These surprising findings were recently published in a study led by Makoto Chikaraishi, Professor of Hiroshima University’s Graduate School of Advanced Science and Engineering. It looks at the ways that our everyday lives influence the development of social networks. The study, published in the journal Transportation on August 27, goes deep on the relationship dynamics. It focuses on how people connect with one another through a multitude of social activities.
The study involved 16 participants who collectively made 1,344 decisions regarding their engagement in different activities over a span of 21 days. The participants took part in 435 joint activities categorized into four primary types: attending events, dining out, going to parties, and other leisure pursuits. This inventive method draws attention to the ways mundane encounters help create social networks of support.
Understanding Social Networks Through Daily Activities
Chikaraishi’s research gave rise to a new framework that took into consideration the ever-changing nature of social networks. The new research underscores the importance of routine activities in forming bonds. At some point these connections stop going deeper to become meaningful friendships.
In order to evaluate their approach, the research team built a baseline simulation with 200 international students from ten countries. This simulation made it possible to study how individual social interactions might change under different scenarios. Through the three week experience, these participants recorded an impressive 86 person-encounter events. The findings revealed a stark reality: only 13 unique friendships emerged and persisted among the individuals involved.
“We set out to capture social networks as adaptive networks that evolve with [daily activities]. We found that activities scatter countless ‘seeds,’ but few grow into lasting ties—and policies shape the soil in which they take root.” – Makoto Chikaraishi
Implications of Activity Restrictions on Network Growth
The study looked more closely at the role of constraints on social activity in shaping network growth. It revealed that prohibiting these practices would cut network growth in almost half by nearly one-third. This finding is especially timely considering recent global events that have curtailed opportunities for out-of-home social interactions.
According to Chikaraishi, recognizing social networks as adaptive systems provides new opportunities for assessing urban and transport policies based on their social consequences. Beyond the ivory tower, the impact of this research continues to inform local and state policy makers and urban planners.
“Recognizing social networks as adaptive systems opens new ways to evaluate urban and transport policies through their social consequences,” – Makoto Chikaraishi
The Future of Social Connectivity
As Chikaraishi’s work shows, social connections can be incredibly complicated, even in a world that should be more interconnected than ever. Simple daily routines and activities can lead to deeper connections and friendships. As research indicates, when it comes to lasting connections, interaction isn’t enough. They flourish under dedicated leadership and intentional policy.
These results underscore the importance of accounting for various covariates. The physical and mental boundaries caused by urban design and transport availability can either promote or restrict social interaction between individuals. It is time for policymakers and urban planners to reconsider the battle approaches. They all need to promote social interactions that help foster more vibrant, healthier connections between residents.

