The effects of teenage fertility on young adult childbearing

Numerous studies of fertility behavior find that an early age at first birth increases the rate of subsequent childbearing. Typically, however, these studies do not account for the possibility of serial correlation in the unobserved determinants of fertility. Using 1979–1992 individual-level data from the National Longitudinal Survey of Youth, this paper employs the Method of Simulated Moments to estimate panel probit models of annual birth outcomes. The panel probit models account for several alternative sources of serial correlation. Estimation reveals that once serial correlation is taken into account, the subsequent fertility effects of early childbearing are either statistically eliminated or reversed. JEL classification: J13 Received March 3, 1995 / Accepted February 23, 1996     

First-generation effects on second-generation fertility

The number of children born to the second generation is shown to be inversely related to the predicted income of the first generation (father's father) and to the number of siblings in the second generation. This is true even when second-generation characteristics are taken account of. This long-term effect may be the result of parental influences on the tastes, opportunities or genes of their children. They do get an empirical expression because of the imperfect and partial measurement of second-generation characteristics.     

The effects of gender control on fertility and children's consumption

Effects of sex preference on investments in children‘s human capital, bequests and fertility are studied, with and without sex selection, in a model based on parental altruism. Both pure sex preference, a feature of the parental utility function, and indirect preference, which arises from gender-related differences in earnings opportunities, are examined. When there is no gender control the impact of pure sex preference is seen in smaller consumption for daughters than for sons. However, when gender control is exerted, sex preference raises the sex ratio and it is possible that sisters may, on average, consume no less than their more numerous brothers. In an example of the model with specific functional forms, parents who practise gender control have larger families than if sex selection techniques were unavailable. The effect is magnified if sons‘ earnings opportunities are better than daughters‘. JEL classification: D11, J13, J16 Received August 31, 1995 / Accepted May 2, 1996     

The differential effects of husbands' and wives' statuses on marital fertility

As an extension of prior subjectively-oriented studies that predicted couples' fertility decisions or outcomes by the expected costs and benefits of childbearing to husbands and wives, this article examines the differentiated effects of husbands' and wives' objective statuses on marital fertility, using the cumulative 1972–1990 GSS data. An interesting finding is that wives' education has a significant, negative effect on fertility while the effect of husbands' education is positive and statistically insignificant. This suggests that the generalization of the negative effect of education on fertility may be misleading if one fails to make a distinction between marital partners. Meanwhile, this study finds no significant differences in the effects of husbands' and wives' occupational and work statuses on fertility. By and large, the husbands' status variables add little information to the models explaining fertility. It is also found that the effects of husbands' and wives' statuses are contingent upon their relative education.     

Some effects of spouse separation on fertility

Simple probability models incorporating an approximation first demonstrated by Menken (1979) are used to study births averted by two classes of temporary spouse separation, single and cyclic, under conditions of natural fertility. For either class of spouse separation, births averted increases disproportionately with longer separation. For a given length of separation, births prevented are more sensitive to change in length of anovulation than to change in level ofnatural fecundability or risk of spontaneous abortion. In addition, by means of the macrosimulation model REPMOD (Bongaarts, 1977), it is shown that the fertility impact of temporary spouse separation tends to decrease as couples age.     

The effects of family caps on the subsequent fertility decisions of never-married mothers

Family caps seek to reduce fertility among welfare recipients by denying additional cash assistance to recipients who have children while on welfare. A necessary condition for family caps to be an effective policy tool is that welfare recipients respond to financial incentives in making decisions that affect subsequent fertility outcomes. This paper uses data from the 2001 and 2004 panels of the Survey of Income and Program Participation (SIPP) to examine whether welfare mothers respond to the incentive provided by the Aid to Families with Dependent Children/Temporary Assistance to Needy Families (AFDC/TANF) system in determining whether or not to have a second child. The results show no evidence that family caps have an effect on the subsequent childbearing of never married women.

The effects of infant mortality on fertility revisited: new evidence from latin america

In this paper, we examine empirical evidence for a relation between infant and child mortality and fertility in Latin American countries from 1920 to 1990. We investigate the relation at several levels of aggregation and evaluate the extent to which evidence at one level is consistent with evidence at other levels. We first examine aggregate cross-country information over several decades, a type of data typically used in past research on the topic. We also examine yearly series of births, deaths, infant deaths, and socioeconomic indicators for selected countries to track the association between short-term fluctuations in fertility and infant mortality. Finally, we use micro-level data from the Demographic and Health Surveys (DHS) to assess the relation between fertility and child mortality from individual reproductive histories. The evidence we assemble from these different data sets is remarkably consistent and suggests small positive effects of infant mortality on fertility. These effects, however, may be too small to support the hypothesis that changes in child mortality are of more than modest importance in the process of fertility decline in Latin America in the late twentieth century.     

