The concurrent validity of the N-back task as a working memory measure

The N-back task is used extensively in literature as a working memory (WM) paradigm and it is increasingly used as a measure of individual differences. However, not much is known about the psychometric properties of this task and the current study aims to shed more light on this issue. We first review the current literature on the psychometric properties of the N-back task. With three experiments using task variants with different stimuli and load levels, we then investigate the nature of the N-back task by investigating its relationship to WM, and its role as an inter-individual difference measure. Consistent with previous literature, our data suggest that the N-back task is not a useful measure of individual differences in WM, partly because of its insufficient reliability. Nevertheless, the task seems to be useful for experimental research in WM and also well predicts inter-individual differences in other higher cognitive functions, such as fluid intelligence, especially when used at higher levels of load.     

Retrieval experience in prospective memory: Strategic monitoring and spontaneous retrieval

According to the multi-process model of prospective memory (McDaniel & Einstein, 2000 McDaniel, M. A. and Einstein, G. O. 2000. Strategic and automatic processes in prospective memory retrieval: A multiprocess framework. Applied Cognitive Psychology, 14: S127–S144. [Crossref], [Web of Science ®] , [Google Scholar]), performance in a prospective memory task may be due to spontaneous retrieval processes or due to strategic monitoring. Spontaneous retrieval is typically accompanied by a pop up experience and strategic monitoring by a search experience. In this study we report two experiments with young adults in which we systematically investigated whether retrieval experience differed across experimental conditions. In Experiment 1 some prospective memory targets were preceded by associated primes. We expected that presenting primes would enhance performance by an automatic activation of the intention and hence lead to an increase in pop up experiences. In Experiment 2 half of the participants received instructions containing information about the specific context in which the prospective memory task would occur, whereas the other half of the participants received no such information. We expected that specific context instructions would enhance performance by legitimate anticipation of the prospective memory task and hence would lead to an increase in search experiences. The results confirmed these expectations. They indicate that the assessment of retrieval experience can provide valuable insights into the processes underlying prospective memory performance. They also suggest that retrieval experience can vary systematically across experimental situations as predicted by the multi-process model.     

Psychophysiology of prospective memory

Prospective memory involves the self-initiated retrieval of an intention upon an appropriate retrieval cue. Cue identification can be considered as an orienting reaction and may thus trigger a psychophysiological response. Here we present two experiments in which skin conductance responses (SCRs) elicited by prospective memory cues were compared to SCRs elicited by aversive stimuli to test whether a single prospective memory cue triggers a similar SCR as an aversive stimulus. In Experiment 2 we also assessed whether cue specificity had a differential influence on prospective memory performance and on SCRs. We found that detecting a single prospective memory cue is as likely to elicit a SCR as an aversive stimulus. Missed prospective memory cues also elicited SCRs. On a behavioural level, specific intentions led to better prospective memory performance. However, on a psychophysiological level specificity had no influence. More generally, the results indicate reliable SCRs for prospective memory cues and point to psychophysiological measures as valuable approach, which offers a new way to study one-off prospective memory tasks. Moreover, the findings are consistent with a theory that posits multiple prospective memory retrieval stages.     

Creativity,Drugs, Crime,and Education: On Eisenman's Contemporary Social issues: Drugs,Crime, Creativity,and Education

This article reports analyses of the verdicts of various film organizations that annually present awards to motion pictures and investigates whether they award/nominate the same movies in a given year. This research disputes previous findings that reported a high level of agreement between those juries, by the means of reliability analysis and the Cronbach's alpha composite. Arguments were raised for why these earlier findings were flawed and why the use of Cronbach's alpha is problematic. Different aspects of consensus are discussed, after which a new measure (β) is introduced. This is followed by a detailed comparison between particular juries with regard to the percentage share of their decisions that award the most successful (chosen by multiple other juries as well) and the least successful (uniquely awarded) films. This measure shows how often a singular jury decides in line with the others and how much does it stray from the consensus. The article also broadens the theoretical discussions about the reasons for (not) expecting a consensus to arise between various expert juries. It argues that by adopting a cultural economic perspective we become aware of various reasons, most importantly competition between the award events and the juries tend towards a lower level of consensus.     

