- Open Access
The impact of children on divorce risk
© Xu et al.; licensee Springer. 2015
Received: 16 December 2014
Accepted: 3 March 2015
Published: 17 April 2015
Based on the data of the first wave of the Chinese Family Panel Study in 2010, this paper studies the relationship of divorce risk and four variables related to children in China: premarital births and number, age, and gender of children. We find that all four variables have significant effects on divorce risk. Specifically, (1) couples who have premarital children are more likely to divorce; (2) the higher the number of children, the more stable the marriage, but the marginal effect declines with the increase of the number of children; (3) younger children reduce the risk of divorce more than older ones; and (4) couples who have sons are less likely to divorce. All these findings are consistent with studies conducted in other countries and suggest that children play an important role in stabilizing marriage and resolving conflicts in marriage. We also find that the positive effect of children on marital stability and the effect of children’s gender are stronger in rural areas, which is due to the differences in modernization and cultural values between rural and urban areas. These findings imply that changes in marriage values and the decline of the fertility rate are two important causes of the recent increase of the divorce rate in China.
As a “media of binding couples biologically and psychologically” (Fei 1999), the presence of children is generally considered to be an important guarantee of stability in a marital relationship (Waite and Lillard 1991; Heaton 1990; Thornton 1977). Children are not only the most important investment in a marriage (Becker 1973; Becker et al. 1977) but can also enhance the emotion and interdependence between husband and wife (Durkheim 2000; Waite and Lillard 1991). Therefore, couples with children have a lower divorce risk.
However, empirical studies have found that the relationship between children and marital stability is very complex. First, having children is not always a beneficial factor for the stability of a marriage (Waite and Lillard 1991). Second, in the dynamic process of children growing up, children’s effect on the stability of marriage changes (Heaton 1990). Finally, the impact of children differs by gender. Studies have found that having sons is more protective of the stability of marriage (Morgan et al. 1988).
Compared with rich theoretical and empirical research, there has not yet been a systematic study that investigates the relationship between children and divorce risk in the unique context of China. Based on the first wave of the Chinese Family Panel Study (CFPS) in 2010, this study explores this issue for the first time. In China, the subsequent impact of the one-child policy on family life is gradually emerging. Therefore, exploring the factors influencing family stability from the perspective of children is not only of theoretical significance but also of important practical significance.
Thus, there is a rapid decline of the total fertility rate on the one hand and a substantial increase in the crude divorce rate on the other. Although this study does not focus exclusively on the association between the two, the simultaneous change in the divorce and fertility rates at the macro-social level makes the study of the stability of marriage from the perspective of children more meaningful.
Moreover, the uniqueness of Chinese society lies in the dual-division system between urban and rural areas. Urban and rural areas not only differ significantly at the level of modernization and cultural values but also display a huge difference in divorce rates (Wu 1999; Zeng 1995) and fertility rates (Guo 2004). This study explores whether these disparities affect the association between children and divorce risk differently in urban and rural areas.
In contrast to economic theories, sociological theories focus more on children’s effects on the division of labor within the family. The birth of a child creates “a common work and career” for the couple (Fei 1999). In the process of raising children together, interdependence is established between the couple through the division of labor. This “organic solidarity” is beneficial for maintaining a stable marital relationship (Durkheim 2000; Waite and Lillard 1991; Morgan et al. 1988).
Raising children requires enormous time, money, and emotion from both sides of a couple (Heaton 1990). Once divorced, the party (usually the father) that loses child custody is usually alienated from their children, destroys their relationship with their children, and then suffers severe mental anguish (Furstenberg et al. 1983). For the party (usually the mother) that obtains custody, the divorce can bring serious difficulties in life because the entire burden falls on one person’s shoulders (Waite and Lillard 1991). Therefore, in order to avoid its adverse effects, some couples may abandon the intention to divorce (Thornton 1977). Moreover, after having children, pressure from social norms and cultural traditions are stronger in discouraging divorce (Waite and Lillard 1991). Studies have found that most couples believe that divorce is harmful for children. For the sake of their children’s healthy growth, some emotionally damaged couples may choose to continue the marriage (Thornton 1977; McLanahan and Bumpass 1988).