Intergenerational effects on fertility Theory and evidence from Israel

On the assumption that genetic inheritage and experience during adolescence influence the taste for children, the characteristics of a couple's parents may be used to improve on the explanation of fertility which can be obtained from variables that only refer to the couple itself. We find that in Israel fertility depends positively on the mother's siblings and negatively on the grandfathers' wage, but apparently does not depend on the father's siblings. Since fertility also depends positively on the mother's predicted wage, the number of children is positively related to improvements in the economic achievements from one generation to the next.We wish to thank the referees and the managing editor for helpful suggestions.     

Demographic transitions: analyzing the effects of mortality on fertility

The effect of mortality reductions on fertility is one of the main mechanisms stressed by the recent growth literature in order to explain demographic transitions. We analyze the empirical relevance of this mechanism based on the experience of developed and developing countries since 1960. We distinguish between the effects on gross and net fertility, take into account the dynamic nature of the relationship, and control for alternative explanatory factors and for endogeneity. Our results show that mortality plays a large role in fertility reductions, that the change in fertility behavior comes with a lag of about 10 years and that both net and gross fertility are affected. We find comparatively little support for explanations of the demographic transition based on changes in GDP per capita.     

The effect of income on fertility

Abstract Cross-sectional data and long-period time series data have generally shown an inverse relationship between income and fertility. But short-period time series data over the business cycle have shown a direct relationship. The first part of this paper resolves this apparent paradox by showing that it arises from a statistical illusion-specification bias due to omitted lagged variables. The second part of the paper then considers the likely unconditional effect of income on fertility in several sorts of situations: (a) secular income increase in less developed countries; (b) cyclical income change in industrialized countries; (c) secular income increase in industrialized countries; and (d) incentive payments for higher and lower fertility.     

The effects of formal church affiliation and religiosity on the fertility patterns of Mexican-American catholics

The effects of religion on the fertility patterns of Mexican Americans are examined with two different path models, the Institutional Model using formal affiliation with the Roman Catholic Church as a measure of religion, and the Religiosity Model using a measure of religiosity. Each model, tested separately for husbands and wives, examines the effects of religion on types of contraceptive methods used and on wanted family size. Although the majority of Mexican Americans are Catholics and tend to have large families, religion does not seem to have the same effect on their fertility patterns as on that of other Catholics in the United States. Among the men, neither formal affiliation nor religiosity affect the fertility patterns in any way, while among the women the effect is slight. Considering the Catholic Church’s position on contraceptive usage, it is especially noteworthy that religion does not affect the use or non-use of the more effective means of contraception, a factor contributing to the generally weak association between the measures of religion and wanted family size. The last section attempts a partial explanation of why the results turned out as they did.     

The conflicting effects of delayed marriage and declining divorce rates on cumulative fertility in Indonesia

The impact of nuptiality patterns on fertility in Indonesia is examined with multivariate analysis controlling for 8 socioeconomic variables. Data were obtained from the 1987 Indonesian Contraceptive Prevalence Survey. Marriage is usually universal by age 35, and in this study all women 30 years had been married at least once. 20% were married at 15 years and 45% married at 18 years. For those married more than once, prevalence of 1st marriage was 7% for women 15-24 years, 15% for 25-34 years, and 29% for 35-49 years. In 1976 and 1987, the age at 1st marriage and number of times married were both strongly and negatively correlated. The % never marrying between 15-49 years rose from 21.5% to 26.4% between 1980-87. Cumulative fertility w as related to both age at 1st marriage and number of times married. Muslim women, women in Java and Bali, and rural women all marry at younger ages. 27% of the variance in age at 1st marriage is explained by women aged 25-34, current residence, region, religion, language, education, and work or not before marriage. The number of times married is also associated with socioeconomic characteristics without control, i.e., Muslim women 25-34 years were 3 times more likely to have been married more than once than in other faiths. With controls for socioeconomic factors, only 13% of the variance is explained and being Muslim has no statistically significant effect. The important net effects were being interviewed in Balinese, age, and age at 1st marriage. In the analysis of cumulative fertility, age at 1st marriage consistently is related to cumulative fertility in almost every socioeconomic group when age and number of times married is controlled for. Women married more than once have lower fertility. 36% of the variance is explained by all the variables. Being married more than once leads to having 2.1 fewer children. A 5-year delay in marriage leads to .75-1.1 fewer children. When other variables are controlled for, neither educational level nor prior work experience has a statistically significant effect on cumulative fertility. In the contraception analysis, women married more than once used contraception less. Among women 35-49, those marrying later had higher contraceptive use, but in general contraceptive use declined with age. More information is needed on why marriage patterns are changing.     

