Since the early 1960s, South Korea has been going through a rapid fertility decline, along with its socioeconomic development and effective family planning programs. After achieving a desired replacement level of fertility in 1984, the total fertility rate (TFR) of Korea has gradually declined to the level of lowest-low fertility. According to 2004 vital statistics, the TFR for Korea was 1.16-below the lowest-low fertility level of 1.3. Also, Korea's fertility rates have fluctuated and varied spatially, even at the level of low fertility. Undoubtedly, Korean family planning programs have been effective in population control through the last 40 years, but since 2000, the shift to pro-natal policies indicates that Korea's fertility transition is no longer a response to family planning policies. Rather, the level of socioeconomic development is still considered to have a significant effect on Korea's fertility decline. Thus, in this thesis, the primary objective is to examine the socioeconomic determinants of fertility differentials and the variation in low fertility among the counties in South Korea in 2004. Using data from the 2000 census and 2004 vital statistics, I tested the hypothesized relationships between the level of socioeconomic development and fertility based on the demographic transition theory (DTT), by estimating several Ordinary Least Square (OLS) multiple regression models. Specifically, socioeconomic predictors, such as agricultural attainment, labor force participation, and educational attainment, were primarily examined to test the validity of the DTT hypotheses. In addition, this thesis also examined the effects of women's status and traditional norms and cultural values on variation in fertility. My results showed that the DTT is applicable to an accounting of the variance in fertility rates among the Korean counties in 2004. Although the levels of fertility are extremely low all across the country, it is apparent that socioeconomic conditions are having an impact on fertility differentials in Korea.

Background: When asked what a desirable fertility level for populations might be, most politicians, journalists, and even social scientists would say it is around two children per woman, a level that has been labelled by demographers "replacement-level fertility." The reasons given for considering this level of fertility as something to aim at usually include maintaining the size of the labour force and stabilizing the old-age-dependency ratio. Objective: In this paper, we scrutinize this wide-spread view by introducing education in addition to age and sex as a further relevant source of observable population heterogeneity. We consider several criteria for assessing the long-term implications of alternative fertility levels and present numerical simulations with a view on minimizing the education-weighted total dependency ratio and complement this with the goal of reducing the amount of greenhouse gas emission in the context of climate change. Methods: We perform thousands of alternative simulations for different fertility levels (assumed to be constant over time) starting from empirically given population structures and derive the rate of fertility which yields the lowest level of our education-weighted dependency ratio. We study the sensitivity of our results to different parameter values and choose to focus on the actual populations of Europe and China over the course of the 21st century. Results: The results show that when education is assumed to present a cost at young age and results in higher productivity during adult age, then the fertility rate that on the long run keeps dependency at a minimum turns out to lie well below replacement fertility both in Europe and in China under a set of plausible assumptions. The optimal fertility level falls even lower when climate change is factored in as well. Conclusions: We conclude that there is nothing magical or particularly desirable about replacement level fertility. (authors' abstract)

John Bongaarts' proximate determinants model of fertility has accounted for over 90 percent of variation in the total fertility rate (TFR) of primarily developing nations and historical populations. Recently, dramatically low fertility rates across the globe have raised questions regarding whether this model could be applied to exclusively below-replacement nations. This study follows Knodel, Chamratrithirong, and Debavalya's 1987 analysis of fertility decline in Thailand by conducting in-depth case studies of the proximate determinants in two low fertility countries over time: South Korea, where fertility is well below the level of replacement, and the United States, where fertility has hovered around replacement level for many years. Then, the fertility-inhibiting effect of the proximate determinants is assessed by comparing the quantitative index representing each determinant measured in the 1960s/1970s with its measurement in the 2000s. For both years, I consider the fertility level that would prevail in the determinant's presence as well as the level that would exist in its absence. Finally, I use each of the indices to calculate the TFR and assess how the strength of the model varies over time in the two countries. Ultimately, results indicate that the proximate determinants model does not offer a clean picture of the fertility level in either South Korea or the United States; when trends uncovered by the case studies are compared to the results of the quantitative analysis, a number of inconsistencies are revealed. This suggests that certain components in the model may need to be respecified for more effective application in low-fertility contexts. However, that is not to say that it offers no insight into fertility at all or that it is no longer a useful tool. On the contrary, it is shown that the proximate determinants model holds a lot of potential for analysis in low-fertility nations. The implications of these results, as well as the need for improvements in international data collection efforts, are also discussed.