Index to Volume 122

I examined the impact of first names on ratings of physical attractiveness as judged by British undergraduate subjects using male and female full-face pictures presented on photographic slides. The photographs were identified with attractive names, unattractive names, or without any name indicated. Subjects rated the stimulus figures for physical attractiveness. Names accounted for approximately 6% of the variance in subjects' ratings of physical attractiveness. This effect was highly significant for pictures of women (p < .001), but nonsignificant for pictures of men (p > .05).     

Why a Big Mac Is a Good Mac: Associations between Affect and Size

Evaluation is a core topic of interest in both social psychology and linguistic theory, but there are relatively few social-cognitive studies examining the “online” consequences of affective metaphor. The experiments presented here sought to investigate such online consequences in relation to an understudied class of metaphors linking evaluation to size (i.e., “bigger is better”). Consistent with such metaphors, we found that positive (vs. negative) words were evaluated more quickly (Experiment 1) and accurately (Experiment 2) when presented in a larger (vs. smaller) font size. Parallel and opposite effects were found for negative words. A third experiment demonstrated that words presented in a larger font size were evaluated more favorably, thus extending size effects to evaluative judgments. Together, the studies converge on the importance of size metaphors for understanding evaluation from a social-cognitive perspective.     

The Effect of Terror on Institutional Trust: New Evidence from the 3/11 Madrid Terrorist Attack

Research from the United States suggests that the 9/11 terrorist attack increased trust in political institutions by creating a “rally effect.” In this research note we analyze Eurobarometer data collected immediately before and after the March 11, 2004 terrorist attack in Madrid to replicate and extend previous findings from the United States. We report that, first, trust in different types of institutions (political, media, justice) increased significantly immediately after the Madrid terrorist attack; second, the effect of the attack varied systematically across different types of institutions; and, third, the effect was generally short‐lived. Our results suggest that the rally effect of terror on trust in institutions generalizes across national contexts but also that the effect differs across types of institutions.     

Exemplification and Universal Realism

The relation between universal and particular is considered to be the Achilles’ heel of universal realism. However, modern universal realism with facts does not have the difficulties which traditional Platonic universal realism had. Its exemplification relation connecting particulars and universals in atomic facts is very different from Platonic participation. Bradley’s regress argument against the exemplification relation can be refuted in two different ways. Nevertheless, there are good reasons to avoid the assumption of an exemplification relation and thus to go without the Achilles’ heel altogether.     

Reducing the Tendency to Aggress: Insights from Social and Personality Psychology

The social and personality psychology literature on aggression has largely focused on the factors that are associated with an increase in aggression such as provocation, violent media exposure, and trait anger. This work has been quite important in developing models of aggression. Less emphasis, however, has been placed on examining the factors that reduce this harmful behavior. We use a widely researched model of aggression to examine some factors that are associated with aggression reduction including self‐control, pro‐social experiences, and appraisal processes. These variables reduce the tendency to aggress, and our review addresses some potential processes involved. We suggest that a stronger research focus on the factors that reduce aggression can aid our understanding of not only why aggression occurs but also how to control it.     

Ethical Issues Raised by Epigenetic Testing for Alcohol,Tobacco, and Cannabis

Epigenetic testing is one of the most significant new technologies to provide insight into the behavioral and environmental factors that influence the development and reconfiguration of the human genetic code. This technology allows us to identify structural changes in the genome that occur due to exposure to a wide variety of substances including alcohol, tobacco, and cannabis. The information gained can be used to promote health but it also raises a variety of ethical, legal, and social issues. As society progresses in understanding the epigenetic mechanisms of substance use and addiction, there is an opportunity to use these use this knowledge to enable medical, behavioral, and environmental interventions to alleviate the burden of addiction. This article describes the ethical issues associated with use of epigenetic testing for alcohol, tobacco, and cannabis and the implications of this technology. A further review of the scientific basis for the relevance of epigenetics is found in the accompanying article by Philibert and Erwin in this issue. Copyright © 2015 John Wiley & Sons, Ltd.