Migration, trade and wages

This paper analyses the impact of immigration on the UK labour market using the GNP function approach. We find that an increase in the number of unskilled immigrants reduces the wages of unskilled domestic workers, though the quantitative impact of this increase is small. No discernible impact of migration is found for skilled native workers. The results also suggest that unskilled immigrant workers and imports are substitutes in production, whilst skilled immigrant workers and imports are complements.     

Environmental Hazards,Migration, and Race

This study contributes to our understanding of the association between internal migration patterns and environmentally hazardous facilities, with a focus upon race-specific outmigration at the county-level, nationwide. Among research suggesting inequalities with regard to the social distribution of environmental risk, selective migration is often implied to be a key dynamic leading to differential exposure to proximate environmental hazards. Nonetheless, the models presented here provide no evidence of differential migratory response by race to environmentally hazardous facilities, net of a wide array of socioeconomic controls for labor force opportunity, climate, and demographic structure. Future research should consider these associations at more precise geographies and/or at the individual level.     

Forced Displacement,Migration, and Fertility in Burundi

The civil war in Burundi (1993–2005) led to the forced displacement of a large part of the population. This study aims to explore how that displacement affected fertility behavior. Using a nationally representative, retrospective survey on birth and residential histories of 4,523 Burundian women, we examine the impact of conflict-induced displacement on fertility. These unique data enable us to distinguish between remaining-in-place, voluntary migration, and forced displacement, as well as to distinguish between periods spent “on the move” versus periods spent in residence in the new site. Adopting a semiparametric regression model, we analyze both the probability of the first pregnancy and the subsequent spacing of higher order pregnancies. We find that the risk of a first pregnancy was higher in the year in which a woman was forcibly displaced and lower in the year a woman migrated voluntarily. Residency in a new site increased the risk of pregnancy for both.     

Migration, fertility, and aging in stable populations

Fertility is below replacement level in all European countries, and population growth is expected to decline in the coming decades. Increasing life expectancy will accentuate concomitant aging of the population. Migration has been seen as a possible means to decelerate aging. In this article, I introduce a stable, open-population model in which cohort net migration is proportional to births. In this case, the migration-fertility trade-off can be studied with particular ease. I show that although migration can increase the growth rate, which tends to make the age distribution younger, it also has an opposite effect because of its typical age pattern. I capture the effect of the age pattern of net migration in a migration-survivor function. The effect of net migration on growth is quantified with data from 17 European countries. I show that some countries already have a level of migration that will lead to stationarity. For other countries with asymptotically declining population, migration still provides opportunities for slowing down aging of the population as a whole.     

Migration, health, and environment in the desert southwest

The “immigrant health paradox” has captured the attention of researchers struggling to understand why immigrants to the United States appear to have health advantages that would not be predicted by their socioeconomic position. This research extends prior analyses through examination of the potential role of environmental factors in explaining the immigrant health paradox. We use data from the Phoenix Area Social Survey, a survey conducted in 2006 of approximately 800 individuals. Multilevel ordered logistic models examine three health outcomes: self-rated health, heat stress, and asthmatic symptoms. An innovation is our multiple considerations of contextual factors, including neighborhood amenities, disorder, traffic counts, and the heat index. We have three key findings: (1) frequent local migration has negative impacts on health, (2) the local neighborhood environment partially mediates differences between US-born non-Hispanic Whites and foreign-born Hispanics, and (3) subjective measures of the local environment tend to have greater effects than objective measures. In sum, our analyses suggested a need for studies of place and health to consider migration and residential history as a factor shaping health outcomes. Further, regarding the immigrant paradox, the results suggest the need to move beyond a dichotomous measure of immigration contrasting international migrants with native-born residents.     