In addition to the direct impacts mentioned above, children may also affect the stability of marriage indirectly (Figure 3,c) through marital satisfaction (Figure 3,b). Some studies suggest that having children itself is a source of happiness (Heaton 1990). Watching children growing day by day, the couple gains a sense of accomplishment and happiness (Hoffman and Manis 1978). As a third party, children become a couple’s “media for bonding psychologically” (Fei 1999), and thus contribute to adjusting the couple’s relationship and resolving disagreements (Thornton 1977).
Other studies suggest that children have a negative impact on marital satisfaction (Belsky et al. 1983). Parenting is not an easy thing. After the child is born, the couple must undergo a significant adjustment to adapt to their new role as parents; the higher the number of children, the more difficult the adaptation. Sometimes, the children themselves can become the root causes of conflicts between the couple (Rollins and Galligan 1978; Worthington and Buston 1986). For example, after having children, a fundamental change occurs in a couple’s assignment of housework, work, and leisure time. The result is less and less time for emotional communication between the husband and wife. Empirical studies have found that couples with children have lower marital satisfaction (Belsky et al. 1983; Hoffman and Manis 1978). This low level of satisfaction has been interpreted differently. Some people believe that the presence of children may negatively affect marital satisfaction because children are like a kind of glue that can stick the dissatisfactions together (Glenn and Mclanahan 1982).
Finally, marital satisfaction may also affect the decision to bear children (Figure 3,d). People in marriages with conflicts have a lower desire. Unhappy marriages may lead to lower frequency of sexual intercourse and may result in the couple using more effective means of contraception and even abortion to avoid unwanted pregnancies (Udry 1971). Although some studies suggest that divorce risk and the number of children have a negative relationship, a different interpretation thus exists. When couples are facing potential divorce, they are less likely to have children (Thornton 1977).
Theoretically, children can have both a positive impact on the stability of marriage (positive direct effect a and positive indirect effect of b × c) and a negative impact (negative indirect effect of b × c). The relationship between children and marital stability may also be spurious, caused by common factors of marital satisfaction (Figure 3; marital satisfaction affects both the presence of children d and the stability of the marriage). Such theoretical complexity results in the complexity of empirical findings.
Hypothesis 1: Couples with premarital birth have a higher divorce risk.
Second, the number of children is important. Most studies suggest that the number of children has a linear relation with divorce risk in that the greater the number of children, the lower the risk of divorce (White 1990; Waite and Lillard 1991; Hoem and Hoem 1992; Goode 1993; Tzeng and Mare 1995; Weiss and Willis 1997; Jalovaara 2001; Coppola and Di Cesare 2008). However, some researchers have found that the number of children and divorce risk has a U-shaped nonlinear relationship and that either too many or too few children are not favorable to the stability of a marriage (Thornton 1977). Intuitively, an increase in the number of children increases a couple’s marriage capital and improves and promotes the couple’s feelings and interdependence, but these gains may have a diminishing marginal effect. As the number of children increases, the burden of raising children becomes increasingly heavy and the negative impact from children also increases. Therefore, the nonlinear relationship may be more realistic.
Hypothesis 2: The higher the number of children, the lower the risk of divorce; however, once the number increases more than the marginal quantity, it increases the risk of divorce.
Hypothesis 3: Younger children have a stronger protective effect on marriage.
Finally, studies have found that boys are more favorable to the stability of marriage (Morgan et al. 1988). Fathers play a more important role in raising sons, and thus are more involved in family issues. In this case, the wife feels more satisfied with the husband, and thus, the stability of the marriage is higher (Morgan et al. 1988). Similar findings also appear in the study of divorce tendency. Katzev et al. (1994) find that compared to mothers with sons, mothers who have only daughters think that their marriages are more likely to end in divorce. However, some researchers have found that children’s gender does not significantly affect divorce risk (Andersson and Woldemicael 2001; Diekmann and Schmidheiny 2004).
