• Clinical and Experimental Reproductive Medicine
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• v.46 no.1
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• pp.22-29
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• 2019

Objective: As paternal age increases, the quality of sperm decreases due to increased DNA fragmentation and aneuploidy. Higher levels of structural chromosomal aberrations in the gametes ultimately decrease both the morphologic quality of embryos and the pregnancy rate. In this study, we investigated whether paternal age affected the euploidy rate. Methods: This study was performed using the medical records of patients who underwent in vitro fertilization (IVF) procedures with preimplantation genetic screening (PGS) from January 2016 to August 2017 at a single center. Based on their morphological grade, embryos were categorized as good- or poor-quality blastocysts. The effects of paternal age were elucidated by adjusting for maternal age. Results: Among the 571 total blastocysts, 219 euploid blastocysts were analyzed by PGS (38.4%). When the study population was divided into four groups according to both maternal and paternal age, significant differences were only noted between groups that differed by maternal age (group 1 vs. 3, p= 0.031; group 2 vs. 4, p= 0.027). Further analysis revealed no significant differences in the euploidy rate among the groups according to the morphological grade of the embryos. Conclusion: Paternal age did not have a significant impact on euploidy rates when PGS was performed. An additional study with a larger sample size is needed to clarify the effects of advanced paternal age on IVF outcomes.

• Korean Journal of Child Studies
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• v.26 no.5
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• pp.311-330
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• 2005

The purpose of this study was to examine the paternal involvement tendency and its effect on adolescent's self-esteem for boys and girls. Subjects were 607 1st and 2nd grade middle school students in Busan. The data were analyzed by t-test, one-way Anova, Pearson's correlation, and multiple regression analysis. The results were as follows. The scores on paternal involvement were influenced by the amount of time spent with parents, 5days work a week of father, flexibility of leaving work-time of mother, regularity of holiday work of mother as well as adolescents' and fathers' sociodemographic characteristic. For boys, self-esteem was influenced by all sub-scales of paternal involvement : the leisure-life, proffering information, academic support, eveηday life, material support, discipline, and tradition-inheritance. For girls, self-esteem was influenced by leisure-life, proffering information, academic support, everyday life, and material supports.

• Korean Journal of Child Studies
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• v.9 no.1
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• pp.47-61
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• 1988

The primary purpose of this study was to investigate the relation between paternal self-esteem, child-rearing behaviors and child's self-esteem. The secondary purpose was to examine whether there were significant relational differences according to child's sex. 272 dyads consisting of fifth and sixth grade children in elementary school and their measured by the Self-Esteem Inventory (for children), the Self-Esteem Scale (for fathers), and the Iowa Parent Behavior Inventory: Father form. Pearson's r., F-test, and Ducan's multiple range test were used for data analysis. Paternal self-esteem was significantly associated with 'parental involvement', 'reasoning guidance', and 'intimacy'. Paternal self-esteem was positively correlated with girl's self-esteem. Child's self-esteem was positively related to 'parental involvement', 'limit setting', 'responsiveness', 'reasoning guidance' and 'intimacy'. In sex differences, only boy's self-esteem wasn't related to paternal 'limit setting'. Boys' self-esteem was strongly related to 'parental involvement', and girls' self-esteem was strongly related to 'reasoning guidance'.

• Journal of Family Resource Management and Policy Review
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• v.12 no.4
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• pp.103-116
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• 2008

The purpose of this study focused on paternal education semands of fathers. The subjects of this study were 213 in fathers with infant children. The findings of this study were as follows: First, paternal education demands are significantly different according to whether the parents have affectionate or denial child-rearing attitudes. Second, regarding paternal education demands according to child-rearing stresses, such as the sense of obligation and restriction, physical fatigue, the disposition of depression, and psychological damage of a child, these have a significant influence upon paternal education demands.

• Journal of the Korean Home Economics Association
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• v.37 no.11
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• pp.115-124
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• 1999

The relations of parental differential treatment perceived by children to their self-esteem were examined. The subjects were 299 fifth-and sixth-grade elementary school children (162 boys and 137 girls) in Seoul. The data were collected using two kinds of questionnaires on maternal and paternal differential treatment and a child’s self-esteem. The major findings are as follows: Firstborns received more differential maternal affection than secondborns, and both boys and firstborns received more differential maternal control than girls and secondborns. Differential paternal control varied as a function of a child’s sex and birth order, in which boys and firstborns received more differential paternal control than girls and secondborns, but differential paternal affection did not vary. Maternal differential treatments were related to self-esteem only in girls, indicating that the more differential maternal affection they perceived, the higher self-esteem they had, and the more differential maternal control they perceived, the lower self-esteem they had. Paternal differential treatments were not related to self-esteem both for boys and girls. The study emphasizes the crucial role of mothers on their daughters.

