Kitae Sohn
Biographic Data
| ID | 3770994 |
|---|---|
| NAME | Kitae Sohn |
| GIVEN NAMES | Kitae |
| FAMILY NAME | Sohn |
| SIGNATURE | SOHN K |
| AFFILIATIONS | Konkuk University |
| ORCID | 0000-0001-5671-4625 |
| VERIFIED | Yes |
| TOTAL WORKS | 39 |
| TOTAL CITATIONS | 29 |
| AUTHOR COUNT | 39 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1955 |
| LATEST PUBLICATION YEAR | 2021 |
| H-INDEX | 3 |
Trust or distrust
More Educated Sex Workers Earn More in Indonesia
Although sex work is prevalent, little is known about the relation between education and the price of sex. This study analyzed a dataset of 8,817 Indonesian sex workers (SWs) to conduct an econometric analysis of the relationship between education and the price of sex. When the study controlled for demographic variables, an additional year of schooling was related to a 10 percent increase in the price. About half of this relation was explained by…
Having more siblings delays menarche in Indonesia
OBJECTIVES: Tanner (1968, Scientific American, 218(1), 21-27) concluded that having more siblings delayed menarche, but many subsequent studies have reported diverging results. We thus aimed to investigate whether the initial conclusion remains valid by controlling for sibship size and birth order together, analyzing a large number of observations, drawing on a nationally representative sample, adjusting for childhood socioeconomic status, and co…
The biological standard of living in Indonesia during the 20th century
Prevalence of context effects
No relationship between birth season and age at menarche in Indonesia
In utero conditions and menarche are two important themes in human development, so the influence of birth season on menarche is of great interest. We investigated the relationship between birth season and age at menarche in the tropics by analysing a nationally representative sample of an Islamic population with a large sample size. We extracted 10,190 ever-married women, mostly aged 15-49, from the Indonesian Family Life Survey (IFLS) and IFLS E…
Men's revealed preference for their mates' ages
Improvement in the biological standard of living in 20th century Korea
OBJECTIVES: We used age at menarche to understand improvement in the biological standard of living in South Korea during the 20th century. METHODS: The main dataset, the Korean National Health and Nutrition Examination Survey, provided a consistent source of nationally representative data with a large number of observations over a long period of time. We calculated mean ages at menarche by birth year and estimated the rate of decrease in age at m…
The Association between Height and Hypertension in Indonesia
Job dissatisfaction of the self-employed in Indonesia
The Null Relation between Father Absence and Earlier Menarche
Men's Valuation of Temporal Proximity to Female Virginity
© 2016 Taylor & Francis Group, LLCWe hypothesized that men value temporal proximity to female virginity and estimated the value of delaying a girl’s first sexual experience by analyzing 8,817 prostitutes in Indonesia. We regressed the log of the price of sex on age at first sex, current age, and their interaction term, along with covariates. An additional year’s postponement of first sex was associated with a 3.6% increase in the price of sex, wh…
Men’s revealed preferences regarding women’s ages
The influence of climate on age at menarche
Risk Incomprehension and Its Economic Consequences
Almost all theoretical and empirical studies implicitly assume that every economic agent understands the concept of risk. We exploited a unique feature of the Indonesian Family Life Survey and argued that this assumption may not apply to the developing world. A third of working men failed to understand the concept of risk, and this incomprehension did not result from a mistake or a preference for simple answers. Moreover, after applying OLS, we f…
Disappearing seasonality in birthweight
OBJECTIVES: We estimated seasonality in birthweight over time and assessed how seasonality changed. METHODS: We analyzed all full-term singletons (N = 8,268,693) born in South Korea in 1997-2014. We first pooled all years and regressed birthweight on birth season while flexibly controlling for a large set of covariates. We then repeated the analysis by birth year and charted the trends in seasonality in birthweight. RESULTS: When we pooled all ye…
The influence of birth season on mortality in the United States
OBJECTIVES: Birth season is related to a variety of later outcomes. Among them, mortality is of great interest because it represents lifetime health outcomes. We examined the relationship between birth season and mortality in the US. METHODS: We merged the US National Health Interview Survey (NHIS) and NHIS public-use linked mortality files and analyzed 17,082 men and 19,075 women who were followed for 20 years from 1986 to 2006. We used the Cox …
The fatter are happier in Indonesia
Biological standards of living
Background Researchers typically use height to understand the growth environment, but recent evidence suggests that height does not reflect it well; height can even be misleading. Aim This study compared age at menarche and height to assess which better reflected the growth environment. Subjects and methods This study employed the Indonesian Family Life Survey to extract information on age at menarche from 7831 women and height from 7946 men, bot…