Hypothesis 4: Couples with sons have a lower divorce risk.
Compared to Western society, Chinese society has unique characteristics. To some extent, divorce was prohibited since ancient times in China because of its potential harm to marriage stability and violation of the dominant Confucian laws. In traditional Chinese culture, the intent of marriage was not the love and happiness of the husband and wife but to produce children, especially sons, to keep the family name alive (Zeng 1995). Therefore, childbearing and childrearing are inherent purposes of Chinese marriage. This is essentially different from Western society, where marriage is a private, matter and getting a divorce is perceived as an act of freedom (Zeng 1995). If children stabilize marriages and parents need to make sacrifices in order to raise children, this kind of stabilizing effect and sacrifice should be more evident in Chinese society.
Hypothesis 5: The protective effect of children on marriage is stronger in rural areas than in urban areas.
Moreover, the uniqueness of Chinese society is also reflected in the strong son preference. For cultural purposes such as carrying on the family line and practical purposes such as raising children for future old-age care, Chinese couples prefer boys. This gender preference may result in couples raising children in different ways. Given the country’s strict limitation on the number of births, if the wife does not give birth to a boy, it may cause fundamental conflicts for couples. Once again, this gender preference is stronger in rural areas.
Hypothesis 6: The impact of children’s gender on divorce risk is stronger in rural areas than in urban areas.
The data used in this study was drawn from the first wave of the CFPS in 2010. CFPS is a large-scale comprehensive social survey conducted by the Institute of Social Science Survey at Peking University. This survey employs an implicit stratified multistage PPS sampling design and covers 25 provinces in mainland China (excluding Inner Mongolia, Xinjiang, Tibet, Hainan, Ningxia, and Qinghai), representing about 95% of the Chinese population.
In the first wave of CFPS, each family was asked to complete a family-member questionnaire regarding the relationship of family members living together, as well as basic demographic and socioeconomic information regarding themselves, their parents, their spouses, and their children. Each of the surveyed households then answered a household questionnaire to gather further information on household income, expenditures, housing, living conditions, and other family issues. Finally, each family member in the household answered a personal questionnaire. There were two versions of this questionnaire, the child’s version and the adult’s version, based on the respondent’s age. The personal questionnaire included questions on education, work, marriage, health, time use, and so on.
In the first wave of data collection in 2010, CFPS received a total of 14,960 valid family-member questionnaires, 14,798 household questionnaires, 33,600 adult questionnaires, and 8,990 child questionnaires. This study is mainly based on the adult sample, but unmarried respondents were removed from the analysis. The unit of analysis is the pair in the “first marriage.” If both spouses in their first marriage answered the adult questionnaire, they were counted as one couple. After deleting unreasonable valuesb and removing missing values, 16,466 pairs of first marriages entered into the analysis.
CFPS asked about each couple’s marital history, including the date of their first marriage, respondent’s birth date and that of their first spouse, whether their first marriage ended in divorce and the date of divorce, and whether their first spouse died and the date of death. In addition, CFPS also asked about the reproductive history of each couple, including the birth date of each child and child’s gender. Based on this information, we can analyze in detail how timing of births and number, age, and gender of children affect the divorce rate during the family life cycle.
Except for premarital birth, all the independent variables associated with children, namely number of children, children’s age structure, and gender structure, change throughout the duration of the marriage. These three variables are time-varying variables. Time-varying variables can capture the changes that occur over time; due to the introduction of time, the value of independent variables always precedes that of the dependent variables, and causation is clearer. Even so, the analysis is still not completely unaffected by the possibility of reverse causation. Couples may feel divorce is a future risk and intentionally suppress current fertility (Figure 3,d).
