The organization and dissolution of semantic-conceptual knowledge: Is the ‘amodal hub’ the only plausible model?

In recent years, the anatomical and functional bases of conceptual activity have attracted a growing interest. In particular, Patterson and Lambon-Ralph have proposed the existence, in the anterior parts of the temporal lobes, of a mechanism (the 'amodal semantic hub') supporting the interactive activation of semantic representations in all modalities and for all semantic categories. The aim of then present paper is to discuss this model, arguing against the notion of an 'amodal' semantic hub, because we maintain, in agreement with the Damasio's construct of 'higher-order convergence zone', that a continuum exists between perceptual information and conceptual representations, whereas the 'amodal' account views perceptual informations only as a channel through which abstract semantic knowledge can be activated. According to our model, semantic organization can be better explained by two orthogonal higher-order convergence systems, concerning, on one hand, the right vs. left hemisphere and, on the other hand, the ventral vs. dorsal processing pathways. This model posits that conceptual representations may be mainly based upon perceptual activities in the right hemisphere and upon verbal mediation in the left side of the brain. It also assumes that conceptual knowledge based on the convergence of highly processed visual information with other perceptual data (and mainly concerning living categories) may be bilaterally represented in the anterior parts of the temporal lobes, whereas knowledge based on the integration of visual data with action schemata (namely knowledge of actions, body parts and artefacts) may be more represented in the left fronto-temporo-parietal areas.     

Egoistic and Moralistic Self‐Enhancement in the Eye of the Beholder: A Cross‐Informant Study

This study was conceived to assess the agreement between self‐ and other reports of egoistic (E) and moralistic (M) self‐enhancement (SE). A self‐report scale assessing E‐SE and M‐SE was filled out by 304 participants (mean age = 39.11, SD = 10.12, 54% female). The scale, with items worded in third person, was also completed by 304 informants (one for each target participant). Data were subjected to a correlated‐traits correlated‐methods model. Confirmatory factor analysis yielded two distinct factors for both self‐ and other ratings of E‐SE and M‐SE. A significant correlation across raters was observed for each factor. Proportion of trait variance was .58 for E‐SE and .35 for M‐SE. Proportion of method variance was .24 and .41, respectively. E‐SE and M‐SE were substantially correlated within each data source. However, the two measures became orthogonal after method variance was partialed out. Measures of E‐SE and M‐SE include both trait and artifactual components of variance, which are likely to reflect individual differences in the style of self‐presentation and response bias (i.e., tendencies to exaggerate agentic and communal qualities). The trait components of E‐SE and M‐SE represent two unrelated tendencies that can be captured and distinguished not only through self‐judgments, but also by an external observer.     

I don’t care about others’ approval: Dysphoric individuals show reduced effort mobilization for obtaining a social reward

Past research on reduced reward responsiveness in depression and dysphoria has mainly focused on monetary rewards. However, social rewards are important motivators and might be especially impaired in depression. The present study tested the hypothesis that nondysphoric individuals would mobilize more effort during a memory task without a clear performance standard when anticipating social approval for good performance. In contrast, dysphoric individuals were expected to be less sensitive to this reward and to mobilize less effort. Effort mobilization in this 2 (dysphoric vs. nondysphoric) × 2 (no reward vs. social approval) between-persons study was operationalized by participants’ cardiovascular reactivity. Results confirmed that nondysphorics had higher reactivity of systolic blood pressure, diastolic blood pressure, and heart rate when expecting to enter their name in the alleged “best list”, whereas dysphorics had lower cardiovascular reactivity. The present study expands evidence for reduced reward responsiveness in depression and dysphoria from an effort mobilization perspective by demonstrating reduced effort-related cardiovascular reactivity to social rewards.     

Contrasting the effects of suboptimally versus optimally presented affect primes on effort-related cardiac response

Participants worked on an easy versus difficult arithmetic task with integrated happiness versus sadness primes, presented either suboptimally (briefly and masked) or optimally (long and visible). As predicted by the IAPE model (Gendolla in International Journal of Psychophysiology 86:123–135, 2012. doi:10.1016/j.ijpsycho.2012.05.003), the affect primes moderated the task difficulty effect on mental effort in the suboptimal-prime condition: cardiac pre-ejection period response was stronger in the happiness/difficult than in the sadness/difficult condition and tended to be stronger in the sadness-easy than in the happiness-easy condition. These effects were reversed in the optimal-prime-presentation condition, suggesting behavior correction due to controlled prime processing. Moreover, neither suboptimally nor optimally presented affect primes had prime-congruent effects on conscious mood assessed via self-report. The results demonstrate differential effects of implicitly versus explicitly processed affect cues on mental effort and suggest that they can do so without inducing emotional feelings.     

