Brain imaging of tongue-twister sentence comprehension: twisting the tongue and the brain

This study used fMRI to investigate the neural basis of the tongue-twister effect in a sentence comprehension task. Participants silently read sentences equated for the syntactic structure and the lexical frequency of the constituent words, but differing in the proportion of words that shared similar initial phonemes. The manipulation affected not only the reading times and comprehension performance, but also the amount of activation seen in a number of language-related cortical areas. The effect was not restricted to cortical areas known to be involved in articulatory speech programming or rehearsal processes (the inferior frontal gyrus and anterior insula), but also extended to areas associated with other aspects of language processing (inferior parietal cortex) associated with phonological processing and storage.     

How the brain processes causal inferences in text

Abstract— Theoretical models of text processing, such as the construction-integration framework, pose fundamental questions about causal inference making that are not easily addressed by behavioral studies. In particular, a common result is that causal relatedness has a different effect on text reading times than on memory for the text: Whereas reading times increase linearly as causal relatedness decreases, memory for the text is best for events that are related by a moderate degree of causal relatedness and is poorer for events with low and high relatedness. Our functional magnetic resonance imaging study of the processing of two-sentence passages that varied in their degree of causal relatedness suggests that the inference process can be analyzed into two components, generation and integration, that are subserved by two large-scale cortical networks (a reasoning system in dorsolateral prefrontal cortex and the right-hemisphere language areas). These two cortical networks, which are distinguishable from the classical left-hemisphere language areas, approximately correspond to the two functional relations observed in the behavioral results.     

Ambiguity in the brain: what brain imaging reveals about the processing of syntactically ambiguous sentences

Two fMRI studies investigated the time course and amplitude of brain activity in language-related areas during the processing of syntactically ambiguous sentences. In Experiment 1, higher levels of activation were found during the reading of unpreferred syntactic structures as well as more complex structures. In Experiments 2A and 2B higher levels of brain activation were found for ambiguous sentences compared with unambiguous sentences matched for syntactic complexity, even when the ambiguities were resolved in favor of the preferred syntactic construction (despite the absence of this difference in previous reading time results). Although results can be reconciled with either serial or parallel models of sentence parsing, they arguably fit better into the parallel framework. Serial models can admittedly be made consistent but only by including a parallel component. The fMRI data indicate the involvement of a parallel component in syntactic parsing that might be either a selection mechanism or a construction of multiple parses.     

The Happiness of Giving: Evidence from the German Socioeconomic Panel That Happier People Are More Generous

This study explores the causal direction between happiness and charitable giving. Through the application of Cohen’s path analysis, the main purpose of the study is to find evidence which of the possible causal directions—the one from giving to happiness or from happiness to giving—is the more dominant one. To that aim the authors use data from the German Socio-Economic Panel 2009/10. In a sample of 6906 donors, the relationships between monetary giving and life satisfaction were assed. Furthermore, we controlled for different variables such as age, gender, and marital status. Contradictory to the hypotheses development, the results of the Cohen’s path analysis indicate that the causal direction from happiness to charitable giving is the more dominant one. Through the study and our initial results we contribute to theory by highlighting the ambiguous causal relationship between the focal constructs and provide a statistical method to investigate such unclear causal relationships. We discuss how happiness, particularly the affective aspect, can be utilized by nonprofit managers to raise fundraising effectiveness and suggest areas for further research.     

Childhood personality predicts long-term trajectories of shyness and aggressiveness in the context of demographic transitions in emerging adulthood

In a 19-year longitudinal study, childhood personality characteristics (assessed by teachers at ages 4 to 6) were significantly related to both initial levels and changes in parental judgments of shyness and aggressiveness. Long-term stability was demonstrated by the fact that overcontrollers had consistently higher scores in shyness and undercontrollers in aggressiveness. However, undercontrollers' shyness and overcontrollers' aggressiveness changed over time from a low to a high level. Also, both types assumed adult social roles, such as leaving the parental home, establishing a first romantic relationship, and getting a part-time job, at a later time than the resilient participants. A mediation analysis indicated that under- and overcontrollers' increasing aggressiveness between age 17 and 23 was due to their longer latency of getting a part-time job. Together, results demonstrate the importance of considering person-environment transactions in explaining both change and stability in personality between childhood and adulthood.     