In terms of operationalization, the existence of premarital birth is a dichotomous variable. If the birth of the respondents’ first child occurred earlier than the date of marriage, the value is assigned 1, otherwise 0.
The number of children refers to the absolute number of children that couples have at a specific time point, and is thus a time-varying variable.
Four variables report children’s age structure, namely the number of children aged 0, the number aged 1 to 5 years, the number aged 6 to 12 years, and the number of children aged 13 and over. The total of the four variables is the total number of children couples have at a particular point of time. This categorization is based on the findings of Waite and Lillard (1991), who find that couples experience a “honeymoon” period after each new birth and that the marriage is most stable during these times. Preschoolers (children under 6 years old) are strongly dependent on their parents, so couples’ divorce risk is relatively low; however, children over the age of 13 adversely affect the stability of marriage. To test the applicability of these findings in China, this study divided children into the four groups shown above.
The variable reflecting the gender structure of child is a dichotomous variable. If the couple gave birth to boy(s) before a particular point of time, the value is 1, otherwise 0.
In addition to these key independent variables, duration of marriage, date of marriage, provinces, urban or rural areas, wife’s age at first marriage, and education were also controlled in the analysis. Since these variables are relevant to both independent and dependent variables, they must be controlled in the model.
Studies have found that divorce risk shows an inverted U-shaped curve in the duration of the marriage (Vignoli and Ferro 2009; Lyngstad 2004); number of children, gender, and age structure also changes with the duration of the marriage. Therefore, duration of marriage has to be controlled. Applying the Cox proportional hazards model to this study intrinsically controls for the duration of marriage and so avoids this problem.
Second, existing research also found that influenced by national policy, China’s divorce rate differed significantly in different historical periods (Zeng 1995). In the early years, China experienced a peak in the divorce rate; later, affected by the Cultural Revolution in the late 1960s and throughout the 1970s, China’s divorce rate dropped to a very low level (Ye and Lin 1998). During the implementation of the reform and opening-up policy and the promulgation of the new Marriage Law in the 1980s, China’s divorce rate began to rise continuously (see Figure 1).
Due to different fertility policies, China’s birth rate also differs significantly in different historical periods. In order to avoid interference, this study divides the entire time span into five periods: the first period is prior to 1966 when the Cultural Revolution began; the second period spans from the beginning of the Cultural Revolution in 1966 to the promulgation of the new Marriage Law in 1980; the third period is the early years of reform and opening up from 1981 to 1991; the fourth period is from 1992 to 1999 when the economic reform in China accelerated; and the fifth period begins in 2000 when China entered the new century. Figure 1 shows that this period has witnessed a significantly rapid rise in the divorce rate. Historical period is also a time-varying variable because over the duration of a marriage, the couple may experience a number of historical periods.
Once again, China’s divorce rates also showed significant regional differences and urban-rural differences (Zeng 1995). Due to differences in the level of social development, cultural traditions, and fertility policies among different provinces and between urban and rural areas, fertility rates also have significant regional differences. In order to eliminate confounders, provinces and urban/rural are also controlled in the model. Specifically, CFPS investigated a total of 25 provinces; in the analysis, they are treated as fixed effects. Rural-urban division is based on whether respondents have a village committee or residential committee. This is not only an important control variable, but in its interaction with children, it is also an important factor studied by this work.
Because of migration and mobility, place of residence may change over time; thus, the provinces and urban/rural areas are also time-varying variables. However, the data did not collect the migration history of respondents, so we can only control for the provinces and the urban/rural areas in which respondents currently reside. In addition to residential areas, household registration status can also be used to determine urban/rural areas. This study used the residential area to distinguish rural from urban for two main reasons. First, migrants from rural to urban areas have a certain particularity, and because of their urban experiences, their concept of marriage and childbearing may change. Thus, merging them with those left behind in rural areas may not be appropriate. Second, defining urban/rural according to household registration can bring ambiguities in the operationalization because the husband and wife may have different household registration status. For couples living in two separate places, especially people who have been divorced, we only have the information of the individual answering the questionnaire, which makes it difficult to operationalize. In order to test sensitivity, we also repeated the analysis by using household registration status to distinguish rural from urban and found that the results are consistent.
