In fertility surveys often women (and sometimes men) are asked their fertility desires, i.e. whether they want a/nother birth or not. Some respond that they are undecided. This study examines whether these persons are more like those who say they want more births or like those who say they want no more births. Data on married men and women in 29 Demographic and Health Surveys with sample sizes ...

This article describes recent trends in annual fertility rates, and generation measurements of average family size and family size distributions for eight selected European Countries. It compares the changing ages at which mothers are having children and the decline in higher order births, both over time and between countries: The way that variations and changes in annual rates influence genera...

Periodically, fears are voiced that the intelligence level of the u.s. population is falling. Historically, this fear has been joined to the belief that fertility is inversely related to intelligence. Evidence for that belief is sparse, and may be an artifact of the failure of researchers to consider completed families. An inverse correlation between measures of intelligence .and number of chil...

Marital Fertility and Religion: Recent Changes in Spain Since the onset of democracy in 1975, both total fertility and Mass attendance rates in Spain have dropped dramatically. I use the 1985 and 1999 Spanish Fertility Surveys to study whether the significance of religion in fertility behavior – both in family size and in the spacing of births – has changed. While in the 1985 SFS family size wa...

The parameters investigated in this study with the objective of evaluating growth, lactation and reproductive performances, included birth weight, litter size, 0-90 days gain and average daily gain of kids as well as the milk yield and progesterone profile of Red Sokoto does supplemented with crop-residue based rations during the long-dry period of the subhumid zone in Nigeria. A total of 7 tre...

It is commonly agreed that birth weight is associated with blood pressure in adults. However, not much is known about birth length, ponderal index, and early postnatal growth, whose effects on adult blood pressure, if any, can affect the interpretation of the birth weight-blood pressure association. This study examined the association between fetal growth, early postnatal growth, and blood pres...

There is an extensive theoretical literature that postulates a trade off between child quantity and quality within a family. However, there is little causal evidence that speaks to this theory. Using a rich dataset on the entire population of Norway over an extended period of time, we examine the effects of family size and birth order on the educational attainment of children. While we find a n...

Ca status in the uterus during pregnancy has been suggested to affect fetal growth and size at birth. In Bangladesh, low Ca levels in pregnant women and low birth weight in infants are common. The present study explored the association between Ca levels in cord blood and newborn size at birth (birth weight and birth length) in Bangladesh. Samples and data included 223 women with live-born singl...

This paper provides a new characterization of stages of the demographic transition, describing it from a child’s perspective. These stages describe the sequence of changes in family and cohort sizes that affect children’s resources. In Stage 1, falling mortality produces increases in surviving family size and in the size of birth cohorts. In Stage 2, falling fertility overtakes falling mortalit...

This study is based on 12708 first-parity and 7062 second-parity Yorkshire litters from Swedish nucleus herds; and on 1037 first-parity Yorkshire litters from an experimental herd. Gestation length was analysed together with litter size, piglet mortality and average piglet growth rate. A sire–dam model was used to estimate direct (litter) and maternal (sow) genetic effects. Direct heritability ...