Social relationships form the foundational infrastructure of human well-being and psychological health. Strong connections help protect against daily stress and build lifelong emotional resilience. Conversely, social isolation is tied to a host of physical and mental health vulnerabilities. While familial interactions and romantic bonds see plenty of academic attention, platonic friendships are just as vital to a long and healthy life.
Friendships offer unique psychological benefits compared to other types of social ties. Relationships with relatives often carry rigid biological or cultural obligations, and romantic partnerships are typically weighted with intense emotional expectations. A platonic friendship is a lower-pressure environment where people can engage in voluntary self-disclosure. These relationships provide a safe arena to practice social skills and find comfortable, judgment-free companionship.
Because establishing a friendship is an entirely voluntary process, a major ingredient in building that relationship is perceived similarity. People naturally gravitate toward strangers who share their personal values, core beliefs, and behavioral quirks. Once a bond is established, friends tend to naturally evaluate each other as being much like themselves. However, specialized personality traits can act as a distorting lens, fundamentally altering how people actively perceive similarities in the individuals around them.
People who report high levels of narcissistic traits view the shared habits in their friendships differently than most people do, often perceiving wide gaps between their own behaviors and those of their peers. Depending on the specific type of narcissism involved, these individuals may artificially elevate their own traits while bringing their friends down, or they may idealize their companions at their own expense. The research describing these relationship dynamics was published in Personality and Individual Differences.
Narcissism introduces a unique tension into the normal rules of everyday social bonding. Typical narcissistic traits include an inflated sense of grandiosity, a constant preoccupation with validation, and a strong assumption of superiority over others. A person displaying these traits genuinely believes they are uniquely special compared to the general population. This deeply held belief creates an internal psychological conflict when it comes to forming close, trusting friendships.
On one side of the conflict, a narcissistic person might want to surround themselves strictly with exceptional, high-status friends. By projecting their own supposed greatness onto their peers, they attempt to validate their own superior social standing. On the other side of the issue, these individuals continually strive to maintain an isolated sense of personal uniqueness. Viewing their friends as total equals might threaten their internal sense of social dominance, leading them to ultimately devalue their chosen companions.
Tobias Altmann at the University of Duisburg-Essen and Destaney Sauls at Michigan Technological University wanted to test how these conflicting internal motivations play out in everyday life. They needed a metric that was highly relevant to human bonding. They chose to focus on how people use humor in social situations as a testing ground for their questions.
Humor is a powerful relational tool that people rely upon to bond with strangers, reduce tension in awkward situations, and establish their particular social identity. Psychologists generally categorize human humor into four distinct approaches based on their intent and target. Two of these are considered adaptive styles, meaning they generally promote mental well-being and social harmony. Two are considered maladaptive styles, meaning they are associated with neuroticism or interpersonal friction.
Affiliative humor is an adaptive style focused on enhancing relationships through inclusive, positive jokes. A person using an affiliative style might recount a funny, shared memory to make everyone at a party feel welcomed. Self-enhancing humor is another adaptive style, characterized by maintaining a humorous, optimistic outlook in the face of inevitable life challenges.
On the maladaptive side, aggressive humor is used to mock, belittle, or disparage other individuals in an attempt to assert social dominance. A person might use sarcastic teasing to bring another person down and artificially elevate their own social standing. Self-defeating humor involves making oneself the target of a joke to gain fleeting approval, often by aggressively highlighting personal flaws.
Altmann and Sauls assessed how individuals evaluate their own regular use of these four styles compared to the habits of their closest friends. The researchers also differentiated between two completely distinct expressions of narcissism that guide outward behavior.
Grandiose narcissism manifests as overt entitlement, outward assertiveness, and a general lack of empathy for others. People with high levels of grandiose narcissism actively project extreme confidence and try to convince the world of their special status. Vulnerable narcissism shares the exact same underlying sense of entitlement, but the outward presentation is completely different. This type of personality is accompanied by deep insecurity, hypersensitivity, and a strong tendency to withdraw socially from uncomfortable situations.
People with vulnerable narcissistic traits oscillate wildly between feelings of intense grandiosity and crippling shame. To capture the real-world effects of both traits in action, the researchers organized two independent cross-sectional assessments. The first data collection format involved 129 participants living in Germany. The second study served to evaluate the patterns in a distinctly different cultural and age demographic, recruiting 131 participants residing in the United States.
