New hikikomori research identifies three distinct profiles of extreme social withdrawal

A recent study published in Psychiatry Research suggests that the majority of people experiencing extreme social withdrawal do not fit the traditional stereotype of being driven by social anxiety. Instead, scientists found that many individuals experience severe life impairment without a heightened fear of social judgment. This provides evidence that tailored support strategies are needed for different types of social isolation.

Hikikomori is a mental health condition characterized by severe physical isolation and impaired daily functioning. “Hikikomori generally refers to prolonged social withdrawal lasting at least six months,” said Shunsuke Nonaka, an associate professor in the Faculty of Human Sciences at Musashino University. “People in this state spend most of their time at home and have difficulty participating in work, education, or social activities.”

Past assumptions often categorized this behavior strictly as a coping mechanism to escape anxiety-inducing social situations. In this traditional view, the severity of a person’s physical isolation was expected to match the intensity of their fear of negative evaluation by others.

“Hikikomori has often been understood as a problem in which people avoid contact with others because of anxiety in social situations,” Nonaka said. “However, our earlier research showed that the same behavior of staying at home may continue for different reasons. It may help someone avoid difficult social situations or ease painful feelings. Staying at home may also provide a sense of safety and enjoyment.”

Recent psychological frameworks view physical withdrawal through a more varied lens. In behavioral science, what a behavior looks like on the outside can be separated from the internal reasons that maintain it. By identifying different behavioral profiles based on the specific rewards or escapes driving the isolation, researchers aim to improve how psychological support is delivered.

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“A later study followed participants for one year,” Nonaka noted. “We found that depression and hikikomori might reinforce each other when people continued to withdraw because it helped them avoid contact with others. By contrast, finding comfort and enjoyment at home was not associated with worsening depression later.”

This earlier finding shaped the current approach. “In the present study, we therefore grouped people according to the factors that appeared to keep their withdrawal going,” Nonaka explained. “We then compared their difficulties in everyday life and their fear of being judged negatively by others.”

The researchers recruited 400 Japanese adults aged 18 to 59 through an online survey panel. The sample was split equally into two groups: 200 participants currently experiencing hikikomori and 200 control participants. The groups were matched in terms of age, which averaged 41 years old, and sex.

To be included in the hikikomori group, participants had to be unemployed or out of school, and they had to stay at home most days of the week for a period of at least six months. They also had to score above a specific severity threshold on a standard questionnaire evaluating social withdrawal. The control group consisted of employed individuals or students who frequently left their homes and scored below the severity threshold.

The authors asked participants to complete self-report questionnaires measuring both the physical form of their withdrawal behaviors and the underlying functions maintaining those behaviors. These functions included avoiding negative social interactions, seeking comfort or pleasure at home, and escaping unpleasant internal emotions. The survey also measured daily life impairment across areas like home management and close relationships, fear of negative evaluation by others, available social support, and daily stress levels.

Using statistical models to group individuals based on their behavior and motivations, the researchers identified three distinct profiles within the isolated sample. The first group, labeled the Mild profile, made up 11 percent of the sample, totaling 22 individuals. This group displayed moderate withdrawal behaviors but scored low on the psychological motivations that typically drive isolation.

People in the Mild profile experienced relatively low daily impairment compared to the rest of the isolated sample. They reported having fewer sources of social support than the control group, but they remained just as satisfied with the support they did receive. This suggests they might be physically isolated but experience less subjective distress about their situation.

The second group, called the Moderate-withdrawal profile, represented the majority of the sample at 52 percent, or 104 individuals. This group presented a paradox compared to traditional clinical expectations. They experienced severe daily life impairment at levels nearly identical to the most severely isolated group. Yet, their fear of negative evaluation by others was not statistically significant when compared to the control group.

“The most surprising finding was that the largest group, which accounted for 52% of the participants with hikikomori, did not have particularly strong social anxiety,” Nonaka told PsyPost. “Despite their serious difficulties in everyday life, their fear of being judged negatively by others was not high. This contrast is what we refer to as the ‘overlooked majority’ in the title of the paper.”

