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OBJECTIVE Laughter conveys important information that supports social communication and bonding. Research suggests that unique acoustic properties distinguish laughter that promotes affiliation from laughter that conveys dominance, but little is known about potential individual differences in laughter interpretation or contagion based on these specified social functions of laughter. Psychopathy is associated with both affiliative deficits (e.g., lack of empathy and impaired social bonding) and behaviors that assert social dominance (e.g., manipulativeness). Thus, relationships between psychopathic traits and impaired laughter interpretation or contagion could give insight into etiological pathways to psychopathy. METHOD In two studies conducted with four independent samples (total N = 770), participants categorized laughter clips that varied in the degree of affiliation or dominance conveyed. RESULTS Participants overall drew rich and accurate social inferences from dominant and affiliative laughter and modulated their interest in joining in with laughter based on the type and degree of affiliation and dominance conveyed. However, individuals higher in psychopathic traits failed to distinguish between laughter types and did not modulate their level of engagement based on laughter features. CONCLUSIONS The results suggest a potential mechanism that underlies the broader social difficulties associated with psychopathic traits.

The COVID-19 pandemic has dramatically altered family life, but whether family exposures to and worries about the COVID-19 pandemic has impacted child conduct problems (CP) and callous-unemotional (CU) traits is unknown. Thus, we evaluated 303 parents (Mage = 38.04; SD = 5.21; 92.4% biological mothers) and children (Mage = 6.43; SD = 2.13; 51.8% female) during a four-month period early in the pandemic. We examined associations between parental exposures to COVID-19, parental worries about the pandemic, harsh and warm parenting practices, and child CP and CU traits. Although more parental worries were not directly related to parenting practices, more worry about COVID-19 was specifically related to higher levels of child CP, particularly parental worries about themselves or family members contracting the virus. Our findings add to a growing literature demonstrating the burden that the pandemic has placed on families and its implications for children’s mental health. Supplementary Information The online version of this article (10.1007/s10578-020-01109-y) contains supplementary material, which is available to authorized users.

Psychopathy is characterized by affective and interpersonal deficits, deviant lifestyle, and antisocial behaviors. Much research has been dedicated to understanding the impairments in reinforcement learning, fear conditioning, and sensitivity to threat, distress, or fear in others, which are thought to underpin psychopathic traits. Fewer studies have examined deficits in affiliative processes, which could provide insight into mechanisms giving rise to the impairments in social bonding, closeness with others, and cooperation that also characterize individuals high on psychopathy. The current study examined whether reduced sensitivity to affiliation was related to psychopathic traits among 407 adults from the community (female, 59%). Sensitivity to affiliation was modeled as a latent construct capturing item-level variance shared across 4 measures that assessed sensitivity to emotional and physical cues of affiliation, including stimuli presented as videos or images, and via self-report ratings about sensitivity to positive affiliative and affective cues. Results indicated that lower sensitivity to affiliation was related to higher total psychopathy scores. In particular, in models parsing the overlap of psychopathy factor and facet scores, lower sensitivity to affiliation was uniquely related to higher Factor 1 and affective facet scores, as well as higher scores on a measure of callous-unemotional traits. Our findings provide support for the existence of important socioaffiliative and motivational deficits that may underpin the affective features of psychopathy and speak to the potential to target such mechanisms in interventions and treatments to reduce psychopathic traits. (PsycInfo Database Record (c) 2020 APA, all rights reserved).