The theories of human capital and internal labor markets are used to analyze teacher mobility. With data for the San Diego school system, we find that (1) since teaching assignments within school systems do not differ in terms of salary, internal mobility of teachers is governed by such...

An important source of errors in transfer payments programs is the fraudulent misreporting of earnings received by recipients. We propose a model of the recipient's decision to report income and the expected penalties if caught engaging in fraud. We discuss several features of the detection and...