invasive non‐native species

New terms and frameworks are constantly being incorporated into scientific and public discourses on the management of natural resources and the environment. The idea of invasive non‐native plant and animal species, i.e. of species that enter a new range and spread prolifically, is currently becoming part of the public discourse in Scotland. This constitutes a valuable opportunity to study how people engage with new scientific concepts. We analysed focus group and personal interview data to examine how participants (including the general public, conservation volunteers and scientists) familiarized themselves with the ecological concept of invasive non‐native species. Our analysis draws on the idea of anchoring in the formation of social representations, complemented by concepts from cognitive linguistics and conceptual blending, and defines anchoring as a process of information transfer from source to target domains. Our findings suggest that social representations of invasive non‐native species were constituted to a large degree by perceptions of species' detrimental impacts and the human role in and responsibility for the introduction process. By contrast, the non‐nativeness of a species was not relevant for participants from the general public and conservation volunteers. Three types of anchoring could be distinguished in our participants' discussions that differed with regard to the relations between source and target domain. Whereas participants from the general public and conservation volunteers used all three types of anchoring, scientists did not. The identification of different anchoring types also helped to explain incongruencies in the scientific discourse on invasive non‐native species, and has implications for public information campaigns. Copyright © 2010 John Wiley & Sons, Ltd.