Health Selection,Migration, and HIV Infection in Malawi

Despite its importance in studies of migrant health, selectivity of migrants—also known as migration health selection—has seldom been examined in sub-Saharan Africa (SSA). This neglect is problematic because several features of the context in which migration occurs in SSA—very high levels of HIV, in particular—differ from contextual features in regions that have been studied more thoroughly. To address this important gap, we use longitudinal panel data from Malawi to examine whether migrants differ from nonmigrants in pre-migration health, assessed via SF-12 measures of mental and physical health. In addition to overall health selection, we focus on three more-specific factors that may affect the relationship between migration and health: (1) whether migration health selection differs by destination (rural-rural, rural-town, and rural-urban), (2) whether HIV infection moderates the relationship between migration and health, and (3) whether circular migrants differ in pre-migration health status. We find evidence of the healthy migrant phenomenon in Malawi, where physically healthier individuals are more likely to move. This relationship varies by migration destination, with healthier rural migrants moving to urban and other rural areas. We also find interactions between HIV-infected status and health: HIV-infected women moving to cities are physically healthier than their nonmigrant counterparts.     

资本形式、国家政策与省际人口迁移

文章运用条件罗吉特模型(CLGT),从省际迁移人口迁入省份选择性的角度,分析了省级社会经济因素和个体因素对不同性质的省际人口迁移行为的影响作用;讨论国家与政府在控制和引导人口迁移流向与流量时的政策问题。作者认为,国家宏观投资对中国的人口迁移与流动的宏观调控是部分失效的;三种资本由于各自目的不同,对人口迁移与流动的引导作用也不尽相同;省际迁移者对迁入省份的选择是个体在自身特征的基础上,对宏观经济状况的调整与适应。     

International Migration: Trends,Determinants, and Policy Effects

This paper synthesizes insights from new global data on the effectiveness of migration policies. It investigates the complex links between migration policies and migration trends to disentangle policy effects from structural migration determinants. The analysis challenges two central assumptions underpinning the popular idea that migration restrictions have failed to curb migration. First, post‐WWII global migration levels have not accelerated, but remained relatively stable while most shifts in migration patterns have been directional. Second, post‐WWII migration policies have generally liberalized despite political rhetoric suggesting the contrary. While migration policies are generally effective, “substitution effects” can limit their effectiveness, or even make them counterproductive, by geographically diverting migration, interrupting circulation, encouraging unauthorized migration, or prompting “now or never” migration surges. These effects expose fundamental policy dilemmas and highlight the importance of understanding the economic, social, and political trends that shape migration in sometimes counterintuitive, but powerful, ways that largely lie beyond the reach of migration policies.     

Migration,Marital Change,and HIV Infection in Malawi

Research on the relationship between migration and HIV infection in sub-Saharan Africa often suggests that migrants are at higher risk of HIV infection because they are more likely to engage in HIV risk behaviors than nonmigrants, and they tend to move to areas with a relatively higher HIV prevalence. Although migration may be a risk factor for HIV infection, I instead focus on the possibility that the HIV positive are more likely to migrate. Using a longitudinal data set of permanent rural residents and migrants from Malawi, I find that migrants originating from rural areas are indeed more likely than nonmigrants to be HIV positive and to have engaged in HIV risk behaviors. The increased HIV risk among migrants may be due to the selection of HIV-positive individuals into migration; I find that HIV-positive individuals are more likely to migrate than those who are HIV negative. The explanation for this phenomenon appears to be marital instability, which occurs more frequently among HIV-positive individuals and leads to migration after marital change.     

Migration, fertility, and state policy in Hubei Province, China

Despite China s one-child family planning policy, the nation experienced a slight rise in the birth rate in the mid-1980s. Many observers attributed this rise to the heightened fertility of those rural-to-urban migrants who moved without a change in registration (temporary migrants), presumably to avoid the surveillance of family planning programs at origin and destination. Using a sequential logit analysis with life-history data from a 1988 survey of Hubei Province, we test this possibility by comparing nonmigrants, permanent migrants, and temporary migrants. While changing family planning policies have a strong impact on timing of first birth and on the likelihood of higher-order births, migrants generally do not have more children than nonmigrants. In fact, migration tends to lower the propensity to have a child. More specifically, the fertility of temporary migrants does not differ significantly from that of other women.     

