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The Science of Finding a Friend: A Biological, Psychological, and Social Guide to Human Connection
Paperback
Health GeneralGeneral Psychology
Publisher Price: $14.99
Publisher: T-Mac Ink
Published: Sep 5 2026
Pages: 256
Weight: 0.76
Height: 0.54 Width: 6.00 Depth: 9.00
Language: English
Why do some friendships last for decades while others never get beyond acquaintance? Why does loneliness hurt so much-and why can the presence of a trusted friend measurably change how the brain and body respond to stress?
The Science of Finding a Friend explores friendship as a biological, psychological, and social phenomenon. Drawing on peer-reviewed research from neuroscience, psychology, sociology, evolutionary biology, public health, and medicine, this book examines why human beings are biologically built for connection and what happens when that need goes unmet.
From Dunbar's Number and the social brain to oxytocin, vasopressin, dopamine, endogenous opioids, C-tactile nerve fibers, physiological synchrony, and Social Baseline Theory, the book explains the mechanisms that make human connection rewarding, regulating, and essential. It also examines the consequences of chronic loneliness and social isolation, including their documented relationships with cardiovascular disease, stroke, inflammation, immune function, sleep disruption, depression, cognitive decline, and dementia.
The book then turns from the science of disconnection to the practical science of making friends. Research on proximity, repeated exposure, similarity, self-disclosure, vulnerability, reciprocity, synchronized activity, and the time required to develop meaningful relationships shows that friendship formation is not nearly as mysterious as it seems.
Across nineteen chapters, The Science of Finding a Friend examines friendship across the lifespan, relationship dissolution, digital versus in-person connection, and cultural differences in how friendship is experienced and valued. The final chapters translate the research into practical, evidence-based strategies for adults who want to build stronger social networks and meaningful relationships.
Written for the educated general reader, this is not a memoir or a conventional self-help checklist. It is a science-based exploration of one of the most fundamental features of human life: our need to connect with other people.
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