In both geographic locations, participants completed detailed psychological questionnaires measuring their self-reported levels of both grandiose and vulnerable narcissism. They were then asked to think of one specific same-sex best friend. Using a modified humor metric, they rated their own comedic preferences and subsequently rated the perceived humor habits of their chosen friend.
By analyzing both sets of behavioral responses, the researchers could look for hidden mathematical discrepancies. They evaluated whether the participants rated themselves higher or lower than their friends across the four different comedic categories.
Most participants without pronounced narcissistic traits reported that their friends utilized social humor in a manner highly similar to their own. However, as self-reported levels of narcissism increased, this reported alignment completely broke down. High narcissism scores were consistently associated with lower rates of perceived similarity in the friendships.
The exact nature of the interpersonal disconnect depended entirely on the flavor of narcissism the participant exhibited. Grandiose narcissism was closely linked to an observable phenomenon the researchers described as self-enhancement. These individuals consistently placed themselves on a behavioral pedestal while looking down at their peers.
Specifically, individuals testing high for grandiose narcissism rated themselves as using more adaptive, positive styles of humor than their companions. At the exact same time, they reported that their friends relied more heavily on maladaptive, aggressive, or self-defeating jokes. They effectively elevated their own social standing while diminishing the positive qualities of their designated best friend.
Participants exhibiting high levels of vulnerable narcissism displayed the exact opposite psychological pattern. They routinely evaluated their friends far more favorably than they evaluated themselves. They assumed their close peers utilized highly adaptive bonding strategies, while they viewed their own humor as largely self-defeating and maladaptive.
These distinct reporting patterns track closely with the underlying, poorly met psychological needs of each narcissism type. Grandiose narcissists operate by minimizing any positive traits in others that might threaten their own perceived dominance. By describing their friends’ jokes as hostile or mean-spirited, they insulate their own egos.
Vulnerable narcissists struggle with deep-seated personal insecurity and may overcompensate by heavily idealizing the people around them. They desperately need constant reassurance from the outside world. This inner turmoil might drive them to artificially elevate the value of their companions, even if it requires distorting their own self-assessment in the process.
While these broad trends appeared in the data sets, the exact mathematical results showed some inconsistencies when comparing the two national samples. The older German sample demonstrated the self-enhancement and friend-enhancement effects across a wide variety of humor styles. The American sample showed similar directional trends but required different calculations to reveal some of the behavioral nuances.
The researchers noted several boundaries to the current analysis that shape how the data should be evaluated. All the information came from cross-sectional, self-reported questionnaires. Humor is an inherently subjective topic, meaning two different people can hear the exact same sarcastic comment and interpret it wildly differently based on their own personal background.
Evaluating another person’s general sense of humor requires blindly guessing at their internal thought processes. This is an abstraction that even lifelong friends might struggle to answer accurately on a standardized test. Future research could investigate this question by having participants generate actual jokes or funny captions, and then asking their friends to rate that direct creative output in real time.
The two sample populations also differed in ways that could alter basic friendship dynamics. The American group was composed largely of young college students living on a campus. Young adults frequently form social bonds simply by geographic proximity, such as sitting next to each other in a crowded classroom.
In contrast, the German sample consisted of older adults with a wider range of educational backgrounds and life experiences. Older individuals might have more freedom to select friends based entirely on shared personality traits and mutual humor preferences rather than simple convenience.
The study authors also required participants to evaluate a same-sex friend to maintain baseline consistency in the survey. Cross-sex friendships often navigate very different social expectations, so the findings may not map perfectly onto mixed-gender relationships. The specific questionnaires used to measure grandiose narcissism also exhibited low internal consistency scoring, an issue common with brief psychological surveys but one that limits total statistical confidence in the metric.
Even with these limitations, the assessments point toward a distinct and fascinating behavioral trend. Extreme personality traits alter the way people experience basic companionship and shared laughter. For those navigating narcissistic tendencies, a friendship serves as a psychological mirror, one that is either polished to reflect their superiority or angled to amplify their deep insecurities.
The study, “Friendship through a narcissistic lens: The role of narcissism in perceived humor similarity among friends in Germany and the US,” was authored by Tobias Altmann and Destaney Sauls.
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