The trend in suicide methods in South Korea in 1997–2015
South Korea exhibited the highest crude suicide rate in the world. To better understand this phenomenon, the author analyzed all suicides in South Korea from 1997 to 2015 and charted the trend in suicide methods by gender. Over time, both genders rapidly chose hanging for suicide at the expense of drug/pesticide poisoning. Gassing was hardly used in the beginning, but its recent gain in use is noteworthy. Including undetermined deaths did not cha…
The Role of Spousal Income in the Wife's Happiness
The Trend in Age at Menarche in Indonesia
Employing the Indonesian Family Life Survey, this paper depicts the trend in age at menarche in Indonesia for women born in 1944–1988. Mean age at menarche decreased from 14.39 years for birth year 1944 to 13.18 years for birth year 1988. Subsequently, this trend is related to the improvement in material conditions, measured by GDP per capita in childhood. The OLS results indicate that this decrease is largely explained by the improvement in mate…
Is leg length a biomarker of early life conditions? Evidence from a historically short population
OBJECTIVES: While one group (Positive Group) has argued that leg length is a more accurate biomarker of early life conditions than height, another group (Negative Group) has challenged this argument. Analyzing Indonesian data, we attempt to reconcile these contrasting arguments. METHODS: The sample consists of 4,193 men and 4,684 women, aged 40-70. We regress leg length, trunk length, and height each on education (a proxy for early life condition…
The value of male height in the marriage market
Is age at menarche a good predictor of future body fat? The case of a developing country
Age at menarche has been proposed to serve as a predictor of future body fat for the developed world. Our aim in this study is to determine whether this is also the case for a developing country-Indonesia. We analyze nationally representative data, concerning 9,543 women aged 15-62 in 2007-2008, and find that the relationship between age at menarche and body mass index is negative and statistically significant. The size of the relationship, howev…
The influence of birth season on height
OBJECTIVES: Literature on the effect of birth month on height has generally considered regions in temperate climates. However, because many climatic conditions there change with seasons, it is difficult to isolate potential causes. This study estimated the effect of birth month and season on terminal height by analyzing the population of a country with only a few factors driving its climate. MATERIALS AND METHODS: The sample was derived from nati…
The Null Relation between Father Absence and Earlier Menarche
No relationship between birth season and age at menarche in Indonesia
In utero conditions and menarche are two important themes in human development, so the influence of birth season on menarche is of great interest. We investigated the relationship between birth season and age at menarche in the tropics by analysing a nationally representative sample of an Islamic population with a large sample size. We extracted 10,190 ever-married women, mostly aged 15-49, from the Indonesian Family Life Survey (IFLS) and IFLS E…
The Role of Spousal Income in the Wife's Happiness
Gender Discrimination in Earnings in Indonesia
This article analyses data from the 2007 Indonesia Family Life Survey in order to decompose the gender gap in earnings into explained and unexplained gaps, not only at the mean but also across the entire distribution. Women earned about 30% less than men, in both paid work and self-employment. The explained gap accounts for only about a quarter of the gap in paid work but for about half of the gap in self-employment. When the decomposition is mad…
More Educated Sex Workers Earn More in Indonesia
Although sex work is prevalent, little is known about the relation between education and the price of sex. This study analyzed a dataset of 8,817 Indonesian sex workers (SWs) to conduct an econometric analysis of the relationship between education and the price of sex. When the study controlled for demographic variables, an additional year of schooling was related to a 10 percent increase in the price. About half of this relation was explained by…
Men's Valuation of Temporal Proximity to Female Virginity
© 2016 Taylor & Francis Group, LLCWe hypothesized that men value temporal proximity to female virginity and estimated the value of delaying a girl’s first sexual experience by analyzing 8,817 prostitutes in Indonesia. We regressed the log of the price of sex on age at first sex, current age, and their interaction term, along with covariates. An additional year’s postponement of first sex was associated with a 3.6% increase in the price of sex, wh…
Sick But Unaware
Discrepancies between self-reported and measured hypertension pose a great risk to health because they prevent timely treatment. Analyzing the Indonesian Family Life Survey, we compared self-reported and measured hypertension to assess the extent of the misclassification of hypertension. Building on this, we estimated factors related to self-reported and measured hypertension. Our results show that different factors were involved in each case, su…
The Gender Gap in Earnings Among Teachers
