Regret intensity, diurnal cortisol secretion, and physical health in older individuals: evidence for directional effects and protective factors

Two studies were conducted to examine the associations between life regrets and health-relevant variables among older adults. Study 1 explored whether intense experiences of regret would be associated with a health-relevant biological process (i.e., diurnal cortisol secretion) and acute physical problems (N = 183). In Study 2, a group of 103 older adults was followed over a period of 3 months, and changes in cold symptoms and sleep problems were examined. Study 2 incorporated an experimental manipulation, targeted at engaging participants in adaptive social- cognitive processes through writing. The results of Study 1 showed intense life regrets to be associated with a larger volume and a steeper morning rise of cortisol secretion and with higher levels of acute physical symptoms. Study 2 demonstrated that levels of regret intensity generally declined only in the experimental group, whereas certain aspects of regret intensity remained stable in the control group. In addition, the intervention evidenced a beneficial effect on the association between initial regret intensity and increased sleep problems over time.     

When constituencies speak in multiple tongues: The relative persuasiveness of hawkish minorities in representative negotiation

Although constituencies often consist of opposing factions, we know little about the way such opposing factions influence the representative’s negotiation strategy. This study addressed this issue: Representatives negotiated as sellers on behalf of a group consisting of hawkish (competitive) and dovish (cooperative) factions. Experiments 1–3 showed that a minority of hawks was sufficient to influence the representatives to acting in a competitive way; only when all constituents unanimously advocated a cooperative strategy were representatives more conciliatory towards their negotiation partner. These tendencies did not differ as a function of the representatives’ pro-social versus pro-self value orientation, or the unanimity versus majority rule putatively used in the constituency to accept of reject the representative’s negotiated agreement. We conclude that hawkish minorities are persuasive and influential because representatives accord more weight to hawkish than to dovish messages.     

Share and Share Alike or Winner Take All?: The Influence of Social Value Orientation upon Choice and Recall of Negotiation Heuristics

Two experiments test the hypothesis that social value orientation influences choice and recall of heuristics in individuals preparing for negotiation. Consistent with predictions, Study 1 shows that in the preparation phase, negotiators with a prosocial value orientation choose more cooperative heuristics (e.g., “equal split is fair”) than competitive heuristics (e.g., “your gain is my loss”) while negotiators with a competitive social value orientation do the reverse. Negotiators with an individualistic social value orientation do not discriminate in their choice between cooperative and competitive heuristics. Study 2 shows that following preparation, prosocial negotiators recall more cooperative than competitive heuristics while individualists and competitors do the reverse. Additional measures suggest that prosocial negotiators prefer cooperative heuristics because these are seen as morally appropriate, whereas individualists and competitors prefer competitive heuristics because these are seen as effective.     

Ethical and Social Aspects of Neurorobotics

Science and Engineering Ethics - The interdisciplinary field of neurorobotics looks to neuroscience to overcome the limitations of modern robotics technology, to robotics to advance our...     

Increased levels of conditioned fear and avoidance behavior coincide with changes in phosphorylation of the protein kinase B (AKT) within the amygdala in a mouse model of extremes in trait anxiety

Patients diagnosed for anxiety disorders often display faster acquisition and slower extinction of learned fear. To gain further insights into the mechanisms underlying these phenomenona, we studied conditioned fear in mice originating form a bi-directional selective breeding approach, which is based on elevated plus-maze behavior and results in CD1-derived high (HAB), normal (NAB), and low (LAB) anxiety-related behavior mice. HAB mice displayed pronounced cued-conditioned fear compared to NAB/CD1 and LAB mice that coincided with increased phosphorylation of the protein kinase B (AKT) in the basolateral amygdala 45 min after conditioning. No similar changes were observed after non-associative immediate shock presentations. Fear extinction of recent but not older fear memories was preserved. However, HAB mice were more prone to relapse of conditioned fear with the passage of time. HAB mice also displayed higher levels of contextual fear compared to NAB and LAB mice and exaggerated avoidance following step-down avoidance training. Interestingly, HAB mice showed lower and LAB mice higher levels of acoustic startle responses compared to NAB controls. The increase in arousal observed in LAB mice coincided with the general absence of conditioned freezing. Taken together, our results suggest that the genetic predisposition to high anxiety-related behavior may increase the risk of forming traumatic memories, phobic-like fear and avoidance behavior following aversive encounters, with a clear bias towards passive coping styles. In contrast, genetic predisposition to low anxiety-related and high risk-taking behavior seems to be associated with an increase in active coping styles. Our data imply changes in AKT phosphorylation as a therapeutic target for the prevention of exaggerated fear memories.     

