why is identity included in regression model does generosity include identity? can you include identity in a random factor why isn't generosity_a_to_b included as a random factor which factor is the random factor in a model of generosity? can i include identity as a random factor can one factor be included as a random factor why is generosity variables random why is generosity_a_to_b a random factor why is generosity_a_to_b a random variable can a random factor change reciprocity can identity be used to model reciprocal generosity does generosity depend on identity can identity and generosity be included in the model? can i use random factor to model generosity which factor of the model does b's generosity depend on? why is identity a random factor in a regression analysis? quizlet which variable in a recurrence model is used to include identity as a random factor? what is generosity_a_to_b which factor is included as a random factor in a linear regression model