Finally, some studies have found that couples’ level of education and age at first marriage also affect divorce risk. Years of education indicate the openness of the concept of marriage; thus, the higher the level of education the more likely they are to divorce. Studies on age at first marriage show that marrying too young is not beneficial to the stability of a marriage (Waite and Lillard 1991; Heaton 1990). Empirically, the husband’s age at first marriage and years of education have a strong correlation with the wife’s, but the impact of years of education and age of the wife on birth is more direct, and therefore, we control for the wife’s age at first marriage and years of education in this study.
Descriptive statistics on when couples married
Historical period (year)
Prior to 1966
1966 to 1980
1981 to 1991
1992 to 1999
2000 to 2010
Wife’s age at first marriage
Wife’s years of education completed
Changes in number of children, children’s age, and gender in the duration of marriage
2 years after marriage
5 years after marriage
10 years after marriage
20 years after marriage
Number of children
Children aged 0
Children aged 1 to 5
Children aged 6 to 12
Children aged 13 and above
Note that in Table 2, the size of the sample dwindles with the duration of marriage for two reasons. First, some divorced or widowed couples ended their first marriage before 2010. These couples do not appear in subsequent years after divorce or losing a spouse. Second, some married couples only had a very short marriage history when they were surveyed. For example, couples that married in 2006 cannot be part of the sample of marriages of 10 or 20 years when they were surveyed in 2010.
Distribution of marital status in 2010
The statistical model used in this study is the Cox proportional hazards model. This model has advantages over other survival models (Allison 1995). First, it is a semiparametric model, which means it does not require presetting the function form of the divorce hazard. Second, though its assumptions are weaker than parametric models, model estimates still have good statistical properties, and the efficiency of statistical tests does not suffer greatly. Third, with respect to parameter models, the Cox proportional hazards model can easily deal with time-varying independent variables, such as the number, age, and gender of children. Therefore, this model is ideal for our research purposes.
To include time-varying variables in the analysis, this study converts the data into person-year format. When the model is set, all first marriages are under risk of divorce from the beginning of the marriage. Couples who were still married in 2010 are constantly in the risk set. Divorced and widowed couples exit the risk set after the occurrence of the event. The variable that indicates the occurrence of divorce is assigned the value of 1 for divorced couples only in the year when the divorce occurred; the value assigned to married and widowed couples during the risk set is always 0.
Bivariate descriptive analysis
Further investigation reveals that the gap between couples with no children and with one child is wide, the gap between couples with one child and two children is relatively narrower, and the gap between couples with two and three or more children is the narrowest. Therefore, intuitively, the marginal effect of the number of children on marital stability diminishes with the increase in the number.
As can be seen in Figures 4, 5, 6, survival curves are parallel and there are no intersects, indicating that the independent variables involved in the figures meet the proportional hazard assumptions underlying the Cox proportional hazards model. In addition to these variables, we also tested the proportional hazard for each of the control variables one by one, using the graphic method prior to applying the Cox model. This showed that all variables meet this assumption.
In this paper, we used the Cox proportional hazards model. To test the robustness of the results, we also tried other modeling methods. Figure 7 shows that the survival function for each historical periods does not display any intersection; however, considering that the survival function in different periods may have different shapes, we also applied a stratified Cox model. We treated different historical periods as different layers and found that this was entirely consistent with the results obtained by the Cox model. In addition, when one takes into account that the measurement for the time of divorce is in years, this may not satisfy the assumption of a continuous-time risk model of the Cox model. We also tried a discrete-time hazard model and found that the results from this model were consistent with the Cox model. Due to space limitations, we only report the estimation results of the Cox model.
