Perceiving one’s own movements when using a tool

The present study examined what participants perceive of their hand movements when using a tool. In the experiments different gains for either the x-axis or the y-axis perturbed the relation between hand movements on a digitizer tablet and cursor movements on a display. As a consequence of the perturbation participants drew circles on the display while their covered hand movements followed either vertical or horizontal ellipses on the digitizer tablet. When asked to evaluate their hand movements, participants were extremely uncertain about their trajectories. By varying the amount of visual feedback, findings indicated that the low awareness of one’s own movements originated mainly from an insufficient quality of the humans’ tactile and proprioceptive system or from an insufficient spatial reconstruction of this information in memory.     

At your own peril: An ERP study of voluntary task set selection processes in the medial frontal cortex

A tool that is commonly used to investigate selection among different alternatives in a changing environment is the task-switching paradigm. Functional neuroimaging has pointed out a role for the posterior medial frontal cortex and the posterior parietal cortex in the voluntary selection of task sets. In the present study, we set out to investigate the temporal dynamics of these agency-related processes (in task choice vs. no-choice conditions) using event-related brain potentials (ERPs). The results revealed agency-related modulations of a series of ERP components, including (1) an early parieto-occipital activation, taken to reflect the evaluation of choice versus no choice; (2) a subsequent medial frontal expression of the voluntary selection between task sets; (3) a CNV-like sustained negativity in preparation for the target; (4) a target-induced N210—P210 complex, taken to reflect early sensory-perceptual processing; and (5) a target-induced P3, associated with the evaluation of the stimulus and its designated response vis-à-vis the chosen versus competing task sets. Together, these results indicate that the opportunity to choose between tasks invokes activity originating from the medial frontal cortex, associated with voluntary task set selection, but also activation at different time points in a number of other brain areas, not necessarily captured by functional neuroimaging.     

Psychotherapie von Anpassungsstörungen

In this study we examined the effectiveness of an outpatient client-centered psychotherapy of patients with adjustment disorders (ICD-10 F43.2) limited to twelve sessions in comparison to an untreated control group. The patients of each group (n_treatment= 31 and n_control= 19) had been diagnosed with an adjustment disorder in response to one of the following stressful events: either the loss of an important person or performance deficits at work or university. Compared with the untreated control group the immediate therapy group improved significantly on rating scales and questionnaires. These positive treatment effects proved stable at a 3 months follow-up. Individual treatment gains were also analyzed for clinical and statistical significance. The improvements of the treatment group were significantly greater in all used measures than those of the control group. These improvements were interpreted as an effect of the client-centered treatment which resulted in high individual overall treatment gains and in high effectsizes.     

Omission bias in vaccination decisions: Where’s the “omission”? Where’s the “bias”?

Several studies have reported that parents are often reluctant to vaccinate their own or other people’s children, even when the balance of health risks and benefits clearly favors vaccination. This reluctance has been interpreted as a manifestation of “omission bias”, a general tendency to prefer inactive to active options even when inaction leads to worse outcomes or greater risks. The research raises significant public health concerns as well as worries about human decision biases in general. In this paper we argue that existing research on vaccination decisions has not convincingly demonstrated any general reluctance to vaccinate nor has it made the case that such a tendency, if found, would constitute a bias. We identify several conceptual and methodological issues that, we argue, cloud interpretation of earlier studies. In a new questionnaire-based study (Experiment 1) we examined the vaccination decisions of undergraduate students (N=103) and non-student adults (N=192). In both groups a clear majority chose to vaccinate when disease and vaccination risks were balanced. Experiments 2 and 3 identify several problems associated with the measures used in earlier studies, and show how these problems could have led to the misleading appearance of majority anti-vaccination preferences. In our data, vaccination intentions appear to be less a function of generalized preferences for action or inaction than they are of the regret respondents expect to feel if vaccination or non-vaccination were to lead to a poor outcome. Regret-avoiding choices led some respondents to favor vaccination, others to oppose it. In two follow-up studies, few respondents mentioned action or inaction per se in explaining their choices. We conclude that there is no convincing evidence that a generalized “omission bias” plays any important role in vaccination decisions.     

Pleasure and pressure based prosocial motivation: Divergent relations to subjective well-being

We propose two fundamentally different motives for helping: gaining pleasure and fulfilling one’s duty (“pressure”). Using the newly developed Pleasure and Pressure based Prosocial Motivation Scale, we demonstrated the distinctiveness of pleasure and pressure based prosocial motivation in three studies. Although the two motives exhibited different relations to a variety of personality characteristics, they were similarly related to trans-situational helping. Of particular interest, pleasure based prosocial motivation was positively related to self-actualization, self-esteem, life satisfaction, and positive affect and negatively related to negative affect. On the contrary, pressure based prosocial motivation was unrelated to self-actualization, self-esteem, life satisfaction, and positive affect but positively related to negative affect. These results qualify research showing that prosocial life goals generally increase subjective well-being.     

Personality, political skill, and job performance

Based on the socioanalytic perspective of performance prediction [Hogan, R. (1991). Personality and personality assessment. In M. D. Dunnette, L. Hough, (Eds.), Handbook of industrial and organizational psychology (2nd ed., pp. 873–919). Chicago: Rand McNally; Hogan, R., & Shelton, D. (1998). A socioanalytic perspective on job performance. Human Performance, 11, 129–144.], the present study tests whether motives to get along and to get ahead produce greater performance when interactively combined with social effectiveness. Specifically, we investigated whether interactions of the Five-Factor Model constructs of agreeableness and conscientiousness with political skill predict job performance. Our results supported our hypothesis for the agreeableness-political skill interaction. Additionally, after correcting for the unreliability and restricted range of conscientiousness, we found that its interaction with political skill also significantly predicted job performance, although not precisely as hypothesized. Implications of the results and directions for future research are provided.     

Regret aversion and decision process quality: Effects of regret salience on decision process carefulness

A considerable amount of past research has examined the effects of regret aversion on which options decision makers choose. However, past research has largely neglected to address the effect of regret aversion on the decision process. We conducted five experiments to examine the effect of making regret salient on decision process quality. We predicted that increased regret aversion would lead to more careful decision processing. The results consistently supported this prediction across the different decision situations, incentive structures, regret salience manipulations, and dependent variables used. In all experiments making regret salient led decision makers to take significantly longer to reach a decision. In Studies 2a, 2b, and 4 it also led participants to collect significantly more information before making a choice. Implications and future directions are discussed.     

Priming of semantic classifications: Late and response related,or earlier and more central?

Priming of semantic classifications may occur because of response-related priming or because of priming at a more central locus. To separate these two possibilities, we randomly intermixed adjectives and first names, using a response window procedure. Participants decided whether the adjectives were positively or negatively valenced and whether the names were male or female. Each of these kinds of targets was preceded by adjective or name primes associated with responses that either matched or mismatched the correct response to the target. Results showed that priming of semantic classification involves two components: a major response-related one, modulated by prime visibility and prime—target repetition, and a smaller component with a more central locus that is less susceptible to context effects.