Cognitive control under stress: how stress affects strategies of task-set reconfiguration

This study investigated the effect of stress on cognitive control in task shifting. Subjects shifted between two tasks in an explicit cuing paradigm. Shift costs (i.e., performance decrements on task shifts relative to task repetitions) were measured for a long and a short cue-stimulus interval (CSI). Stress was varied by administering low-stress and high-stress IQ scales to two groups of subjects. In the low-stress group, shift costs were reduced with an increased CSI, a result that typically indicates anticipatory and shift-specific task-set reconfiguration. In the high-stress group, however, shift costs were independent of the CSI. This result is consistent with the idea that stress induces a change in the reconfiguration strategy, possibly to adapt to depleted resources.     

Virtual reality for the psychophysiological assessment of phobic fear: responses during virtual tunnel driving

An overall assessment of phobic fear requires not only a verbal self-report of fear but also an assessment of behavioral and physiological responses. Virtual reality can be used to simulate realistic (phobic) situations and therefore should be useful for inducing emotions in a controlled, standardized way. Verbal and physiological fear reactions were examined in 15 highly tunnel-fearful and 15 matched control participants in 3 virtual driving scenarios: an open environment, a partially open tunnel (gallery), and a closed tunnel. Highly tunnel-fearful participants were characterized by elevated fear responses specifically during tunnel drives as reflected in verbal fear ratings, heart rate reactions, and startle responses. Heart rate and fear ratings differentiated highly tunnel-fearful from control participants with an accuracy of 88% and 93%, respectively. Results indicate that virtual environments are valuable tools for the assessment of fear reactions and should be used in future experimental research.     

Pianists duet better when they play with themselves: on the possible role of action simulation in synchronization

Ensemble musicians play in synchrony despite expressively motivated irregularities in timing. We hypothesized that synchrony is achieved by each performer internally simulating the concurrent actions of other ensemble members, relying initially on how they would perform in their stead. Hence, musicians should be better at synchronizing with recordings of their own earlier performances than with others' recordings. We required pianists to record one part from each of several piano duets, and later to play the complementary part in synchrony with their own or others' recordings. The pianists were also asked to identify their own recordings. The pianists were better at synchronizing with their own than with others' performances, and they were able to recognize their own recordings. Furthermore, synchronization accuracy and recognition were correlated: Pianists who were relatively accurate at synchronizing with their own performances were also good at recognizing them. Thus, action simulation may underlie both synchronization and self-recognition.     

Nice wor_ if you can get the wor_: subliminal semantic and form priming in fragment completion

Two experiments investigated subliminal semantic and form priming in a word-completion task. Visual gap-words with a dominant and a subordinate solution were preceded by form-related or by semantically related words, which were briefly presented and sandwich-masked. Priming of the subordinate solution was assessed in Experiment 1, relative to a neutral condition. Both solutions were primed in Experiment 2. In the absence of conscious prime recognition, both semantic and form primes reliably increased the probability with which the primed solution was given. With our variant of fragment-completion, response priming can be ruled out as explanation. Moreover, effects were already present at first presentation, excluding an interpretation in terms of partial awareness due to massive repetition. The data demonstrate automatic activation at both form and semantic levels in the absence of conscious awareness.     

Excessive computer game playing: evidence for addiction and aggression?

Computer games have become an ever-increasing part of many adolescents' day-to-day lives. Coupled with this phenomenon, reports of excessive gaming (computer game playing) denominated as "computer/video game addiction" have been discussed in the popular press as well as in recent scientific research. The aim of the present study was the investigation of the addictive potential of gaming as well as the relationship between excessive gaming and aggressive attitudes and behavior. A sample comprising of 7069 gamers answered two questionnaires online. Data revealed that 11.9% of participants (840 gamers) fulfilled diagnostic criteria of addiction concerning their gaming behavior, while there is only weak evidence for the assumption that aggressive behavior is interrelated with excessive gaming in general. Results of this study contribute to the assumption that also playing games without monetary reward meets criteria of addiction. Hence, an addictive potential of gaming should be taken into consideration regarding prevention and intervention.     

Happiness theories of the good life

The paper starts with a presentation of the pure happiness theory, i.e. the idea that the quality of a person’s life is dependent on one thing only, viz. how happy that person is. To find out whether this type of theory is plausible or not, I examine the standard arguments for and against this theory, including Nozick’s experience machine argument. I then investigate how the theory can be modified in order to avoid the most serious objections. I first examine different types of epistemic modifications of the theory (e.g. the idea that a person’s happiness is more valuable for her if it is based on a correct perception of her own life), and then turn to a number of modifications which all make the value of a person’s happiness depend on whether the evaluative standard on which her happiness is based satisfies certain requirements. In connection with this, I present and defend my own modified version of the happiness theory.     

Self‐esteem discrepancies and defensive reactions to social feedback

Recent research has provided increasing evidence that discrepancies between implicit and explicit self‐esteem (SE) are related to defensiveness. However, only one pattern, called fragile SE (a combination of high explicit and low implicit SE), has been the focus of research so far. Relatively little attention has been paid to the second possible SE discrepancy (low explicit/high implicit). We propose that both types of discrepancies are maladaptive, because they indicate a lack of integration in self‐representation. We conducted two studies on the correlates of discrepant SE in the sphere of defensiveness. We hypothesized that persons with discrepant SE exhibit more defensive behaviour than individuals with congruent SE. In two student samples, explicit SE was measured by means of the Multidimensional Self‐Esteem Scale. Implicit SE was measured with the Name Letter Technique (Study 1) and an Implicit Association Test (Study 2). In Study 1 (N = 102) we examined effects of implicit and explicit SE on defensive reactions to ambiguous statements. For this purpose, we adapted the Ambiguous Statements Task (AST, Tafarodi, 1998 ), a procedure that measures participants' tendency to interpret ambiguous expressions in a positive vs negative manner. We found that the combination of low explicit SE and high implicit SE was associated with a more positive interpretation of the ambiguous statements. Study 2 (N = 87) investigated the effects of discrepant SE on reactions to SE threat in an experimental setting. The time participants spent reading positive or negative social feedback was used as an unobtrusive measure of defensiveness. We found that people with discrepant SE went through the negative feedback faster than people with congruent SE. In sum, the studies provide converging evidence that both kinds of discrepancies between implicit and explicit SE are related to defensive behaviour.     

The interplay between values,acculturation and adaptation: A study on Turkish‐Belgian adolescents

Although there is a bulk of evidence for the relations between values, acculturation, and adaptation, the interrelations between these key concepts of the acculturation literature have not yet been investigated simultaneously. The present study proposes a model connecting value orientations (separatedness and conformity) to adaptation outcomes (sociocultural and psychological). Furthermore, this link was hypothesized to be strengthened by an indirect relationship where acculturation strategies (culture maintenance and culture adoption) would relate certain values to certain aspects of adaptation. The model was tested on 287 Turkish‐Belgian adolescents with an average age of 16.27 years (SD = 1.86 years). SEM analysis confirmed the hypothesized indirect links underlining the crucial role of acculturation strategies as mediators in the adaptation process. Separatedness predicted sociocultural adaptation via culture adoption whereas conformity impacted psychological adaptation via culture maintenance. In addition, separatedness predicted poorer psychological adaptation. Results were discussed with reference to inverse benefits and costs of individualism and collectivism.