Results of model analysis
Results of the Cox proportional hazards model
Period (before 1966 = 0)
1966 to 1980
1981 to 1991
1992 to 1999
2000 to 2010
Urban (rural = 0)
Wife’s age at first marriage
Wife’s years of education
Premarital birth (no = 0)
No. of children
Square of no. of children
No. of children aged 0
No. of children aged 1 to 5
No. of children aged 6 to 12
No. of children aged 13 and above
Have boy (no = 0)
Urban × no. of children aged 0
Urban × no. of children aged 1 to 5
Urban × no. of children aged 6 to 12
Urban × no. of children aged 13 and above
Urban × have boy
According to the regression coefficients of the four historical periods, the divorce risk during 1966 to 1980 was lower than before 1966, and the divorce risk during 1981 to 1991 was higher than before 1966. However, both the statistical tests are not significant. In contrast, the divorce risk of the two historical periods after 1992 is significantly higher, with the highest after 2000.
Divorce risk is higher for urban couples than rural couples. The younger the wife’s age at first marriage and the higher her level of education, the higher the divorce risk. This is consistent with previous findings. In Models 5 and 6, the statistical tests for the coefficient of urban/rural areas are not significant after adding the interaction term. With interactions in the model, the theoretical meaning of the main effect of urban/rural areas differs from the previous four models, so they cannot be directly compared.
Model 1 included whether couples had a premarital birth and the number of children. Even after controlling for other variables, the divorce risk for couples with premarital birth is still higher and statistically significant. From Model 1 to Model 6, the regression coefficients and the results of statistical tests are very consistent, which fully demonstrates that premarital birth is not favorable to the stability of marriage. Therefore, Hypothesis 1 is supported by the model.
Model l also shows that after controlling for other variables, the divorce risk significantly decreases as the number of children increases. But different from Model 1 that assumes a linear relationship between number of children and divorce risk, Model 2 assumed a U-shaped quadratic relationship. The statistical test for the quadratic term of the number of children is very significant, suggesting the existence of a nonlinear relationship between the number of children and divorce risk.
Based on simple calculation, when the number of children is equal to 4.3, the quadratic curve drops down to the lowest point. Since the majority of the couples in the sample have fewer than five children, it can generally be assumed that the divorce risk decreases as the number of children increases, but due to the presence of the quadratic term, the rate of decline is not linear. The decline is largest when the number of children increases from 0 to 1 and is smaller when the number increases from 1 to 2, and so on. Further analysis found that if the number of children is included in the model as a categorical variable, couples with four children and couples with five or more children have roughly the same divorce risk (results are not presented in the table). That is, when the number of children increases to four, further increase does not reduce the divorce risk. This finding fully demonstrates that the number of children has diminishing marginal effects on marriage stability, which confirms Hypothesis 2.
Model 3 divided children into four age groups. In the different age groups, an increase in the number of children has a protective effect on marriage. The impact is the largest for children aged 0, then those aged 1 to 5, followed by those aged 6 to 12; children aged 13 years old and over have the minimum impact.
To test the effects of children’s age, we imposed a linear constraint on the four age groups, that is, they were treated as having the same effect. Results of likelihood ratio chi-square showed that the fit of the model was significantly lowered (p < 0. 01) after the constraint. This demonstrates that the regression coefficients of the four variables are not equal, that is, children of different ages have different effects on divorce risk. From the coefficients, we can conclude that the younger the children, the greater the protective effect. Therefore, Hypothesis 3 is supported as well.
Model 4 added a variable indicating whether a couple has a boy on the basis of Model 3. As is shown in the table, after controlling for other variables, the divorce risk is significantly lower for couples with boys. Therefore, Hypothesis 4 is also supported.
In Model 5, we added the interaction terms of urban/rural areas with the number of children based on Model 4. The effects of the number of children aged 0 have no significant differences between urban and rural areas, but the effects for those aged 1 to 5, those aged 3 to 12, and children aged 13 and older are all significantly different. The regression coefficients of the three interaction terms are positive, which indicates that the protective effect on marriage of children in urban areas is weaker than in rural areas. Therefore, Hypothesis 5 is supported.
