Season of birth is associated with later outcomes; what drives this association remains unclear. We consider a new explanation: variation in maternal characteristics. We document large changes in maternal characteristics for births throughout the year; winter births are disproportionally...

Research has found that season of birth is associated with later health and professional outcomes; what drives this association remains unclear. In this paper we consider a new explanation: that children born at different times in the year are conceived by women with different socioeconomic...

Since 1992, Romania's population declined every year naturally, the number of deaths being higher than live births. If in Bacau until 2002 we had to deal with natural growth of the population, even if increasingly less, starting that year it emerged more and more the process of decline of the...

It is known that the number of marriages concluded in general in a geographic area follows a cyclical trend due primarily to religious factors. In this study we wanted to test whether this assumption is maintained in the past four years. On the other hand, we wanted to look at the indices of...

The last census of 20 October 2011, confirmed the decrease in the stable population in most localities, although this did not occur uniformly across the county. The analysis aims to highlight the stable population evolution in the last two censuses, which mainly led to decreases in existent...

Livestock population and its structure is the starting point for all development strategies at both micro and macro level, reason for which accurate knowledge of it is one of the main objectives of official statistics in each state. The analysis aims to highlight the major changes produced after...

El proceso de reducción de la fecundidad es un fenómeno moderno de la sociedad. Como explicación existen diferentes concepciones que parten de la teoría de la transición demográfica y se fundamentan tradicionalmente en una visión económica, aun cuando existen aportes de otras ciencias...

This research tests a bargaining model of household fertility decision-making. Using unstructured interviews conducted in Brazil in 1990 and 1992-93, and an econometric analysis of the 1984 PNAD .5 percent sample of Brazilian households, we examine the impact of husband-wife bargaining fertility.

In some cases when statistical methods of examination of relations and dependences are applied to distributions which are different than normal the results are questioned. One of the reasons is that in the construction of these methods grounded are just a first initial, second central and a...

In some of the cases when statistical methods of research on inter-relationships and interdependencies are applied to distributions different from the normal, the results can be disputed. One of the reasons is that the construction of these methods is based only on the first moment, the second...