(the chosen). These effects have been widely studied and are typically strong predictors of friendship formation. Fortunately, moreover, whereas specific selection effect parameters may be biased by a failure to include more fundamental effects, omission of some context effects for the sake of parsimony appears not to affect behavior-based selection and exposure effects greatly, as long as a reasonable set of known determinants of network dynamics are included (Steglich, Sinclair, Holliday, & Moore, 2012).
