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The sociological implications of this paradox are profound, as it can create a distorted understanding of social norms and consequently influence beliefs, attitudes, and behaviors, particularly when highly connected individuals present a skewed representation of those norms. In essence, it can lead individuals to misjudge what is typical or desirable within their social circles. This study investigates the temporal dynamics of the friendship paradox using smartphone communication data from over 600 incoming freshmen at the University of Notre Dame participating in the NetHealth project. By tracking the friendship index\u2013 the ratio of an individual\u2019s friends\u2019 average number of friends to their own number of friends\u2013 over 119 days during the Fall semester of 2015, we examine how the paradox evolves over time. Our findings reveal that the friendship index stabilizes more rapidly than both the individuals\u2019 own degree and the variation among their friends\u2019 degrees. Results from the latent growth-curve model (LGCM) confirm that while the friendship index continues to increase, its growth rate declines over time. Moreover, the LGCM identifies individual degrees, ethnic backgrounds, and personality traits as influential factors shaping the manifestation and development of the friendship paradox. By exploring the mechanisms underlying this paradox in a dynamic communication network, this study enhances our understanding of the structural factors influencing the evolution of the friendship paradox in digitally mediated interactions.<\/jats:p>","DOI":"10.1007\/s41109-025-00710-1","type":"journal-article","created":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T11:27:56Z","timestamp":1747999676000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Temporal dynamics of the friendship paradox in a smartphone communication network"],"prefix":"10.1007","volume":"10","author":[{"given":"Cheng","family":"Wang","sequence":"first","affiliation":[]},{"given":"Omar","family":"Lizardo","sequence":"additional","affiliation":[]},{"given":"David S.","family":"Hachen","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2025,5,23]]},"reference":[{"issue":"6","key":"710_CR1","doi-asserted-by":"publisher","first-page":"1531","DOI":"10.1037\/0022-3514.74.6.1531","volume":"74","author":"JB Asendorpf","year":"1998","unstructured":"Asendorpf JB, Wilpers S (1998) Personality effects on social relationships. 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