Background: The total fertility rate (TFR) in South Korea has fallen below 1.3 since 2001. The role of the rapid shift toward a late-childbearing pattern in driving Korean fertility decline to this ultra-low level has been little explored until now. Objective: We provide an in-depth analysis of period fertility trends by birth order in South Korea from 1981 to 2015, when the period TFR fell from 2.57 to extremely low levels. Methods: We combine census and birth registration data to estimate period and cohort fertility indicators by birth order. We compare changes in conventional TFR with tempo- and parity-adjusted total fertility rate (TFRp*) and their birth-order-specific components. Results: The tempo effect linked to the shift toward delayed childbearing has had a strong and persistent negative influence on period TFRs in South Korea since the early 1980s. Without the shift to later childbearing, period fertility rates in South Korea would consistently stay higher and decline more gradually, reaching a threshold of very low fertility, 1.5, only in 2014. The postponement of childbearing and the resulting tempo effect were strongest in the early 2000s, when Korean TFR reached the lowest levels. More recently, Korean fertility has been characterized by a diminishing tempo effect and falling first and second birth rates. This trend marks a break with the previous pattern of almost universal fertility and a strong two-child family model. Contribution: Our study demonstrates the importance of the tempo effect in explaining the shift to ultra-low fertility in South Korea and in East Asia.

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This thesis contributes to enhance our knowledge on fertility decisions by addressing two major issues. First, it contributes to the understanding of the factors behind the differences in fertility levels among European countries by adopting a holistic perspective. Second, it adds to the fertility topic by examining the whole fertility decision-making process using a dyadic and a life-course perspective to address the ‘fertility gap’ that exists between desired family size and the actual number of children. In order to provide these contributions, this thesis is structured as follows. After a detailed review of the literature, major attention is dedicated to the analysis of the differences in terms of fertility levels between the European countries (Chapter 2). Chapter 3 investigates the fertility decision-making process exploiting the unique information of HILDA, which allows for a dyadic as well as longitudinal analysis of the overall process. The last chapter examines in-depth the transition to parenthood among couples of diverse ethnic origins in Australia.

在台灣經歷少子化而後,國小超額老師問題相形嚴重. 故本論文以個案研究方式探討中型學校士東國小的資深與資淺教師為例,就學校歷史文化,課程設計,領導風格,及學校效能方面來探討教師在教職生涯滿意度與家長對教師之期望. / Since the phenomenon of low fertility rate emergent in Taiwan, the teacher of the primary education suffered and gradually caused the sever problem of the surplus elementary school teacher. Hence, the Shih-Tung elementary, a medium size school, is the scale aligned with optimal scale for government to borrow the experience. The thesis applied a case study method of in-depth interview for related party of teachers and parents of Shih-Tung Elementary School. Initially from retrieving the education core both from definition and ancient wisdom testing the true meaning for the primary education. It is discussed from the culture of the school, the belief of an organization, which is the symbol of pine, big pencil and eraser under persistent learning, preceding that, from the culture to the curriculum design in terms of characteristic of the school, the charm of the school which made less decline of the student enrollment. Moreover, from the leadership style to verify how it formed the consensus and the acceptance form the teachers, which later on lead the effectiveness of the school. Further, it is focused on the organizational behavior analysis applying the Hierarchy of Needs Theory and Motivator-Hygiene Theory to analyze the satisfaction factors of the teachers in the school. The main parts for the central idea are focused on the teachers’ attitude in relation with the satisfaction factors in the case school, in words, the organizational behavior of the case school. Hence, the discussions are brought under school culture and curriculum design, leadership style and school effectiveness, teachers’ working satisfaction and inspiration, parents’ expectation. Consequently, the result and suggestions are made for the 2 parts: one for the school, and the other for the government under the transition of the era. The suggestions are made for the school as to keep the culture and inheritance of the senior to the junior teacher as legacy, and improving the environment for more efficient purpose of using and curriculum design under innovated way under long history. And utilize the human resource of unmarried woman, and build a communicative talk relationship with the parents since the mutual understanding of both parties are changing from authorities to cooperative and increasing junior teachers in the near future.