The effects of financial markets and social security on saving and fertility behaviour in Italy

The paper aims to ascertain the extent to which saving and fertility decisions are affected by the availability and attractiveness of market-based or state-provided alternatives to the family as a source of old-age support. Subordinately, the paper aims to bring evidence to bear on the assumption that fertility is endogenous and jointly determined with saving, and to test two alternative hypotheses about individual motivations. The saving and fertility implications of two alternative models of family choice — based one on the assumption of pure self-interest, the other on that of intergenerational altruism — are first derived theoretically. Saving and fertility equations are then estimated from Italian time-series data, using as explanatory variables the market rate of interest, the social security deficit, various measures of capital market accessibility and social security coverage, and a number of income and wage variables. Particularly worthy of note is the result that a fully-funded increase in social security coverage raises saving, while an increase in the social security deficit has the opposite effect. The empirical findings appear to support the assumption that fertility is endogenous and jointly determined with saving, and to favour the hypothesis that individual decisions are motivated by self-interest rather than intergenerational altruism. Some of the policy implications are briefly discussed in the concluding section.While retaining responsibility for any errors, the authors wish to thank Carlo Casarosa, Wolfram Richter, Ed Wolff and three anonymous referees for helpful comments. Financial support from MURST 40%, under national project Capitale, Capitale Umano, Sicurezza Sociale e Dinamiche Demografische Endogene, is gratefully acknowledged.     

The influence of human fertility on the economic conditions of the rural population in poland

Summary In 1970, Polish women in agricultural households reported larger numbers of children born alive than women in other occupations. When controlling for the influence of age at marriage and duration of marriage, the average number of children born per women among the farming population increased directly with the amount of privately owned agricultural land. Consistently, women whose principal source of livelihood was derived from non-agricultural sources even though they resided in villages, showed lower fertility than those in the agricultural sector, but significantly higher fertility than city women. This study is based on the five per cent sample of ever-married women between 15 and 70 years of age interviewed about their past reproductive histories in Poland during the 1970 Census of Population.The conclusions identify the high level of human fertility in rural populations as the main determinant of economic status among Polish peasants whose sources of support derive primarily from farming. Additional evidence supporting the hypothesis of dependence of the agricultural economy on the force of human reproduction is based on data for Slovakia and the Czech regions.     

Skill premium effects on fertility and female labor force supply

In the last twenty years the United States has seen a positive relationship between female labor supply and total fertility rates, which differs from the pattern observed over the preceding years. We construct a general equilibrium overlapping generations model capable of generating this changing relationship between fertility and female labor supply. We argue that skilled biased technological change in recent decades has increased the skill premium and has therefore decreased the relative cost of (unskilled) child care services. The positive effect of the increase in female mean wages on fertility rates, and the inducement for labor force participation provided by the reduction in the relative cost of child care services, generated the positive relationship between fertility rates and female labor force participation in the last two decades.All correspondence to Amaia Iza. This paper has benefited particularly from comments by Juan Carlos Conesa, Pedro Mira and Sara de la Rica. We also acknowledge countless conversations with María Paz Espinosa and useful comments from Jaime Alonso, Jose María Da-Rocha, Tim Kehoe, José Victor Rios-Rull, when the paper was presented at the IV Workshop of Dynamic Macroeconomics held in Vigo (Spain, July 1999) and in Universidade de Vigo (October, 2000). We also thank an anonymous referee whose comments enabled us to improve the paper considerably. Financial support from Universidad del País Vasco 9UPV 00035.321-13511/2001, Ministerio de Educación y Ciencia PB097-0620, MCYT BEC2000/1394 and Instituto de la mujer (Ministerio de Trabajo y Asuntos Sociales) MTAS 33/00 is gratefully acknowledged. Any remaining errors are the authors responsibility. Responsible editor: Junsen Zhang.     

Timing effects and the interpretation of period fertility

Low fertility levels and later childbearing in many developed countries have reinvigorated the debate between period and cohort perspectives on fertility and on the meaningfulness of the period total fertility rate (TFR). Here, fertility-timing effects are defined as level changes in period fertility that do not reflect level changes in the completed fertility of cohorts. That definition leads to the average cohort fertility (ACF) as a measure of period fertility adjusted for timing effects. In an influential paper, Bongaarts and Feeney (1998) presented an alternative approach and a different measure, TFR*, to adjust for timing effects. Here, the two measures are compared. In the context of model populations, the ACF performs well, reflecting an average of the fertility of the active cohorts. The Bongaarts-Feeney TFR*, however, is frequently unreliable and can be erratic when there are cycles in period timing. When applied to twentieth-century U.S. experience, the TFR* behaves like a period measure and yields adjustments that are often wide of the mark. The ACF shows the stability associated with cohort measures and quantifies the substantial impact that timing effects had during the "birth dearth" of the 1970s. The period TFR reached a low of 1.74 in 1976, but the ACF never went below 2.06 during the 1970s.     