Autonomy-Connectedness and Gender

The present study aimed to examine gender differences in autonomy-connectedness in a large, Dutch, representative community sample (N?=?2,256). All participants completed the Autonomy-Connectedness-Scale (ACS-30; Bekker and van Assen, J Pers Assess 86:51–60, 2006) with subscales self-awareness (SA), sensitivity to others (SO), and capacity to manage new situations (CMNS), and a scale measuring demographic factors. We found much higher SO in women than in men, and slightly higher scores of men on SA and CMNS. Associations between SO and socio-demographic variables related to caring for others could be completely explained by gender, while the associations between SA and CMNS with socio-economic independence variables could only partly be explained by gender. ACS-30 norm scores are presented, and clinical implications of our results are discussed.     

Perseverative and compulsive-like staring causes uncertainty about perception

Earlier studies have found that perseverative checking provokes memory distrust for checked stimuli, suggesting that compulsive checking is a counter-productive strategy to increase memory confidence. Obsessive Compulsive (OC) uncertainty also occurs for functions other than memory, like perception. Uncertainty about perception in OC patients gives rise to prolonged attending to the issues that patients feel uncertain about. In an experiment with 40 healthy volunteers, it was tested whether OC-like, perseverative (visual) attending induces OC-like experiences of dissociation and perceptual uncertainty. Participants had to look at an object (a gas stove or a light bulb) during a pre-test and a post-test. In between these tests, participants in the experimental condition were asked to stare at an object that was the same as the to-be-looked-at object during the pre/post-tests. Participants in the control condition stared at an object that was different from the object they looked at during pre/post-test. Both in the experimental and control conditions, dissociation was observed; the effects were equally strong. Critically, with regards to OC-like perceptual uncertainty, the effects were significantly stronger in the experimental condition. The findings indicate that OC-like perseveration induces distrust, not only about memory, but also about perception. To explain the results, we suggest that perseveration interferes with spreading of activation and that cognitive uncertainty (and possibly derealisation) is the experiential end-product of perseveration. It is suggested that all forms of OC perseveration share such interference and that all undermine confidence in cognitive operations.     

Take it or leave it for something better? Responses to fair offers in ultimatum bargaining

We investigated if responders accept a 50–50 split in a modified version of the ultimatum game, in which rejection yields a higher payoff (€7) than accepting the equal offer (€5). Therefore, the decision to accept the 50–50 split in this modified ultimatum game cannot be perceived as a self-interest act, as opposed to the standard game, in which acceptance may reflect resignation in the knowledge that the equal split is the best one can expect. A substantial proportion of responders accepts the equal split in this modified game (Study 1), which clearly establishes egalitarian preferences. Further studies show that the willingness to accept is not an artifact of indifference towards the extra payoff (Study 2), but reflects true concerns for proposers’ outcomes (Study 3).     

An Evaluation of the Relation Between Distress Tolerance and Posttraumatic Stress within a Trauma-Exposed Sample

The present investigation examined the incremental associations between distress tolerance, or the perceived capacity to tolerate emotional distress, and global posttraumatic stress symptom severity as well as symptom cluster severity, beyond the variance accounted for by number of trauma exposure types and negative affectivity. The sample consisted of 140 adults (72 women; M _age = 25.9, SD = 11.1) who endorsed exposure to traumatic life events, as defined by posttraumatic stress disorder diagnostic criterion A (American Psychiatric Association 2000). Participants did not meet diagnostic criteria for current axis I psychopathology. Distress tolerance demonstrated significant incremental associations with global posttraumatic stress symptom severity (p < .01) as well as re-experiencing (p < .05), avoidance (p = .05), and hyperarousal (p < .001) symptom cluster severity. Given the cross-sectional study design, causation cannot be inferred. Theoretical implications and future directions for better understanding associations between distress tolerance and posttraumatic stress are discussed.