A key role for experimental task performance: effects of math talent, gender and performance on the neural correlates of mental rotation

The neurophysiological mechanisms underlying superior cognitive performance are a research area of high interest. The majority of studies on the brain-performance relationship assessed the effects of capability-related group factors (e.g. talent, gender) on task-related brain activations while only few studies examined the effect of the inherent experimental task performance factor. In this functional MRI study, we combined both approaches and simultaneously assessed the effects of three relatively independent factors on the neurofunctional correlates of mental rotation in same-aged adolescents: math talent (gifted/controls: 17/17), gender (male/female: 16/18) and experimental task performance (median split on accuracy; high/low: 17/17). Better experimental task performance of mathematically gifted vs. control subjects and male vs. female subjects validated the selected paradigm. Activation of the inferior parietal lobule (IPL) was identified as a common effect of mathematical giftedness, gender and experimental task performance. However, multiple linear regression analyses (stepwise) indicated experimental task performance as the only predictor of parietal activations. In conclusion, increased activation of the IPL represents a positive neural correlate of mental rotation performance, irrespective of but consistent with the obtained neurocognitive and behavioral effects of math talent and gender. As experimental performance may strongly affect task-related activations this factor needs to be considered in capability-related group comparison studies on the brain-performance relationship.     

Interference between maintenance and processing in working memory: the effect of item-distractor similarity in complex span

Four experiments examined the effect of phonological similarity between items and distractors on complex span performance. Item-distractor similarity benefited serial recall when distractors followed the items they were similar to, but not when distractors preceded the items they were similar to. These findings are predicted by C-SOB (contextual serial order in a box), a computational model of complex span. The model assumes that distractors are involuntarily encoded into memory, being associated to the preceding item's list position. Distractors interfere with items by superposition of distributed representations that are associated to the same position. Superposition distorts item memory; this distortion is less severe when the distractor is similar to the item. Further support for the assumption that distractors are encoded at the position of the preceding item comes from the finding that intrusions of distractors at recall tended to come from the position of the target item. In addition, intruding distractors tend to replace items to which they are similar, showing that lack of distinctiveness also contributes to interference.     

FACSGen 2.0 animation software: generating three-dimensional FACS-valid facial expressions for emotion research

In this article, we present FACSGen 2.0, new animation software for creating static and dynamic three-dimensional facial expressions on the basis of the Facial Action Coding System (FACS). FACSGen permits total control over the action units (AUs), which can be animated at all levels of intensity and applied alone or in combination to an infinite number of faces. In two studies, we tested the validity of the software for the AU appearance defined in the FACS manual and the conveyed emotionality of FACSGen expressions. In Experiment 1, four FACS-certified coders evaluated the complete set of 35 single AUs and 54 AU combinations for AU presence or absence, appearance quality, intensity, and asymmetry. In Experiment 2, lay participants performed a recognition task on emotional expressions created with FACSGen software and rated the similarity of expressions displayed by human and FACSGen faces. Results showed good to excellent classification levels for all AUs by the four FACS coders, suggesting that the AUs are valid exemplars of FACS specifications. Lay participants' recognition rates for nine emotions were high, and comparisons of human and FACSGen expressions were very similar. The findings demonstrate the effectiveness of the software in producing reliable and emotionally valid expressions, and suggest its application in numerous scientific areas, including perception, emotion, and clinical and neuroscience research.     

Processing of representations in declarative and procedural working memory

The article investigates the relation between declarative and procedural working memory (WM; Oberauer, 2009). Two experiments test the assumption that representations in the two subsystems are selected for processing in analogous ways. Participants carried out a series of decisions on memorized lists of digits. For each decision, they had to select declarative and procedural representations. Regarding declarative representations, participants selected a memory set and a digit within this set as the input to each decision. With respect to the procedural representations, they selected a task set to be applied to the selected digit and a response within that task set. We independently manipulated the number of lists and the number of tasks to be switched among (one, two, or three; Experiment 1) and preparation time for a list switch (Experiment 2). For three effects commonly observed in task-switch studies, analogues in declarative WM were found: list-switch costs, mixing costs, and residual switch costs. List- and task-switch costs were underadditive, suggesting that declarative and procedural representations are selected separately and in parallel. The findings support the hypothesis of two analogous WM subsystems.     

