Articles tagged with Human Aggression
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Researchers at McMaster University found that extreme weather events like hurricanes can drive the evolution of more aggressive spiders in storm-prone regions. Colonies with more aggressive foraging responses produce more egg cases and have more spiderlings survive into early winter after tropical cyclones.
Researchers found that herring gulls take 21 seconds longer to approach food when a human is watching, suggesting that just observing the birds can reduce food-snatching. The study highlights the importance of modifying individual behavior to manage gull-nuisance issues in urban areas.
A Brazilian study found that cannabidiol attenuates social isolation-induced aggression in mice by facilitating the activation of serotonin and CB1 receptors. The researchers used a resident-intruder test model to demonstrate that lower doses of cannabidiol inhibit aggressive behavior, while higher doses have little effect.
Research from Iowa State University found that playing Minecraft fosters creative freedom and increases creativity. Players given the freedom to play Minecraft without instruction were most creative, suggesting that autonomy is crucial for unlocking creative potential.
Researchers found that social isolation triggers aggression in spiders after they disperse, reversing their initial social behavior. This discovery challenges the long-held assumption that aggression is a precursor to dispersal in spiderlings.
Researchers found that at least one bystander intervenes in every public fight to help the victim, with increasing numbers leading to more interventions. The study, which analyzed CCTV footage from three cities, suggests that intervention is a human universal and can be encouraged through crime prevention efforts.
A multidisciplinary team at LSU Health is using two new research techniques to study the link between obesity and breast cancer. They will observe breast tumor development in real-time using a biomimetic tissue-engineered 3D culture system, and analyze the extracellular matrix of breast cancer tumors using decellularization technique.
A Rutgers study found that terminally ill patients who request doctors make decisions often receive more aggressive final treatments, even if it lessens their quality of life. The research suggests that physicians' attitudes and patients' beliefs play a significant role in end-of-life care decisions.
A meta-analysis found that attributing hostile intent is positively related to aggression, with the strongest link in emotionally engaging situations. This general thinking tendency guides how children process information across various contexts.
A new study found that black men with low-risk prostate cancer are 16% less likely to adopt active surveillance than non-black men, despite similar rates of overall active surveillance. The disparity is attributed to socioeconomic and insurance barriers that deter black patients from accessing follow-up care.
Studies presented at ESMO Breast Cancer Congress 2019 found that young women with breast cancer tend to have more aggressive tumour subtypes, including triple negative and HER2 positive types. However, proper treatment according to guidelines resulted in good survival rates and local recurrence outcomes.
A study by Washington State University researchers found that college men who frequently attend parties or go to bars are more likely to be sexually aggressive compared to those who don't. The combination of alcohol and the setting where drinking takes place had a major impact on reported aggressive tactics used.
Researchers found that high testosterone and cortisol levels are associated with increased aggression in boys, while girls with high empathy levels exhibit lower aggression. The study suggests a complex interplay between hormones and empathy in shaping aggressive behavior in children.
Male chimpanzees exhibit increased urinary cortisol levels during unstable dominance periods, indicating psychosocial stress despite lower aggression rates.
Researchers found that spillover-aggression from parents towards each other can cause children to exhibit greater fear during future incidents of interparental aggression. Spillover-exposed children are more likely to engage in their parents' conflicts by attempting to solve the problem or making peace.
Researchers found that docile societies outperform aggressive ones when resources are scarce, while the opposite occurs when aggression dominates. This trade-off suggests a balance between domination and survival is key to successful spider societies.
The study found that male Asian elephants exhibited higher levels of aggressiveness and lower sociability compared to females. In contrast, female elephants displayed more agreeable personalities and consistent social behaviors within their family units.
Research by Eleonora Zakharian and colleagues reveals that the absence of TRPM8 leads to increased aggression and hypersexuality in mice. The team found that males with TRPM8 knockout exhibit violent behavior, while females show increased sexual appetite and sniffing behaviors.
A new Prediction Risk Score developed by researchers predicts suicidal behavior more accurately than psychiatric diagnoses alone. The score combines factors such as depressive symptom severity, variability, and childhood abuse to identify high-risk individuals.
Climate change is expected to increase the likelihood of violence through three indirect effects: increased irritability, economic instability, and eco-migration leading to intergroup conflicts. These factors can create a perfect storm for political violence, civil wars, or wars between nations.