城乡劳动力流动与迁移回报率

本文从微观主体人力资本投资的角度来理解中国农村劳动力流动现象。提出应该将迁移作为一种投资方式单独进行考察。通过讨论迁移的预期成本和收益,发现与教育投资相比,迁移能得到较高的回报率,迁移回报率是吸引农村劳动力选择迁移流动到城市的重要因素。由此得出结论：农村劳动力向城市的迁移是一种理性选择的人力资本投资方式。要改变中国二十年来农村劳动力以低教育水平、低收入水平为特征的循环流动。必须尽快改善农村的人力资本投资环境。特别是教育环境．     

地区发展、经济机会、收入回报与省际人口流动

利用最新的第六次全国人口普查数据,本文考察了省际人口流动的空间模式,发现省际人口流动呈现明显的空间聚集态势.并进一步分析地区差异对省际人口流动的影响,结果表明：作为流出地,一个地区的经济发展水平对于人口流出具有显著的阻力效应,但经济机会的多寡和经济回报的高低并无显著的影响;作为流入地,一个地区的经济发展水平对于吸引人口流入并不具有显著的影响,其“拉力”主要表现为经济机会的多寡和经济回报的高低.因地区发展不平衡短期内难以改变、经济开放性会继续增强、收入地区分化仍将存在,加上更加自由的流动环境和不断改善的交通和通讯条件,省级人口流动在局部地区集中的趋势将会进一步被强化.     

Migration between India and Pakistan, 1951–61

A critical evaluation of the available data on migration between India and Pakistan in the 1951-61 decade leads to the conclusion that there was a substantial net migration of Pakistan-born persons into India, but only a negligible net migration of India-born persons into Pakistan. Annual administrative statistics published by the Indian Government suggest an immigration from Pakistan of the order of 1.16 to 1.32 million. More importantly, birthplace data from the Indian censuses indicate a net intercensal immigration of Pakistan-born persons amounting to 1.19 to 1.34 million, depending on the assumed level of mortality. The Pakistani census data on the India-born show no net influx from India during 1951-61. Intercensal growth rates for the populations of different religious faiths in Pakistan are consistent with the estimates of net immigration into India. The migrants and the survivors of their progeny are estimated to represent a net gain of about 1.68 million by India and to account for no more than 2.2 per cent of the total population growth in India during 1951-61.     

Migration Processes,Familial Characteristics,and Schooling Dropout Among Black Youths

This study uses data from the 2000 U.S. census to examine whether the schooling advantage of black immigrants’ children found in previous studies is robust. According to the results, the advantage associated with having migrant parents is not restricted to the children of immigrants. Black migrant parents, regardless of foreign-born status, have children with favorable schooling outcomes. Such parental-level influences, however, seem stronger among some immigrant groups than among native internal migrants. The study also suggests that the collective advantage of the children of immigrants is driven by positive migrant selectivity. Accordingly, comparisons between the children of native migrants and children in various immigrant groups reveal that the immigrant advantage is not robust. In fact, the results suggest that when immigrant ethnicity is considered, some children of immigrants may be disadvantaged relative to the children of native migrants. Among recent migrants, the children of native internal migrants also have more favorable outcomes than the children of immigrants, although these differences disappear after background factors are controlled. Further, internal-migrant and immigrant households are less likely to have characteristics that adversely affect schooling than nonmigrant households. Unsurprisingly, the children of nonmigrants have the worst outcomes among black youths.     

流动人口家庭迁居的经济决策

文章在家庭"理性人"假设的基础上构建家庭迁居的经济决策模型,对家庭的迁居决策进行实证分析。研究发现,家庭通过对迁居的货币价值进行精确衡量,在不同生命周期阶段、不同的家庭结构类型的条件下,形成不同的迁居行为。在家庭实际迁居的过程中,为了维持家庭的抚养、赡养等功能,家庭的迁居策略可能并非最优化的经济决策。流动家庭会将部分社会成本进行内部消化,以减少流动行为对传统家庭功能的削弱。