Evidence for a motor mechanism of pain-induced aggression instigation in humans

The automatic skeletal motor responses of 20 male and 20 female student subjects (aged 20–36) receiving a painful stimulation (electric shock) were studied by examining voluntary concomitant extensions and flexions of the arm. These movements were either of long duration, allowing for an on-line control of their execution or, of short duration, requiring extensive pre-programming. Subjects were instructed either to push or to pull a lever upon receipt of an acoustic signal, which was paired or unpaired with an electric shock. Latencies for long duration movements (regardless of direction) were reduced by reception of painful stimulation. Latencies of short duration extensions and flexions were respectively reduced and increased by painful stimulation. Latencies of short duration movements were larger for females than males, regardless of movement direction. These data suggest that painful stimulation elicits automatic movements which affect programming of the termination of simultaneous voluntary movements. Implications of these findings for the study of aggressive behavior are discussed. © 1994 Wiley-Liss, Inc.     

Defensive reactions of “wild-type” and “Domesticated” wild rats to approach and contact by a threat stimulus

Selective breeding of wild rats over many generations on the basis of low or high defensive threat and attack to human approach and contact has produced highly polarized “domesticated” and “wild-type” animals. Because the selection procedure selectively involves these two defense patterns, and these clearly differ in the two groups, it is of interest to determine if other, nonselected, defensive behaviors to threat stimuli also change. “Domesticated” and “wild-type” rats of the thirty-fifth generation were run in a fear defense test battery (F/DTB) to systematically evaluate defensive behaviors to a variety of present threat stimuli. “Domesticated” rats showed reduced avoidance and slower flight speed to an approaching experimenter, reduced jump/startle response to handelap and dorsal contact, less vocalization and boxing to vibrissae stimulation or to an anesthetized conspecific, and reduced defensiveness to an attempted pickup by the experimenter. These results indicate that selective bi-directional breeding for defensive threat and attack to human approach and contact produces group differences in a variety of defensive behaviors, and in defensiveness to stimuli other than those on which the selection was based. © 1994 Wiley-Liss, Inc.     

Self-protection and growth as the motivational force behind majority group members' cultural adaptation and discrimination: A parallel mediation model via intergroup contact and threat

What motivates majority group members to adapt to or reject cultural diversity? Considering the relevance of personal values on our attitudes and behaviours, we inspected how self-protection and growth predict levels of discriminatory behavioural and cultural adaptation intentions towards migrants via intergroup contact and perceived intergroup threats, simultaneously (i.e., parallel mediation). Specifically, positive contact between groups is known for reducing prejudice through diminishing perceived intergroup threats. Yet current research emphasises the role of individual differences in this interplay while proposing a parallel relationship between perceived intergroup threats and contact. Also by inspecting cultural adaptation and discriminatory behavioural intentions, the present study examined more proximal indicators of real-world intergroup behaviours than explored in past research. Using data from 304 US Americans, structural equation modelling indicated a good fit for a parallel mediation model with growth relating positively to cultural adaptation intentions and negatively to discriminatory behavioural intentions through being positively associated with intergroup contact and negatively with perceived intergroup threats, simultaneously. The reverse was found for self-protection. These findings stress that personal values constitute a relevant individual difference in the contact/threats-outcome relationship, providing a motivational explanation for majority group members' experience of cultural diversity in their own country.     

Judgments of marital rape as a function of honor culture,masculine reputation threat,and observer gender: A cross-cultural comparison between Turkey,Germany, and the UK

Previous research has shown that there is higher tolerance of violence against women in cultures with salient gender-specific honor norms, especially when the violence occurs in intimate relationships and in response to threat to male honor. The present cross-cultural study (N = 398) extended these findings to sexual aggression (i.e., marital rape) by comparing participants from a culture that emphasizes honor (Turkey) and participants from cultures without strong honor traditions (Germany and Britain). Turkish participants blamed the victim and exonerated the perpetrator more than did German and British participants. In all cultural groups, participants blamed the victim and exonerated the perpetrator more when the husband's reputation was threatened than in the absence of such threat, and in all cultural groups, men blamed the victim and exonerated the perpetrator more than women. Yet, the effect of masculine reputation threat and this pattern of gender differences were somewhat more pronounced among Turkish than German or British participants. Results exploring the predictive role of honor norms at the individual level beyond rape myth acceptance and traditional gender role attitudes revealed that honor norms were the primary predictor of rape perceptions and blame attributions in Turkey (an honor culture), but not in Germany and Britain (dignity cultures) where rape myth acceptance was the strongest predictor. These results provide insights into the cultural factors influencing marital rape judgments in ways that may undermine victim's well-being and fair handling of rape cases, and highlight the domains most urgently in need of potential intervention.     

