Informal institutions are defined as socially shared rules that guide individuals' behaviors outside of officially sanctioned channels. This paper investigates the link between individual educational attainment and education-related informal institutions by examining second-generation immigrants in the USA. I measure the education-related informal…

This study examined the application of the marginal maximum likelihood-EM algorithm to the parameter estimation problems of the normal ogive and logistic polytomous response models for Likert-type items. A rating scale model, based on F. Samejima's (1969) graded response model, was developed. (TJH)