Cannabinoid CB1 receptor deficiency increases contextual fear memory under highly aversive conditions and long-term potentiation in vivo

The cannabinoid receptor type 1 (CB1) is abundantly expressed in the central nervous system where it negatively controls the release of several neurotransmitters. CB1 activity plays a crucial role in learning and memory and in synaptic plasticity. In the present study, the role of CB1 was investigated in three different hippocampus-dependent memory tasks and in in vivo hippocampal synaptic plasticity in knockout (CB1-ko) and wildtype mice. There was no difference in short-term and long-term social and object recognition memory between CB1-ko and wildtype mice. In contrast, in background contextual fear conditioning CB1-ko mice showed enhanced freezing levels in the conditioning context and increased generalised contextual fear after a high-intensity conditioning foot shock of 1.5 mA, but not after 0.7 mA. In in vivo field potential recordings in the dentate gyrus, CB1-ko mice displayed a decreased paired-pulse facilitation of the populations spikes, suggesting an altered inhibitory synaptic drive onto hippocampal granule cells. Furthermore, CB1-ko mice displayed significantly higher levels of in vivo long-term potentiation (LTP) in the dentate gyrus. In conclusion, CB1 deficiency leads to enhanced contextual fear memory and altered synaptic plasticity in the hippocampus, supporting the key role of endocannabinoid signalling in learning and memory, in particular following highly aversive encounters.     

Contagious bodies. An investigation of affective and discursive strategies in contemporary online activism

The paper presents an analysis of Climate Justice Fast, a campaign consisting of an international hunger strike against political in action on climate change. Within the theoretical framework of political online activism and theories of affect, we investigate the encoding and decoding of the starving activist bodies in relation to CJF. Our material consists of texts from the CJF website, activist blogs, and two online debates on a large Danish media platform. The methodological approach is discourse analytical and esthetic-affective. In our analysis we outline the different semantic significations of the starving bodies as central signifiers and we investigate the different affective responses to the hunger strike. We furthermore argue that the starved body seems to be relationally powerful, because of both its contagious ability to attune other bodies and its semantic ‘wildness’.     

Proactive climate in a post-reorganization setting: When staff compensate managers' weakness

This study explored the effects of proactive climate on performance in a post-reorganization setting. We hypothesized that proactive climate should have both a direct effect on unit performance and should—in the sense of the “substitutes for leadership” approach—enhance the effect of managers' entrepreneurial attributes (e.g., personal initiative) on unit performance. Hypotheses were tested using data from organizational units, called “centres” (n?=?35), of four recently reorganized public transport organizations. Managers provided ratings of centre performance, and centre members assessed their centre's climate. Proactive climate was positively related with performance. Moderated regression analyses revealed significant interaction effects between proactive climate and some centre manager variables; however, the interaction pattern indicated that proactive climate compensated for a low degree of entrepreneurial attributes.     

Innovation in top management teams: Minority dissent,transformational leadership,and radical innovations

Research among lower level teams suggests that minority dissent stimulates team innovation. We consider the role of CEO transformational leadership in the dissent–innovation relation and study this in Top Management Teams (TMTs). We propose that transformational leaders create a psychologically safe team climate, in which dissenting opinions are used effectively to create radical innovations. Members of 36 TMTs (N = 196) completed a questionnaire to assess minority dissent, transformational leadership, and participative safety. CEOs provided data about the innovations implemented by the team. Results showed that minority dissent was positively related to the number of innovations implemented by TMTs. However, only under high levels of transformational leadership were these innovations radical. It was further found that transformational leadership had this effect because it was positively associated with participative safety. These results indicate that minorities stimulate innovativeness and that through transformational leadership CEOs can create a climate in which minority input is transformed into radical innovations. Implications for TMT performance and team innovation are discussed.