This paper draws on the 1915 Iowa State Census Report to decompose the gender gap in earnings into explained and unexplained parts. A novel feature is that the decomposition is performed not only at the mean but also over the entire distribution of earnings. In addition, an entire state, rather than a few cities, is considered. This paper finds that at least 25.6 percent, and probably more, of the gap is unexplained by the main observable charact…
A note on the effects of education on youth smoking in a developing country
This paper investigates smoking behavior among youths and its relationship with education, cognitive skills, risk aversion and patience, using the Indonesian Family Life Survey. The results suggest that receiving an education above junior high school level is associated with a lower probability and intensity of smoking. Moreover, the effects of education remain robust even when variables that are considered to mediate the relationship between edu…
Did unemployed workers choose not to work in interwar Britain? Evidence from the voices of unemployed workers
This paper revisits the controversy over whether unemployed workers in interwar Britain chose not to work because unemployment benefits were too generous. Economists have generally neglected the actual expressions of unemployed workers on the subject, while focusing rather narrowly on the economic aspects of work. The paper takes seriously the voices of unemployed workers, providing economists with a historian's perspective. Unemployment brought …
Blood Groups of Koreans
Acting White
A note on the effects of education on youth smoking in a developing country
This paper investigates smoking behavior among youths and its relationship with education, cognitive skills, risk aversion and patience, using the Indonesian Family Life Survey. The results suggest that receiving an education above junior high school level is associated with a lower probability and intensity of smoking. Moreover, the effects of education remain robust even when variables that are considered to mediate the relationship between edu…
Did unemployed workers choose not to work in interwar Britain? Evidence from the voices of unemployed workers
This paper revisits the controversy over whether unemployed workers in interwar Britain chose not to work because unemployment benefits were too generous. Economists have generally neglected the actual expressions of unemployed workers on the subject, while focusing rather narrowly on the economic aspects of work. The paper takes seriously the voices of unemployed workers, providing economists with a historian's perspective. Unemployment brought …
Sufficiently Good Measures of Obesity
Obesity is pandemic, but no consensus has yet emerged regarding appropriate tools for measuring it. Medical research based on populations in the developed world has largely dismissed body mass index (BMI) because it is a weak predictor of some health outcomes. In contrast, social science research still relies on it for its simplicity and ready availability in surveys. This paper uses consistent definitions and measures to select sufficiently good…
Job Strenuousness and Obesity
This paper analyses the Indonesian Family Life Survey to show that job strenuousness is negatively related to obesity, which is largely consistent with the literature. However, this paper does not interpret the relationship as causal. Instead, efforts are made to demonstrate that the relationship is attributable to sample selection: workers with low socioeconomic status are lightweight and selected for strenuous jobs. This paper warns against ref…
Age and size at maturity in Indonesian women
OBJECTIVES: We test (McIntyre and Kacerosky's [2011]: Am J Hum Biol 23:305-312) prediction that the relationship between age at menarche and height switches from negative to positive, in a unidirectional and smooth manner, as the society industrializes. According to this prediction, a mid-level industrial country should exhibit a weak relationship between the two variables. METHODS: The 8,013 observations are extracted from the Indonesian Family …
The height premium in Indonesia
The Gender Gap in Earnings Among Teachers
This paper draws on the 1915 Iowa State Census Report to decompose the gender gap in earnings into explained and unexplained parts. A novel feature is that the decomposition is performed not only at the mean but also over the entire distribution of earnings. In addition, an entire state, rather than a few cities, is considered. This paper finds that at least 25.6 percent, and probably more, of the gap is unexplained by the main observable charact…
The Trend in Age at Menarche in Indonesia
Employing the Indonesian Family Life Survey, this paper depicts the trend in age at menarche in Indonesia for women born in 1944–1988. Mean age at menarche decreased from 14.39 years for birth year 1944 to 13.18 years for birth year 1988. Subsequently, this trend is related to the improvement in material conditions, measured by GDP per capita in childhood. The OLS results indicate that this decrease is largely explained by the improvement in mate…
Is leg length a biomarker of early life conditions? Evidence from a historically short population