Reduced cognitive control in passionate lovers

Passionate love is associated with intense changes in emotion and attention which are thought to play an important role in the early stages of romantic relationship formation. Although passionate love usually involves enhanced, near-obsessive attention to the beloved, anecdotal evidence suggest that the lover’s concentration for daily tasks like study and work may actually be impaired, suggesting reduced cognitive control. Affect might also contribute to changes in cognitive control. We examined the link between passionate love and cognitive control in a sample of students who had recently become involved in a romantic relationship. Intensity of passionate love as measured by the Passionate Love Scale was shown to correlate with decreased individual efficiency in cognitive control as measured in Stroop and flanker task performance. There was no evidence that affective changes mediate this effect. This study provides the first empirical evidence that passionate love in the early stages of romantic relationship is characterized by impaired cognitive control.     

Disorders of classificatory activity in aphasia

Two nonverbal tasks of classificatory activity ("class inclusion" and "class intersection") were administered to 46 aphasics, 28 normal controls, 19 nonaphasic left-brain-damaged and 17 right-hemisphere-damaged patients in order to study if aphasic patients are more impaired than nonaphasic brain-damaged patients on these two tasks of elementary logic and if a relationship exists within the aphasic patients between inability to perform the tasks of classifiactory activity and impairment of the semantic-lexical level of integration of language. Results were for the most part in line with expectations because aphasics scored worse than normal controls and nonaphasic brain-damaged patients (even if the difference reached the level of statistical significance only on the test of "class intersection") and within the aphasic patients the worst results were obtained by subjects presenting clear signs of semantic-lexical disintegration.     

Posttraumatic Stress Disorder Symptom Clusters and the Interpersonal Theory of Suicide in a Large Military Sample

Prior studies examining posttraumatic stress disorder (PTSD) symptom clusters and the components of the interpersonal theory of suicide (ITS) have yielded mixed results, likely stemming in part from the use of divergent samples and measurement techniques. This study aimed to expand on these findings by utilizing a large military sample, gold standard ITS measures, and multiple PTSD factor structures. Utilizing a sample of 935 military personnel, hierarchical multiple regression analyses were used to test the association between PTSD symptom clusters and the ITS variables. Additionally, we tested for indirect effects of PTSD symptom clusters on suicidal ideation through thwarted belongingness, conditional on levels of perceived burdensomeness. Results indicated that numbing symptoms are positively associated with both perceived burdensomeness and thwarted belongingness and hyperarousal symptoms (dysphoric arousal in the 5‐factor model) are positively associated with thwarted belongingness. Results also indicated that hyperarousal symptoms (anxious arousal in the 5‐factor model) were positively associated with fearlessness about death. The positive association between PTSD symptom clusters and suicidal ideation was inconsistent and modest, with mixed support for the ITS model. Overall, these results provide further clarity regarding the association between specific PTSD symptom clusters and suicide risk factors.     

Reciprocal Relations Between Emotional Self‐Efficacy Beliefs and Ego‐Resiliency Across Time

The present study examined the longitudinal relations of adolescents' self‐reported ego‐resiliency to their emotional self‐efficacy beliefs in expressing positive emotions and in managing negative emotions as they moved into early adulthood. Participants were 239 females and 211 males with a mean age of 17 years (SD = .80) at T1, 19 years (SD = .80) at T2, 21 years (SD = .82) at T3, and 25 years (SD = .80) at T4. A four‐wave cross‐lagged regression model and mediational analyses were used. In a panel structural equation model controlling for the stability of the constructs, reciprocal relationships across time were found between ego‐resiliency and emotional self‐efficacy beliefs related to the expression of positive emotions and to the management of negative emotions. Moreover, the relation between ego‐resiliency assessed at T1 and T3, and ego‐resiliency assessed at T2 and T4, was mediated through emotional self‐efficacy beliefs (at T2 and T3, respectively), and vice versa. The posited conceptual model accounted for a significant portion of variance in ego‐resiliency and has implications for understanding the development of ego‐resiliency.