The Moderate-withdrawal group simply did not show the elevated social anxiety historically expected in hikikomori. They also reported lower levels of daily stressors compared to the severe group. The researchers noted this withdrawal might function as an adaptive strategy to avoid unpleasant feelings and maintain stability at home, rather than being driven primarily by an intense fear of people.

“The main message is that people with hikikomori should not be viewed as a single type,” Nonaka said. “The largest group, which included 52% of the participants with hikikomori, had substantial difficulties in everyday life, including work and relationships. However, they were not clearly more afraid of being judged negatively by others than people without hikikomori.”

“Strong social anxiety may not be obvious, but that does not mean the person’s difficulties are minor,” he added. “We need to understand what each person is struggling with and what may be keeping their withdrawal going.”

The third group, the Social-avoidance profile, comprised 37 percent of the sample, or 74 individuals. This group fit the classic understanding of the condition. They exhibited the highest withdrawal severity, intense fear of social judgment, the lowest levels of social support, and the highest levels of daily stress.

Members of the Social-avoidance group were also less likely to be married or possess a university degree compared to the other profiles. For these individuals, traditional therapies that target and reduce social anxiety might be highly appropriate, as their isolation tends to be heavily influenced by a fear of interpersonal evaluation.

“In another group, serious difficulties in daily life occurred alongside strong social anxiety,” Nonaka explained. “These participants also had far fewer people they could turn to for support. Although their withdrawal may look similar from the outside, they may need different kinds of support.”

Contextualizing these findings requires acknowledging the broader realities of social withdrawal. “I would like to emphasize that hikikomori is not necessarily a result of laziness or simply a preference for being alone,” Nonaka said. “For some people facing intense anxiety, painful experiences, or excessive social pressure, staying at home may be one of the few ways available to protect themselves, at least in the short term.”

“However, when withdrawal continues for a long time, it can narrow a person’s choices and connections with others and lead to new difficulties,” he added. “Simply urging someone to go outside is therefore not enough. We first need to understand what they may be protecting themselves from and then work with them to build safer and more sustainable alternatives.”

Interpreting these behavioral profiles requires an understanding of the study design. The cross-sectional nature of the survey means the data capture a single moment in time. This prevents researchers from determining if one variable causes another. The data cannot establish whether prolonged social withdrawal gradually reduces social anxiety over time, or if individuals in the Moderate-withdrawal group never had high social anxiety in the first place.

“The figure of 52% does not mean that 52% of all people with hikikomori fit this pattern,” Nonaka noted. “It is the proportion found among the Japanese survey participants selected using the relatively strict criteria of this study. The groups identified in this study are not diagnoses or fixed types that never change.”

“The fact that social anxiety was not prominent also does not mean that these people were free from distress or did not need support,” he added. “This study alone cannot tell us what causes these patterns, how they change over time, or which forms of support work best.”

All information in the study was self-reported. People experiencing severe isolation might underestimate their level of impairment or their fear of social judgment, which could influence the profile groupings. By using an online survey panel, the sample may also exclude individuals with the most extreme forms of isolation who lack internet access or the motivation to participate in research.

Future studies could include reports from family members or clinical evaluations to provide a more objective measure of a person’s functioning. Tracking individuals over months or years would also help determine if these profiles represent permanent psychological traits or temporary stages of social withdrawal.

“My long-term goal is to develop something like a map of the many different situations experienced by people with hikikomori,” Nonaka said. “By identifying the factors that influence how well support works, I hope this map can show which kinds of support are more likely to help different people.”

“There is no single path out of hikikomori,” he continued. “A more suitable path may depend on the person’s anxiety, difficulties in daily life, relationships with the people around them, and the factors keeping their withdrawal going. The purpose of this map would not be to place people into fixed categories. It would help each person and those supporting them understand their current position and consider together which paths may be easier to take.”

The study, “The overlooked majority of hikikomori: Latent profiles reveal a discrepancy between social anxiety and life functioning,” was authored by Shunsuke Nonaka, Hiroaki Kubo, Tomoya Takeda, and Motohiro Sakai.