Researchers found that female crickets choose males who lost fights over alpha males for mating. In a study using the cricket Gryllus bimaculatus, females preferred males with lower aggression levels during courtship.
A computer-based decision aid did not alleviate symptoms of depression, anxiety, or post-traumatic stress for family caregivers making end-of-life decisions. The tool's recommendations were often disregarded in favor of more aggressive treatment options.
A study of 2,223 children found that physical aggression typically declines before elementary school but a small proportion have high problems into adolescence, increasing risk for violent crime and social maladjustment. Interventions during pregnancy and early childhood may help prevent high physical aggression in high-risk families.
Research found that sadistic individuals, including everyday people, experience negative mood after engaging in aggressive acts. This challenges the notion that sadism is solely linked to pleasure.
The five-year study will investigate the use of electroconvulsive therapy (ECT) to treat severe agitation and aggression in people with Alzheimer's disease. Researchers will compare ECT treatment plus standard therapies to standard therapies alone for individuals with moderate-to-severe Alzheimer's dementia.
Researchers have identified a brain region that controls both social memory and aggression, revealing a complex link between the two behaviors. The discovery sheds light on psychiatric disorders such as schizophrenia, where altered CA2 function may contribute to abnormal social behaviors.
A recent study by Katherine Stavropoulos, an assistant professor at the University of California - Riverside, has confirmed a neural basis for cute aggression. The research found that the brain's reward system and emotion system are involved in the phenomenon, with participants experiencing higher levels of cute aggression towards cute...
A new study by the American Psychological Association finds that men with sexist attitudes may underestimate their power in relationships, leading to more aggressive behavior. The research suggests that this can create a vicious cycle, reinforcing stereotypes and damaging relationships.
The NIH BRAIN Initiative Cell Census Network has released its first data set, featuring the molecular identities of over 1.3 million mouse brain cells and anatomical data from 300 brains. This comprehensive characterization aims to integrate molecular, anatomical, and functional data on cell types in mice, humans, and non-human primates.
A study by Duke-NUS researchers found that brain-derived neurotrophic factor (BDNF) and its receptor tropomyosin receptor kinase B (TrkB) affect social dominance in mice. The research sheds light on the neurobiology of aggression and bullying.
A Dartmouth analysis of multiple studies found that playing violent video games is associated with increases in physical aggression over time. The effect varies across ethnicity, with the largest observed among white participants and some noted among Asians, but no effect seen among Hispanics.
A University of Iowa-led research team identified a brain marker associated with aggression in toddlers, including smaller P3 brain waves accompanying tone changes. This finding could help diagnose aggressive behavior in young children before it becomes ingrained.
Researchers identified caspase-2 as a critical driver of non-alcoholic steatohepatitis (NASH), a chronic and aggressive liver condition. The study found that an inhibitor of caspase-2 could provide an effective way to treat or prevent NASH, possibly even reversing early symptoms.
A Caltech study shows that people can accurately judge a politician's honesty based on their face width. Researchers found that politicians with wider faces were perceived as more corruptible, but it's unclear if they're actually more corrupt. The study suggests that facial appearance may play a role in corruption perceptions.
Scientists discovered a link between polysialic acid and aggressive behavior in mice with psychiatric disorders. The absence of the enzyme ST8SIA2 reduced fear processing and anxiety, leading to abnormal aggression.
The RESPOND study will explore the role of social stressors and genetics in developing prostate cancer among African-American men. The study aims to recruit 10,000 participants nationwide to understand the factors contributing to poor outcomes in this disease.
Researchers have identified 40 genes related to aggressive behavior in humans and mice, shedding light on the genetic basis of aggression. The study suggests a shared genetic base between aggressiveness in children and adults and Attention Deficit Hyperactivity Disorder (ADHD), as well as with major depression.
Researchers found relational aggression, not relational bullying, associated with increases in victimization in early childhood studies. The findings suggest a need to differentiate between the two behaviors in interventions aimed at general aggression.
Researchers found that humans can estimate physical formidability from nonverbal vocal cues, including aggressive roars and speech. Listeners accurately judged vocalizers' strength in 88% of trials, with men perceiving themselves as stronger than women in similar situations.
Researchers found evidence of coalitional play fighting among hunter-gatherer societies, suggesting it was a universal feature of human psychology. This type of play involved coordinated action and non-lethal physical force, mirroring skills used in lethal raiding.
