In this paper we establish the asymptotic distribution of DeFries-Fulker (1985) regression estimates for heritability and shared environmental influences with double-entry twin data. A simple formula to estimate the covariance matrix of the coefficients in DF-regressions is provided, and...

Demographers have increasingly argued that social interaction is an important mechanism for understanding fertility behavior. Yet, substantial uncertainty exists whether ´social learning´ or ´social influence´ constitutes the dominant mechanism through which social networks affect...

Bongaarts and Feeney (1998) have recently proposed an adjusted total fertility rate to disentangle tempo effects from changes in the quantum of fertility. We propose an extension to the Bongaarts and Feeney formula that includes variance effects, i.e., changes in the variance of the fertility...

Substantial regularities characterize the transition to stability that follows a shift from one set of vital rates to another. The new vital, rates interact with the population's initial age composition and generate birth waves whose amplitude and attenuation depend on the ratio of ultimate to...

It is generally thought that for sake of consistency men and women must have the same average number of lifetime partners. However, this is not the case in general. When men have younger partners, women enter sexual relationships more quickly than men and have a higher number of lifetime...

Duhr S. (2005) Spatial policies for regional sustainable development: a comparison of graphic and textual representations in regional plans in England and Germany, Regional Studies 39 , 1167-1182. Cartographic representation in strategic spatial plans can be a powerful tool for the communication...

Legal processes have a theatrical component to them. They offer an audience (the spectators) and actors (the legal parties, lawyers, as well as the jury and judge) who perform a play on the stage of the courtroom. In this paper we focus on the role of the jury, which appears to be simultaneously...

This comprehensive Handbook provides a survey of all the major research areas in sports economics written by almost all of the active researchers in this field. It offers not only an accessible insight into the major findings of the literature but also presents some of the world’s principal...