Right-Wing Ideology as a Predictor of Collective Action: A Test Across Four Political Issue Domains

Despite a vast literature documenting motivations for collective action, the role of sociopolitical ideologies, including right-wing ideologies, in predicting collective action is underresearched. Literature on right-wing ideological beliefs suggests that those higher in right-wing authoritarianism (RWA) or social dominance orientation (SDO) hold specific attitudes or endorse specific policies, in part, because of factors such as perceived fear-based threat or empathy. In the present research, structural equation modeling (SEM) was run on pooled data from a diverse Canadian university sample and two American adult samples (total N = 1,469). Participants completed measures of RWA, SDO, fear-based threat, empathy, and domain-specific collective action. Results showed that RWA and SDO both related positively to collective action targeting societal moral breakdown but negatively to collective action aimed at equalizing race relations or fighting climate change. Whereas the indirect effects of right-wing ideologies via fear-based threat or empathy were significant in all four domains for SDO, the indirect effect of RWA was only significant in the climate change domain. Implications are discussed.     

“They've Put Nothing in the Pot!”: Brexit and the Key Psychological Motivations Behind Voting 'Remain' and 'Leave'

In June 2016, the United Kingdom voted to leave the European Union. Voting followed a general trend: disadvantaged areas of the United Kingdom tended to vote “leave,” and more affluent areas tended to vote “remain.” This project investigates the psychological variables underlying this overall trend by distinguishing four psychological motivations: the need for justice, threat reduction needs, need to belong, and the need for control. Participants were recruited from different areas across Greater Manchester (N = 158). A survey assessed voting preference, socioeconomic status, collective relative deprivation (CRD), perceptions of threat from immigration, European and British identification, sense of control in life, and relative gratification. Discriminant function analysis showed that leave voting was characterized by greater realistic threat, symbolic threat, CRD, and British identification. Remain voting was characterized by strong European identification. Findings highlight that a need for justice, threat-reduction needs, and identity needs were key predictors of voting behavior.     

No indication that the ego depletion manipulation can affect insight: a comment on DeCaro and Van Stockum (2018)

Abstract

Recently, DeCaro and Van Stockum have suggested that ego depletion following intensive self-control can improve insight problem-solving; this finding was interpreted in terms of insight relying on decreased control over attention and memory. However, DeCaro and Van Stockum used three variants of the single matchstick arithmetic problem. Experiment 1 involved low sample and non-standard problem application, while the more powered Experiment 2 yielded a surprisingly low solution rate. These facts made both studies problematic and called for their replication. In the two present studies, the DeCaro and Van Stockum ego-depletion manipulation and their matchstick problems were administered to a total of 316 people. Furthermore, various other insight problems, subjective ratings of insight experience, analytical problems and executive control tests were applied. The key result was that no reliable effect of ego depletion could be found for any of these measures.     

The Decades of Life: Relocating Erikson's Stages

Erik H. Erikson's life cycle schema consists of eight stages. Three are located in infancy and early childhood (ages 1–5), one in childhood (5–12), one in adolescence, and three in adulthood. This essay proposes a relocation of the stages in terms of decades. The eight psychosocial crises in Erikson's model are retained, but each crisis and its resolution is the central theme of a decade of life. This relocation of Erikson's stages orients the life cycle schema more toward adulthood than to early childhood, as six of the stages now occur in the adult years. It also reflects Erikson's theoretical shift in emphasis from the ego to the sense of I in his later writings. A proposal for how the ninth and tenth decades fit into the schema is also offered.