161,504 research outputs found
Happy Mouth and Sad Eyes : Scanning Emotional Facial Expressions
No full textThere is evidence that specific regions of the face such as the eyes are particularly relevant for the decoding of emotional expressions, but it has not been examined whether scan paths of observers vary for facial expressions with different emotional content. In this study, eye-tracking was used to monitor scanning behavior of healthy participants while looking at different facial expressions. Locations of fixations and their durations were recorded, and a dominance ratio (i.e., eyes and mouth relative to the rest of the face) was calculated. Across all emotional expressions, initial fixations were most frequently directed to either the eyes or the mouth. Especially in sad facial expressions, participants more frequently issued the initial fixation to the eyes compared with all other expressions. In happy facial expressions, participants fixated the mouth region for a longer time across all trials. For fearful and neutral facial expressions, the dominance ratio indicated that both the eyes and mouth are equally important. However, in sad and angry facial expressions, the eyes received more attention than the mouth. These results confirm the relevance of the eyes and mouth in emotional decoding, but they also demonstrate that not all facial expressions with different emotional content are decoded equally. Our data suggest that people look at regions that are most characteristic for each emotion
How do individuals with Developmental Coordination Disorder and Attention Deficit Hyperactivity Disorder cope with their symptoms?
No full textDiagnostik psychopathischer persönlichkeitszüge bei straftätern
No full textDas Psychopathic Personality Inventory Revised (PPI-R) wurde bisher anhand der Daten gesunder, nicht straffälliger Probanden validiert. Die vorliegende Untersuchung überprüft die Validität des PPI-R für Straftäterstichproben. Die PPI-R Werte von 152 männlichen Patienten des Maßregelvollzugs, 65 Strafgefangenen und 214 männlichen Studenten wurden verglichen. Es wurden Reliabilitätskoeffizienten sowie Korrelationen mit der PCL-R berechnet. Es ergaben sich gute Reliabilitätskoeffizienten in der forensischen und der Strafgefangenen-Stichprobe. Die forensischen Patienten unterschieden sich signifikant von der gesunden Gruppe im Gesamtwert des PPI-R. Der PPI-R Gesamtwert und die PCL-R sowie deren Faktoren korrelierten signifikant. Obwohl die Gütekriterien des PPI-R auch in Straftätergruppen repliziert werden konnten, legen die Ergebnisse die Verwendung spezifischer Referenzwerte nahe. Einschränkungen des Einsatzes im Rahmen von prognostischen Aussagen sind zu beachten
Spatial variation of Anopheles-transmitted Wuchereria bancrofti and Plasmodium falciparum infection densities in Papua New Guinea.
No full textThe spatial variation of Wuchereria bancrofti and Plasmodium falciparum infection densities was measured in a rural area of Papua New Guinea where they share anopheline vectors. The spatial correlation of W. bancrofti was found to reduce by half over an estimated distance of 1.7 km, much smaller than the 50 km grid used by the World Health Organization rapid mapping method. For P. falciparum, negligible spatial correlation was found. After mass treatment with anti-filarial drugs, there was negligible correlation between the changes in the densities of the two parasites
Missing out: Depressed patients avoid functional risk-taking in the Balloon Analogue Risk Task
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From avoidance to approach: The influence of threat-of-shock on reward-based decision making
No full textPotential threat can prime defensive responding and avoidance behavior, which may result in the loss of rewards. When aversive consequences do not occur, avoidance should, thus, be quickly overcome in healthy individuals. This study examined the impact of threat anticipation on reward-based decisions. Sixty-five participants completed a decision-making task in which they had to choose between high- and low-reward options. To model an approach-avoidance conflict, the high-reward option was contingent with a threat-of-shock cue; the low-reward option was contingent with a safety cue. In control trials, decisions were made without threat/safety instructions. Overall, behavioral data documented a typical preference for the profitable option. Importantly, under threat-of-shock, participants initially avoided the profitable option (i.e., safe, but less profitable choices). However, when they experienced that shocks did actually not occur, participants overcame initial avoidance in favor of larger gains. Furthermore, autonomic arousal (skin conductance and heart rate responses) was elevated during threat cues compared to safety and non-threatening control cues. Taken together, threat-of-shock was associated with behavioral consequences: initially, participants avoided threat-related options but made more profitable decisions as they experienced no aversive consequences. Although socially acquired threat contingencies are typically stable, incentives for approach can help to overcome threat-related avoidance
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