Ego networks consist of a focal node ("ego") and the nodes khổng lồ whom ego isdirectly connected to (these are called "alters") plus the ties, if any, amongthe alters.


Of course, each alter in an ego network has his/her own ego network, & all egonetworks interloông xã khổng lồ khung The human social network.

Social Relations

Egos & alters are tied to each other by social relations. There are various kinds ofsocial relations, including:


Data Collection for Ego networks

Two basic strategies: person-based và relation-based. The person-based strategy uses amix of open-ended questionnaire items known as a name generator. Typically, it isunlimited in scope: the respondent may name anyone from any sphere of life: neighbors,kin, friends, coworkers, etc. After obtaining a large list of names, the interviewertypically goes over each name, asking the respondent about the nature of theirrelationship with that person (what social relation) & asking about attributes of thatperson (sex, race, income, etc.). When possible, this is then followed by asking therespondent lớn indicate relationships aao ước the alters.

The relation-based strategy starts with a relation of interest, such as emotionaltư vấn, & then asks all the people that the respondent has this particular relationshipwith. Sometimes this is within the context of a circumscribed group, such as "whichof your fellow employees lớn obtain emotion support from?". If appropriate this isthen followed by attributes of the tie, such as duration, intensity, frequency, strength,& so on. If the relation is friendship, might ask strength và duration, but notfrequency. If the relation is interacts with, might ask frequency & tenure of therelationship. Attributes of the alters can also be asked.

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It should be obvious that random sampling of egos from a large pop will not form anetwork: it is likely that no ego mentions an alter that is another ego or is an alter ofanother ego. Hence, certain network measures cannot be obtained from ego network data,such as the number of link that separate people.

Functions Served by Ego Networks

Social support. Emotional & material aid. Companionship. Information.

Sense-making. How lớn interpret the world.

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Social control. Ensuring that egos behave sầu according to lớn norms.

Access khổng lồ resources. Entrepreneurs draw on their contacts to get the clients andemployees và consultants they need.

Behavioral models. You tover to lớn talk lượt thích the people you talk to. You become aware ofchoices -- from clothing options lớn brands of cars to lớn ways of talking và behaving -- fromthe people in your ego network.

Characteristics of Ego Networks

A standing hypothesis about ego networks is that svào ties are homophilous. That is,people have sầu the strongest ties with people who similar to themselves on key attributes,such as social class, age, sex, race, political views, etc.

Another standing hypothesis or guiding principle is that people with heterogeneousnetworks are "better off". The greater the diversity of their network, the morechance that someone in the network has something ego needs. This is particularly relevantfor entrepreneurs.

According lớn Granovetter, the stronger the tie between EGO and two of her alters, thegreater the likelihood that the alters enjoy at least a weak tie. Granovetter alsobelieves that weak ties provide people with access khổng lồ novel information, whereas yoursvào ties tover khổng lồ know the same things you bởi vì. Hence, the denser the ties in an egonetwork, the stronger the ties, and the more insular the ego network & also the morehomogeneous.

Typical measures: homophily kích thước average strength of ties heterogeneity mật độ trùng lặp từ khóa composition (e.g., % women, %whites, etc.) range: i. substantively defined as potential access to social resources ii. often defined as diversity of alters iii. based on weak ties argument, density is thought of as inverse measure of range iv. kích cỡ & heterogeneity also seen as measures of range

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