Duchenne and Becker muscular dystrophies are X-linked allelic disorders in which the association of central nervous system dysfunction, typically in the form of mental retardation, is a well recognized feature. They are both due to mutations in the dystrophin gene, whose corresponding protein products are expressed both in the muscle and central nervous system. We have observed an increased fre...

© Springer Science+Business Media New York 2015 S. Grossbard, The Marriage Motive: A Price Theory of Marriage, DOI 10.1007/978-1-4614-1623-4_2 This chapter and the following are adapted from “A Theory of Allocation of Time in Markets for Labor and Marriage,” Economic Journal, Vol. 94, pp. 863–882, December 1984. While writing it I benefited from helpful comments from Gary Becker, Jerry Green (f...