The influence of first generation fertility and economic status on second generation fertility

This paper examines the impact of parental economic status and family size on the actual and expected fertility of adult children using longitudinal data from two generations of families participating in the Panel Study of Income Dynamics. There was a modest positive relationship between first generation family size and second generation fertility. More importantly, the ideal family size of the parental family was more closely related to fertility behavior and plans in the second generation than was actual parental family size. In addition, the data revealed the hypothesized negative correlation between parental financial status and second generation fertility behavior and plans. Several mechanisms which could produce the correlation between parental characteristics and the fertility of their children are explored.The analysis reported in this paper was supported by Contract NO1-HD-42856 from the National Institute for Child Health and Human Development, Center for Population Research. Dr. Thornton is affiliated with the Survey Research Center, Institute for Social Research, University of Michigan, Ann Arbor, MI 48106. Requests for reprints should be directed to him.     

The effect of normative pressures on fertility

Using longitudinal data from a sample of urban, white, married U.S. couples, this paper shows the effects of normative pressures from family and friends on whether or not the couple had a pregnancy within one year. A comparison of parity-specific and all-parity models indicates that more information and better predictions can be obtained from parity-specific models. Normative pressures predict pregnancy best at zero parity, with progressively attenuated predictions at higher parity. A comparison of models using husband and wife data together shows that two-sex models are better than models using either sex alone. In a variety of different models, normative pressures reported by husbands are better predictors of pregnancy than are normative pressures reported by wives. A comparison of models using aggregated measures of normative pressures with models identifying the separate individual sources of pressures indicates that each treatment provides different insights into the effects of normative pressures, but that predictive power is lost through aggregation.This study was supported by a grant from the Center for Population Research, NICHD (Grant No. N01-HD-42804). Boone Turchi and Karl Bauman were collaborators on the original study. The authors would like to thank Judy Kovenock for data analysis. Requests for reprints should be directed to J. Richard Udry, Carolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514.     

The nature and effects of Latin America’s non-western trend in fertility

A study by historical comparison of the fertility trends related to mortality levels is made between Latin America and Europe. The purpose of such study is to show why Latin America did not repeat the European mortality-fertility pattern during 1930–1960. Differences between the two areas are established, and an explanation is given about the particular Latin America mortality-fertility model. The effects of such a Latin America trend are pointed out, principally in relation to population growth, city growth and labor force. Hypothetical Latin American populations are calculated under the assumption that the area has repeated the European pattern. A comparison between these hypothetical populations with the actual ones shows how different the situation of the area has actually been. Nevertheless, an analysis of the necessary fertility changes in order to reproduce the European model shows that it was impossible for Latin America to repeat the European mortality-fertility experience during 1930–1960.     

Assessing the effects of intermediate variables on birth interval-specific measures of fertility

This paper proposes a technique to simultaneously assess the effect of selected intermediate variables on the dynamics of birth intervals and to aggregate such effects across births of different order. The essentials, virtues and limitations of other approaches are 1st summarized. A method to link measures of birth interval dynamics to aggregated measures of fertility such as the age-specific fertility rates and total fertility is explained. A set of operations is suggested, required to translate estimates of birth interval-specific effects of intermediate variables into aggregate effects (e.g., effects at the level of fertility rates). These operations effectively permit the synthesis of results from multivariate procedures and those of techniques aimed at decomposing the effects of intermediate variables. Discussed are estimation and measurement procedures to deal with deal available from retrospective interviews carried out as part of the World Fertility Survey (WFS) program. The effects of marriage pattern are not considered. The effects of lactation are measured by using a dichotomous variable with a value of 1 if the preceding child was breast fed for at least as long as 9 months less than the beginning of the segment of interest and 0 otherwise. Following the assignment of a measure of effectiveness, 3 groups are distinguished in measuring contraceptive use: non-contraceptors, those using an ineffective method, and effective contraceptors. With respect to measuring the effects of induced abortion and spontaneous fetal losses, a variable is created indicating whether or not a birth leading to a fetal loss or the fetal loss itself had occurred within the segment being examined. 2 indicators, 1 a binary variable and the other aimed at measuring gradations of sterility are introduced to measure exposure to intercourse and sterility. Logit regression coefficients for selected intermediate variables are presented for Peru. The tables reveal the power of the variables measuring contraception. The evidence offers strong indications to support the contention that some form of birth control makes a difference as it does to confirm a priori expectations about success of different types of users. The inhibiting effects of breast feeding are generally in the direction expected but they are not always statistically significant. They appear to be stronger at higher parities and more intense in the earlier parts of the birth intervals. The effects of the variable representing continuity of marital union are surprisingly strong and significant for all segments of 10 months of width and for all births of order higher than 1.