Applying sampling theories to attitude learning in a virtual school class environment

According to sampling theories of attitude formation, evaluative learning depends on the sampling in the environment. We investigated teachers’ student evaluations in a simulated school class. Two experiments were designed to test distinct implications of experience-sampling models. While the model advanced by Fazio, Eiser, and Shook (2004) and Denrell (2005) led to the prediction of a negativity effect through asymmetric depolarization, another model (Fiedler, 1996) suggested a positivity effect through asymmetric polarization. Findings supported the latter contention. The selective tendency to oversample good students while neglecting weaker students was not radical enough to prevent the correction of negative impressions, precluding a negativity effect. Instead, extended selective sampling led to gradually increasing polarization of positive impressions, and facilitated detection of positive performance changes. While these findings can be reconciled with the Fazio–Denrell model, they highlight the crucial role of auxiliary psychological assumptions about attitude learning, as distinguished from the formal model itself.     

Kognitive Verhaltenstherapie bei schizophrenen Psychosen

Cognitive behavioral therapy (CBT) can be regarded as an established intervention for the treatment of patients with schizophrenia. Based on randomized clinical trials and meta-analyses, which found evidence for the efficacy of CBT, almost all evidence-based treatment guidelines recommend CBT for routine treatment. This paper demonstrates that in psychoses CBT is a disorder-specific adaptation of general principles of CBT for the treatment of patients suffering from schizophrenia. The CBT procedure draws on cognitive models of symptoms for the identification of treatment targets and focuses on everyday problems of patients by implementing a self-management approach. Fostering motivation and the application of behavioral and cognitive treatment strategies characterize this approach. If the patients live in a family, other family members should be involved in order to improve crisis management and problem solving within the family. A major challenge for the future is to improve the availability of CBT under the German conditions of routine mental health care.     

REASONS AND REASON REVISITED: ANOTHER REPLY TO MORRISON

In a previous article, Katherine Morrison (1999) argued that in my book Back to Reality: A Critique of Postmodern Theory in Psychotherapy (Held, 1995) I failed to accept the "strictly epistemological" aim of the narrative therapy movement. In the present article she reiterates the same objections, and adds the new criticism that I perceive epistemological oscillations in the writings of narrative therapists where there are none. In my present response I summarize my prior response to Morrison's (1999) critique (Held, 1999a), and I then respond to her new objections by showing how the conflation between epistemology and ontology that she attributes to me reflects her own confusion rather than mine.     

Bayesian Rationality for the Wason Selection Task? A Test of Optimal Data Selection Theory

Oaksford and Chater (1994) proposed to analyse the Wason selection task as an inductive instead of a deductive task. Applying Bayesian statistics, they concluded that the cards that participants tend to select are those with the highest expected information gain. Therefore, their choices seem rational from the perspective of optimal data selection. We tested a central prediction from the theory in three experiments: card selection frequencies should be sensitive to the subjective probability of occurrence for individual cards. In Experiment 1, expected frequencies of the p- and the q-card were manipulated independently by concepts referring to large vs. small sets. Although the manipulation had an effect on card selection frequencies, there was only a weak correlation between the predicted and the observed patterns. In the second experiment, relative frequencies of individual cards were manipulated more directly by explicit frequency information. In addition, participants estimated probabilities for the four logical cases and of the conditional statement itself. The experimental manipulations strongly affected the probability estimates, but were completely unrelated to card selections. This result was replicated in a third experiment. We conclude that our data provide little support for optimal data selection theory.     

Dual brain,creativity, and health

Abstract

The importance of the specialized functions of the right and left hemispheres is reviewed, with applications to education, treatment, creativity, and research duly noted. Experimental studies serve as indications of how alexithymia and creativity of the so‐called dual brain has been examined. Patients with com‐missurotomies, patients in psychotherapy, priests, creative subjects, and normal controls have been compared through a variety of experimental methods in terms of hemispheric specialization. The results indicate that creative and healthy subjects tend to have freer access to mutual interaction of both hemispheres without marked inhibitory or disinhibitory effects from either cerebral hemisphere.     

Values,Life Events,and Health: A Study in a Finnish Rural Community

The relationships between individual values (Schwartz, 1992), life events, and psychological symptoms were analyzed in a general population sample from a Finnish rural community. The design was a cross‐sectional survey. Data were gathered in 1993 (n = 174) and 2007 (n = 226). We investigated whether personal values would predict the number of life events. Results showed that openness to change values was positively and conservation values, negatively related to life events (those over which the individual had certain degree of control, e.g. getting a new job) in 1993. As expected, an increase in the importance of conservation values from 1993 to 2007 weakened the association between values and life events so that in 2007, only stimulation values were related to events. Although no consistent direct relations were found between single values and symptoms, we found that the higher the value congruence between individual and group values, the fewer the reported symptoms, for both time points. This research provided evidence suggesting that life events are also related to one's personal value priorities. Copyright © 2012 John Wiley & Sons, Ltd.