Exaggerated attention blink response in prisoners with externalizing

The diverse phenotypic expressions of disinhibitory psychopathology are believed to reflect a common latent predisposing variable: externalizing. While deficiencies in executive functioning (i.e., cognitive/inhibitory control, working memory) and affective hyper-reactivity are commonly associated with externalizing, there is also evidence that externalizing is related to anomalous allocation of attention. In this study, we administered an attention blink task to a sample of male prisoners and assessed externalizing using the Impulsive–Antisociality scale (Benning, Patrick, Hicks, Blonigen, & Krueger, 2003). Individuals with high Impulsive–Antisociality displayed a significantly steeper attention blink (i.e., less accurate identification of a second target) than individuals with low Impulsive–Antisociality. Results provide new evidence that externalizers over-allocate attention to salient information and suggest a novel conceptualization of their disinhibitory psychopathology.     

Using priors to formalize theory: Optimal attention and the generalized context model

Formal models in psychology are used to make theoretical ideas precise and allow them to be evaluated quantitatively against data. We focus on one important??but under-used and incorrectly maligned??method for building theoretical assumptions into formal models, offered by the Bayesian statistical approach. This method involves capturing theoretical assumptions about the psychological variables in models by placing informative prior distributions on the parameters representing those variables. We demonstrate this approach of casting basic theoretical assumptions in an informative prior by considering a case study that involves the generalized context model (GCM) of category learning. We capture existing theorizing about the optimal allocation of attention in an informative prior distribution to yield a model that is higher in psychological content and lower in complexity than the standard implementation. We also highlight that formalizing psychological theory within an informative prior distribution allows standard Bayesian model selection methods to be applied without concerns about the sensitivity of results to the prior. We then use Bayesian model selection to test the theoretical assumptions about optimal allocation formalized in the prior. We argue that the general approach of using psychological theory to guide the specification of informative prior distributions is widely applicable and should be routinely used in psychological modeling.     

Der ?ltere Gewaltt?ter vor der Strafvollstreckungskammer

As much as violent offences are the beloved item of criminal novels and, the more brutal the better of the media, there is little research about this issue, when it comes to convicted offenders being in their sixties and seventies, and subjects of whether or not to be released. This article cannot present any evaluated database but must refer to common experience drawn from many individual cases mostly related to prisoners serving a life-time sentence or preventive detention. The discussion requires a distinction between a large variety of violations and will lead to the finding that every single violent offender must be closely and individually scrutinized. Nevertheless, the law provides some rules which, although they are given for every decision to be made on sentenced offenders who are to be released or to stay in penitentiary (which is, according to German law, a decision dedicated to a special Chamber of the Court), show specific implementations when applied to this group; what it does not show is pure age as a valid protective factor.     

Zur Qualit?t forensischer Gutachten aus strafrechtlicher Sicht

The paper describes the requirements, both regulatory and developed by court decisions that have to be fulfilled by expert witnesses in criminal cases. It emphasizes the borderline between (psycho) science and law, names sources of mistakes made by experts and the reasons and shows some results caused by bad expertise. A much better basic and advanced training of experts is demanded for experts as well as for judges, prosecutors and prison officers and calls for a new culture for a mutual exchange of dialogue.     

Numerical distance effects in visual search

We present three experiments in which observers searched for a target digit among distractor digits in displays in which the mean numerical target?Cdistractor distance was varied. Search speed and accuracy increased with numerical distance in both target-present and target-absent trials (Exp. 1A). In Experiment 1B, the target 5 was replaced with the letter S. The results suggest that the findings of Experiment 1A do not simply reflect the fact that digits that were numerically closer to the target coincidentally also shared more physical features with it. In Experiment 2, the numerical distance effect increased with set size in both target-present and target-absent trials. These findings are consistent with the view that increasing numerical target?Cdistractor distance affords faster nontarget rejection and target identification times. Recent neurobiological findings (e.g., Nieder, 2011) on the neuronal coding of numerosity have reported a width of tuning curves of numerosity-selective neurons that suggests graded, distance-dependent coactivation of the representations of adjacent numbers, which in visual search would make it harder to reject numerically closer distractors as nontargets.     

BOOK REVIEWS

This paper deals with the traumatic departures of Jews from Morocco during the 1950s and 1960s. The issue is analyzed through a set of diverse oral narrations. The study is based on several interviews conducted both among Jews who left Morocco and Muslims still living in the city of Meknes. The repression of the memory by Muslims of two young Jews murdered in 1967 in Meknes is questioned. In fact, although the perceptions concerning the Jews' departure differs according to the interviewee's social class, a common feeling appears to be shared by different societal sectors regarding this specific issue, which still comes across as a sensitive one today. The representation of Jews traditionally depicted as “fearful” and “weak” turns into “courageous” and “strong” during the Six‐Day War. This new representation perturbed the Muslim population, which seemed to be unable to deal with the new status Jews were acquiring. In fact, emigration was commonly considered to betray a lack of virility. The paper argues that the unexpected departure of an historic component of Moroccan society has left an open wound in Morocco. Even the memory of the “events” by the Jewish population appears to be fragmented into ambiguous constructions, leading, on the one hand, to perceptions of fear and uncertainty and, on the other, to images of affectionate relationships and intense nostalgia.     

Developmental changes in effects of risk and valence on adolescent decision-making

Recent research on risky decision-making in adults has shown that both the risk in potential outcomes and their valence (i.e., whether those outcomes involve gains or losses) exert dissociable influences on decisions. We hypothesised that the influences of these two crucial decision variables (risk and valence) on decision-making would vary developmentally during adolescence. We adapted a risk-taking paradigm that provides precise metrics for the impacts of risk and valence. Decision-making in 11–16 year old female adolescents was influenced by both risk and valence. However, their influences assumed different developmental patterns: the impact of valence diminished with age, while there was no developmental change in the impact of risk. These different developmental patterns provide further evidence that risk and valence are fundamentally dissociable constructs and have different influences on decisions across adolescence.     

Geometric and featural representations in semantic concepts

We explore the adequacy of two types of similarity representation in the context of semantic concepts. To this end, we evaluate different categorization models, assuming either a geometric or a featural representation, using categorization decisions involving familiar and unfamiliar foods and animals. The study aims to assess the optimal stimulus representation as a function of the familiarity of the stimuli. For the unfamiliar stimuli, the geometric categorization models provide the best account of the categorization data, whereas for the familiar stimuli, the featural categorization models provide the best account. This pattern of results suggests that people rely on perceptual information to assign an unfamiliar stimulus to a category but rely on more elaborate conceptual knowledge when assigning a familiar stimulus.