• Nutrition Research and Practice
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• v.5 no.2
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• pp.112-116
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• 2011

We investigated the effect of paternal folate status on folate content and expression of the folate transporter folate receptor ${\alpha}$ ($FR{\alpha}$) in rat placental tissues. Rats were mated after males were fed a diet containing 0 mg of folic acid/kg of diet (paternal folate-deficient, PD) or 8 mg folic acid/kg of diet (paternal folate-supplemented, PS) for 4 weeks. At 20 days of gestation, the litter size, placental weight, and fetal weight were measured, and placental folate content (n=8/group) and expression of $FR{\alpha}$ (n=10/group) were analyzed by microbiological assay and Western blot analysis, respectively. Although there was no difference observed in litter size or fetal weight, but significant reduction (10%) in the weight of the placenta was observed in the PD group compared to that in the PS group. In the PD group, placental folate content was significantly lower (by 35%), whereas $FR{\alpha}$ expression was higher (by 130%) compared to the PS group. Our results suggest that paternal folate status plays a critical role in regulating placental folate metabolism and transport.

• Korean Journal of Human Ecology
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• v.4 no.1
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• pp.11-25
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• 2001

The purpose of this study was to examine which of the variables were associated with generative fathering. The subject of the study is consist of 229 fathers who have 4∼6 years old in chonju. The data was gathered through questionnaires. The statistical analysis for this study were frequency. T-test. correlation. Anallysis of Variance(ANOVA), Multiple Regression. Cronbach's Alpha was used to test the reliability of the scales. The major results were as follows : First, there were no significant child's sex and birth in generative fathering. Second. there were significant father's job, income of home and type of family but there were no significant paternal education, father's age and where or not the mother works outside the home in generative fathering. Third. generative fathering was positively correlated with paternal childhood experience. paternal marital satisfaction and father's job satisfaction. Fourth, generative fathering was negatively correlated with parenting stress. Fifth, there were significant differences according to sex-role identity of father in generative fathering that is, generative fathering had more participation and responsibility when father had androgynous or feminine identity than when they had masculine or undifferentiated. Sixth, in multiple regression analysis, generative fathering was predicted significantly by paternal childhood experience, father's sex-role identity. paternal job satisfaction and parenting stress.

• Korean Journal of Child Studies
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• v.32 no.5
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• pp.67-84
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• 2011

This study examined the effects of parental control and children's autonomy on self-esteem, using a sample of 415 school-age children (208 boys and 207 girls) recruited in Seoul. Ordinary Least Square regressions revealed a variety of gender-based differences in the associations among these three variables. Boys with high maternal behavioral control had high levels of self-esteem, whereas girls under low paternal psychological and high behavioral control reported high levels of self-esteem. Boys with high maternal behavioral control and girls with high paternal behavioral control also reported high levels of autonomy. Autonomy was found to exert a positive impact on self-esteem for both boy and girls. Autonomy played a mediating role in the relationships between maternal behavioral control and self-esteem for boys, and between paternal behavioral control and self-esteem for girls. These findings highlight the differential influences of psychological control and behavioral control on autonomy and self-esteem, as well as the relative impact of the opposite sex parent on the development of autonomy and self-esteem in late childhood.

• Journal of the Korean Home Economics Association
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• v.49 no.5
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• pp.59-70
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• 2011

The purpose of this study was to examine the effects of family economic distress, paternal depression, marital relationship, and controlling parenting style on behavioral problems in young children and to present a program for their reduction. The participants of this study were 344 fathers, whose young children were attending kindergartens located in Cheongju city. Data were analyzed using descriptive statistics, frequency, factor analysis, reliability analysis, and Pearson's productive correlation, t and F-tests via the SPSS 12.0 program, with the path model analyzed using the AMOS 7.0 program. There were six paths where family economic distress, mediated by paternal depression, marital relationship, controlling parenting style, had effects on the behavioral problems in young children. However, the path where family economic distress had an indirect effect on the behavioral problems in young children via paternal depression and marital relationship appeared to be the most influential. Also, paternal depression appeared to have the most impact on young children's behavioral problems.

• Journal of Family Relations
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• v.23 no.2
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• pp.47-65
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• 2018

Objectives: The purpose of this study was to examine the effect of children's values, parent-child interaction, family cohesion and flexibility on paternal and maternal warmth and control parenting. Method: The sample used in this study included 806 parents of boys and 748 of girls who were first married couples and living together in the 6th wave of the Panel Study on Korean Children(PSKC). Hierarchical regression analyses were used to identify the effect of predictable variances on paternal and maternal parenting. Results: Variables found to have a statistically significant effect on parenting differed in terms of warmth and control parenting. Fathers who engaged in playing with their children were found to have a strong effect on paternal warmth parenting, whereas participation in children's activities has the strongest effect on maternal warmth parenting. Conclusions: This study suggested that there were differences in paternal and maternal warmth and control parenting according to the gender of the child. Further implications were discussed for exploring maternal and paternal parenting of young children.