OBJECTIVES: While one group (Positive Group) has argued that leg length is a more accurate biomarker of early life conditions than height, another group (Negative Group) has challenged this argument. Analyzing Indonesian data, we attempt to reconcile these contrasting arguments. METHODS: The sample consists of 4,193 men and 4,684 women, aged 40-70. We regress leg length, trunk length, and height each on education (a proxy for early life condition…
The value of male height in the marriage market
Is age at menarche a good predictor of future body fat? The case of a developing country
Age at menarche has been proposed to serve as a predictor of future body fat for the developed world. Our aim in this study is to determine whether this is also the case for a developing country-Indonesia. We analyze nationally representative data, concerning 9,543 women aged 15-62 in 2007-2008, and find that the relationship between age at menarche and body mass index is negative and statistically significant. The size of the relationship, howev…
Sexual stature dimorphism as an indicator of living standards
These results cast doubt on the argument for using SSD as an indicator of living standards
The Migration Patterns of US Female Teachers, 1860–80
Recently, a shared understanding has emerged concerning the migration patterns of US female teachers from 1860 to 1880, but the evidence is scattered in the literature and largely qualitative. This paper provides a unifying understanding of their migration patterns based on the US census. Our quantitative findings generally confirm the shared understanding. First, teachers more often migrated to urban than rural areas; higher wages and other form…
Gender Discrimination in Earnings in Indonesia
This article analyses data from the 2007 Indonesia Family Life Survey in order to decompose the gender gap in earnings into explained and unexplained gaps, not only at the mean but also across the entire distribution. Women earned about 30% less than men, in both paid work and self-employment. The explained gap accounts for only about a quarter of the gap in paid work but for about half of the gap in self-employment. When the decomposition is mad…
The influence of birth season on height
OBJECTIVES: Literature on the effect of birth month on height has generally considered regions in temperate climates. However, because many climatic conditions there change with seasons, it is difficult to isolate potential causes. This study estimated the effect of birth month and season on terminal height by analyzing the population of a country with only a few factors driving its climate. MATERIALS AND METHODS: The sample was derived from nati…
Sick But Unaware
Discrepancies between self-reported and measured hypertension pose a great risk to health because they prevent timely treatment. Analyzing the Indonesian Family Life Survey, we compared self-reported and measured hypertension to assess the extent of the misclassification of hypertension. Building on this, we estimated factors related to self-reported and measured hypertension. Our results show that different factors were involved in each case, su…
Men’s revealed preferences regarding women’s ages
The influence of climate on age at menarche
Risk Incomprehension and Its Economic Consequences
Almost all theoretical and empirical studies implicitly assume that every economic agent understands the concept of risk. We exploited a unique feature of the Indonesian Family Life Survey and argued that this assumption may not apply to the developing world. A third of working men failed to understand the concept of risk, and this incomprehension did not result from a mistake or a preference for simple answers. Moreover, after applying OLS, we f…
Disappearing seasonality in birthweight
OBJECTIVES: We estimated seasonality in birthweight over time and assessed how seasonality changed. METHODS: We analyzed all full-term singletons (N = 8,268,693) born in South Korea in 1997-2014. We first pooled all years and regressed birthweight on birth season while flexibly controlling for a large set of covariates. We then repeated the analysis by birth year and charted the trends in seasonality in birthweight. RESULTS: When we pooled all ye…
The influence of birth season on mortality in the United States
OBJECTIVES: Birth season is related to a variety of later outcomes. Among them, mortality is of great interest because it represents lifetime health outcomes. We examined the relationship between birth season and mortality in the US. METHODS: We merged the US National Health Interview Survey (NHIS) and NHIS public-use linked mortality files and analyzed 17,082 men and 19,075 women who were followed for 20 years from 1986 to 2006. We used the Cox …
The fatter are happier in Indonesia
Biological standards of living
Background Researchers typically use height to understand the growth environment, but recent evidence suggests that height does not reflect it well; height can even be misleading. Aim This study compared age at menarche and height to assess which better reflected the growth environment. Subjects and methods This study employed the Indonesian Family Life Survey to extract information on age at menarche from 7831 women and height from 7946 men, bot…
Demography (28 works) · Sociology (22 works) · Economics (19 works) · Indonesian (17 works) · Medicine (17 works) · Psychology (16 works) · Demography (14 works) · Population (14 works) · Geography (13 works) · Birth, Development, and Health (10 works)