2010-02-04 (6)

2010-02-04 (6) - Today’s Overview Review A Guiding...

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Unformatted text preview: Today’s Overview Review A Guiding Example Gathering Network Data Basic Design Strategies Some Practical Difficulties 2 Classroom Networks Review – Ego’s Alters (Feld 1991, Zheng et al 2006, Heckathorn & Jeffi 2001) Feld:  On average – people’s friends have more friends than they do (in a fully enumerated population) Zheng:  On average – people know 1 person in prison  But, that average is a product of: Most people know ZERO people in prison While most who know any, know many Heckathorn & Jeffi:  We can use knowledge of networks to study hard to reach populations (e.g., jazz musicians) through multiple referral chains Sampling Process Target Population Sampling Frame Study Population Selection Criteria Sampling List Study Sample Generalization Response Rate Target Sample (Adapted from Pam Oliver’s Soc 357 Notes, Univ. of Wisconsin) Non-probability sampling generalize to target sample Probability sampling generalize to study population Today’s Overview Review A Guiding Example Gathering Network Data Basic Design Strategies Some Practical Difficulties 2 Classroom Networks Research Design Suppose our general research question was:  “What rules govern the dynamics of conversations among members of a class?” How can we gather data on the nodes & ties in that network?  (Node-based vs. Edge-based) Today’s Overview Review A Guiding Example Gathering Network Data Basic Design Strategies Some Practical Difficulties 2 Classroom Networks Social Network Data Collection Local/Ego Network Data  Data – Respondent (ego) &the people they are connected to (alters) May also include estimates of connections among alters  Key aims - number & characteristics of ego’s alters Partial Network Data  Data – Ego networks plus some amount of tracing to reach contacts of contacts Produces representation of less than full account of the connections among all pairs of actors in the relevant population (and potentially missing some nodes)  Key aims - Contact Tracing (Snowball sampling / link-tracing),...
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2010-02-04 (6) - Today’s Overview Review A Guiding...

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