Singlehood is increasing worldwide, yet science historically ignored the inner lives of unmarried individuals. A new synthesis reveals that single people are an incredibly diverse group whose well-being depends on personal motives, social networks, and relationship clarity. The research is published in Personal Relationships. It demonstrates that singlehood is a fully-fledged lifestyle.
Lead authors Katarzyna Adamczyk from Adam Mickiewicz University in Poland and Yuthika Girme from Simon Fraser University in Canada compiled these insights. They launched a special journal issue to dismantle historical assumptions that single people are a completely homogenous group with identical life outcomes.
The field is growing rapidly.
Demographic shifts show singlehood expanding across North America, Europe, Asia, and Oceania. In the United States, unmarried adults comprised 22 per cent of the population in 1950, skyrocketing to approximately 50 per cent by the 2010s.
In Europe, never-married individuals average 34.7 per cent, approaching half the population in certain nations.
Similar trends are transforming Asia, where the percentage of never-married adults aged 35 to 39 has more than doubled since 1980. These figures now range between 20 per cent and 30 per cent in Japan, South Korea, Hong Kong, and Singapore.
Societal changes like online dating heavily influence these shifts. The researchers analysed data across 12 distinct papers to map this shifting landscape.
One highlighted study examined two samples of 445 long-term and 545 younger single adults to evaluate how individual differences influence psychological health. It found that fulfilling core psychological requirements, such as autonomy and competence, consistently predicted higher satisfaction.
Valuing personal freedom also predicted higher singlehood satisfaction.
Sexual experiences also vary considerably based on personal motivations. An investigation of 1,230 single adults found that between 15.10 per cent and 26.10 per cent engaged in casual sexual relationships. Those who pursued casual sex reported lower attachment avoidance, higher sexual satisfaction, and greater perceived mate value.
Another study of 994 adults in Portugal and the United States identified three distinct single profiles based on relationship beliefs. Individuals focused purely on pleasure reported the highest well-being. Conversely, cautious single people focused on disease prevention and relationship-oriented individuals anxious about being single reported poorer sexual satisfaction.
Single profiles vary drastically.
Social networks heavily dictate daily well-being. Looking at data from two American samples of 552 and 391 individuals, researchers discovered that single people with adaptable friendship networks experienced much lower levels of loneliness.
Individuals who could make friends easily and did not experience friendship dissolution reported significantly higher life satisfaction.
Family and friend approval also predicts lower fears of being single. Data from 501 single individuals showed that social approval boosts commitment to singlehood, which is especially vital for sexually diverse individuals who rely heavily on a chosen family for support.
Cultural context alters these social dynamics. A massive cross-cultural study of 4,746 American and Japanese participants showed that family strain explained worse health outcomes for single Americans. In contrast, single Japanese adults were less impacted by these family pressures, potentially due to protective communal norms.
Qualitative research adds depth to these statistics. Interviews with seven always-single, middle-aged women in the Philippines revealed that they successfully reclaimed the traditional spinster narrative. These women focused heavily on the positive aspects of autonomy, reporting that they felt supported by family, friends, and their faith.
They felt alone but not lonely.
Anticipating the future also alters present dating behaviours. In an experiment involving 452 participants, individuals asked to envision being single for the next 10 years became significantly more willing to date partners displaying obvious lifestyle or personality flaws. Fear of prolonged singlehood explicitly lowered their relationship standards.
Conversely, knowing what one wants provides a strong psychological buffer. Young adults with high relationship clarity reported reduced loneliness across multiple time points, involving sequential samples of 191 and 184 people. Furthermore, data from 2,059 young adults revealed that relationship self-efficacy predicted longer past partnerships.
Clarity helps single people thrive.
Despite these insights, the synthesis carries notable limitations. The overview relies heavily on self-reported questionnaires, which can introduce personal bias. Additionally, several featured studies utilised geographically restricted samples, meaning the findings might not accurately reflect single experiences in underrepresented global populations or diverse socioeconomic contexts.
The authors suggest that true happiness during singlehood stems from viewing it as a legitimate relational state. For the everyday individual, this means focusing on cultivating deep friendships and personal growth rather than waiting for a partner. As the researchers note, “Singlehood is a fully-fledged form of relational life”.
Nurturing these nonromantic connections helps individuals thrive independently.
The study, “Introduction to the Special Issue: Complex and Diverse Singlehood Experiences,” was authored by Katarzyna Adamczyk and Yuthika U. Girme.
