QTM 385 Lecture Notes - Lecture 8: Equation, Dependent And Independent Variables, Context-Dependent Memory
16 Jan 2019
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Document Summary
Instrumental variables estimates of peer effects in social networks. social. Peer influence (endogenous peer effects) --- an individuals outcome is affected by peer"s outcomes. Exogenous peer effects: an individual"s outcome is affected by peer"s exogenous characteristics. Contextual effects: peers" outcomes are simultaneously affected by their shared social and environmental factors. Selection of peers based on factors related to outcome: difficulties. Simultaneity: an individual may affect peers in the same time being affected by them: estimates by ols are inconsistent, measurement error: In the outcome can reduce precision of estimates while. In explanatory variable will bias estimated coefficient toward zero: dag = directed acyclical graphs, past models. Stochastic actor-oriented model -- strong parametric assumptions on how behavior and networks evolve over time. Experiments -- random assignment of social contacts/ partial assignment of random intervention: data and methods, data. 4000 students in 6 middle schools in china (2010-2011) 3 from rural and 3 from suburban areas: dependent variable.