A study found that aggressive mice showed increased dominance and aggression when ΔFosB was overexpressed, suggesting a link between this protein and violent behavior. The research suggests targeting ΔFosB may reduce aggression by modifying the brain's reward system.
A Journal of Neuroscience study found that a transcription factor called FosB plays a key role in regulating aggressive behavior in mice. Increased FosB levels were linked to increased aggression intensity and dominance.
Researchers examined neuropeptide changes in aggressive and non-aggressive Africanized honeybees, finding that specific peptides can trigger aggression. The study provides new insights into the neurological basis for honeybee behavior, highlighting the complex interplay between genetic and environmental factors.
A new study found that children and adolescents exposed to environmental risks like urbanization, abuse, or substance use are more likely to become violently aggressive adults. The research, led by Hannelore Ehrenreich, suggests epigenetic changes may play a role in this development.
A PLOS ONE study found that listening to an aggressive conversation nearby increases a person's comfortable interpersonal space by up to 2.5 seconds
New research reveals that frequent workplace aggression can cause nurses to behave badly towards others, disregarding professional codes. The study found that anger and fear triggered by being targeted can lead to misconduct, while sadness is only associated with health symptoms.
A recent study found that hostility towards members of other ethnic groups is more often imitated than hostility towards co-ethnics. The study examined adolescents from schools in eastern Slovakia and their behavior towards the Roma minority, finding a significant influence on their choices.
Researchers at Boston University School of Medicine identified ubiquitin-fusion degradation 1 (UFD1) as a key protein in aggressive T-cell leukemia. Reducing UFD1 levels by 50% inhibited leukemia development without impacting healthy tissues.
A systematic review of 49 randomized trials involving 23,098 participants found that various self-regulation interventions were effective in promoting emotional control, social skills, and learning. The review suggests that these programs can help maintain health and well-being throughout life.
Research suggests that narcissists are more likely to engage in 'mate poaching' - making a play for someone already in a relationship - due to their traits of selfishness and arrogance. However, they don't discriminate between single and taken individuals, instead going after whoever appeals to them.
Primary school children with lower executive function skills are more likely to show increased aggression in middle childhood, including physical and relational types. The study suggests that improving executive function could reduce aggression, and training programs may be effective in achieving this.
A new study found that daily violent video game play does not lead to increased aggression levels in adults. Researchers compared participants who played violent games to those who played life simulation games or didn't play at all, and found no significant differences in aggression levels over time.
Researchers at the University of Turku studied Asian elephant personalities in a semi-captive population in Myanmar and identified three key factors: Attentiveness, Sociability and Aggressiveness. The study provides insight into how personality develops in long-lived, social species and can inform conservation efforts.
Researchers found that self-defeating humour is associated with greater levels of psychological well-being, particularly in terms of happiness and sociability. The study challenges previous research suggesting negative effects of self-defeating humour.
Research on 555 sets of twins found that aggression in children is influenced by both genetics and the environment. At age 6, genetic factors contribute equally to proactive and reactive aggression, while environmental factors take over after age 12.
A VCU-led study found that individuals who exhibit sadistic tendencies are more likely to seek revenge against those who have wronged them. The research identified a multidimensional link between physical aggression, impulsivity, and aggressive pleasure in relation to revenge-seeking behavior.
A global survey of over 30,000 adults found that spirits are most frequently associated with feelings of aggression, while beer and red wine are linked to relaxation. The study suggests that understanding the emotional factors behind alcohol preference is crucial for addressing alcohol misuse.
A study by IBS scientists found that mice develop 'social rules' to allocate rewards, promoting long-term benefits for both mice. The researchers used brain stimulation to induce a sense of pleasure, and observed that 60% of the mice waited for their turn, leading to more rounds and total reward time.
Research found a 3% decrease in assaults on Mondays after the start of Daylight Saving Time, challenging previous assumptions about sleep deprivation's impact on crime. The study suggests that increased sleep may be associated with more offending behavior, but internal biases and short-term effects are likely causes.
A two-week intervention program focusing on reducing risky behavior was found to be effective in reducing aggression and future incarceration rates among clinically aggressive juvenile offenders. The program, PHAT Life, taught youth to identify triggers for high-risk behavior and develop coping strategies.