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Thus, social networks are analyzed at the scale relevant to the researcher's theoretical question.Although levels of analysis are not necessarily mutually exclusive, there are three general levels into which networks may fall: micro-level, meso-level, and macro-level.Practical limitations of computing power, ethics and participant recruitment and payment also limit the scope of a social network analysis.

This article is about the theoretical concept as used in the social and behavioral sciences.For social networking sites, see Social networking service. For other uses, see Social network (disambiguation).A social network is a social structure made up of a set of social actors (such as individuals or organizations), sets of dyadic ties, and other social interactions between actors.The social network perspective provides a set of methods for analyzing the structure of whole social entities as well as a variety of theories explaining the patterns observed in these structures.Georg Simmel authored early structural theories in sociology emphasizing the dynamics of triads and "web of group affiliations".

Jacob Moreno is credited with developing the first sociograms in the 1930s to study interpersonal relationships.

Precisely because many different types of relations, singular or in combination, form these network configurations, network analytics are useful to a broad range of research enterprises.

In social science, these fields of study include, but are not limited to anthropology, biology, communication studies, economics, geography, information science, organizational studies, social psychology, sociology, and sociolinguistics.

Also independently active in the Harvard Social Relations department at the time were Charles Tilly, who focused on networks in political and community sociology and social movements, and Stanley Milgram, who developed the "six degrees of separation" thesis.

of, for example, all interpersonal relationships in the world is not feasible and is likely to contain so much information as to be uninformative.

At the micro-level, social network research typically begins with an individual, snowballing as social relationships are traced, or may begin with a small group of individuals in a particular social context.