Finally, Model 6 incorporated the interaction term of urban/rural areas and the gender of children based on Model 4. The estimate of the interaction is significantly positive, which indicates that the effect of boys is weaker in urban areas than in rural areas. Therefore, Hypothesis 6 is also supported.
Discussion and conclusions
Existing studies show that premarital births and the number, age, and gender of children have significant impacts on couples’ divorce risk, but no study has systematically examined the relationships between children and divorce risk in China to date. Based on the first wave of the CFPS in 2010, this study explores this issue for the first time.
We found that all the above variables have significant impacts on divorce risk in China. Specifically, couples with no premarital births have lower divorce risk, and the greater the number of children, the more stable is the marriage. However, the protective effects of the number of children have diminishing marginal effects; the lower the child’s age, the lower is the divorce risk, and couples with boys have lower divorce risk. These findings are all consistent with the results of previous studies in Western societies, which demonstrates that, as a link between the couple, children are extremely important for maintaining a stable marital relationship and resolving family conflicts.
In addition, this study found that the impact of children on divorce risk is significantly different between urban and rural areas. The protective effect of children is stronger in rural areas than in urban areas, and the protective effect of boys is stronger in rural areas as well. These differences may reflect the huge gap in terms of the level of socioeconomic development and cultural traditions between urban and rural areas.
Due to special cultural traditions, China’s divorce rates have long been low. In traditional Chinese culture, the intent of marriage was not the love and happiness of the couple, but for childbearing and rearing, the whole family. Therefore, it is essentially different from that in Western society (Zeng 1995). However, since the introduction of the reform and the opening-up policy, China has undergone substantial changes in terms of economic growth and cultural values. With the rapid pace of socioeconomic and cultural changes, people’s concept of marriage and the family has also changed dramatically and drastically (Zeng 1995).
This study found that, compared with the relatively isolated rural areas, the effect of children on marriage stability is significantly weaker than in the relatively more developed urban areas. To some degree, this confirms the impact of the change in the concept of marriage and public opinions on divorce. In addition, premarital birth is not favorable to the stability of marriage, which also confirms that an open attitude toward marriage leads to higher divorce risks. All these findings show that change in the marriage concept is an important reason for the recent increase in China’s divorce rate. It is foreseeable that with the rapid pace of economic increase and cultural change, China’s divorce rates will continue to rise.
In addition to the changes in the concept of marriage, the impact of the declining fertility rate on the stability of marriage should not be neglected. Due to the implementation of a strict family planning policy and overall socioeconomic development, China’s fertility rates have continued to decrease since the 1970s (see Figure 2). The decline in the fertility rate lowered the rate of population growth, which made tremendous contributions to China’s socioeconomic development. On the other hand, for families, the decline in the fertility rate means the decline of couples’ joint resources or the decline of specific marriage capital. At the same time, it also means that the chance of having a boy is reduced, and the duration of having a young child in the family is shortened, thereby greatly increasing the instability of marriage and the family.
Although this study does not directly discuss the relationship between the fertility rate and divorce rate, the findings imply an association between the two. Therefore, one can assume that the decline in the fertility rate may be an important cause for the increase in the divorce rate.
aThe population replacement level is the fertility rate required to maintain the population. It varies with the mortality rate. For the current mortality rate in China, scholars usually use the replacement level of 2.1 (Guo 2004).
bUnreasonable values refer to date of divorce or being widowed occurring earlier than the start of the first marriage. The numbers of the two kinds of unreasonable values are six and three, respectively; thus, deleting them does not significantly affect the entire sample.
cAt the beginning of the first marriage, the historical period is the same as the date of marriage. As time goes on, historical periods change. For example, a couple that married in 1966 and were still married in 2010 when the survey was conducted would have experienced five different historical periods. In the analysis, the time-varying variable representing the period can capture this change.
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