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To estimate the within-households association between change in income over time and food purchases in a national panel of households. The need to shift towards healthy and sustainable diets is widely recognised, thus the importance of identifying the factors that influence food purchase decisions.
Design:
Longitudinal observational study; for each of the thirty-three food items queried, we ran a conditional logistic fixed-effect regression model to evaluate the association between change in income per-capita and food purchases (yes/no) during the past week, adjusted by covariates.
Setting:
Mexican Family Life Survey.
Participants:
6008 households that participated in the survey for at least two of the three available waves of study (2002, 2005 and 2009).
Results:
Within-households, the OR (95 % CI) of purchasing the food in the past week for an increase in 1 sd of income was 1·09 (1·02, 1·16) for rarer fruits (other than bananas, apples and oranges); 1·11 (1·04, 1·18) for beef; 1·06 (1·00, 1·13) for canned tuna/sardines; 1·09 (1·02, 1·18) for fish/shellfish; 1·08 (1·02, 1·16) for discretionary packaged products and 1·15 (1·08, 1·23) for soft drinks. There were some differences by urban/rural area or socio-economic status (SES); mainly, those with lower SES had increased odds of purchasing the food item in more cases (ten out of thirty-three food items).
Conclusions:
Households’ income growth can have mixed effects on the healthiness and sustainability of food purchases. Public policies to improve the food environment and nutrition education are necessary to enhance the positive and counteract the negative effect of income.
Chapter 2 considers the interaction of disability and other axes of discrimination and oppression in areas of the labor market, including employment status, benefits, and workplace environment. It outlines disability justice activists’ demands to increase employment access and economic stability for people with disabilities and identifies intersectional research strategies for incorporating multiple interacting statuses into economic analyses of labor market outcomes. Chapter 2 concludes with recommendations for guaranteeing equitable treatment of Black disabled people in proposals for a federal jobs guarantee, starting with the elimination of segregated facilities, trainings, and placements for disabled workers through Section 14(c) certificates.
Constrained econometric techniques hamper investigations of disease prevalence and income risks in the shrimp industry. We employ an econometric model and machine learning (ML) to reduce model restrictions and improve understanding of the influence of diseases and climate on income and disease risks. An interview of 534 farmers with the models enables the discernment of factors influencing shrimp income and disease risks. ML complemented the Just-Pope production model, and the partial dependency plots show nonlinear relationships between income, disease prevalence, and risk factors. Econometric and ML models generated complementary information to understand income and disease prevalence risk factors.
Economic historians of the Ottoman empire have recently made great progress in the study of quantitative data and the economy. They have used data from various sources, including tax registers, court records, and other types of surveys and financial accounts. Applying state-of-the-art analytical techniques to the data, they have examined numerous interesting questions regarding the Ottoman economy, population, and institutions in regions ranging from Anatolia and the Balkans to Syria, Palestine, and Egypt in the south, Georgia in the east, and Hungary and Poland in the north. We offer a basic introduction to the literature by surveying important developments since the beginning of the twenty-first century. The survey shows that this area of research has become a mature subfield of both Ottoman history and economic history.
Ultimatum proposals and dictator donations are studied when proposers can choose the income and sex of the responder. Responder attributes generated strong effects in the selection decisions; subjects preferred to send proposals to low-income responders and female responders were much more popular than males. Hence, signals of income and sex appear to be important in deciding with whom to bargain. We also report from an experiment where both responders and proposers could select co-player based on socioeconomic status and gender. Both female responders and proposers were strongly preferred. A weaker tendency was that high status subjects were favored.
Data from an RCT of IAPT Norway (“Prompt Mental Health Care” [PMHC]) were linked to several administrative registers up to five years following the intervention. The aims were to (1) examine the effects of PMHC compared to treatment-as-usual (TAU) on work-related outcomes and health care use, (2) estimate the cost–benefit of PMHC, and (3) examine whether clinical outcomes at six-month follow-up explained the effects of PMHC on work−/cost–benefit-related outcomes.
Methods
RCTs with parallel assignment were conducted at two PMHC sites (N = 738) during 2016/2017. Eligible participants were considered for admission due to anxiety and/or depression. We used Bayesian estimation with 90% credibility intervals (CI) and posterior probabilities (PP) of effects in favor of PMHC. Primary outcome years were 2018–2022. The cost–benefit analysis estimated the overall economic gain expressed in terms of a benefit–cost ratio and the differences in overall public sector spending.
Results
The PMHC group was more likely than the TAU group to be in regular work without receiving welfare benefits in 2019–2022 (1.27 ≤ OR ≤ 1.43). Some evidence was found that the PMHC group spent less on health care. The benefit–cost ratio in terms of economic gain relative to intervention costs was estimated at 5.26 (90%CI $ - $1.28, 11.8). The PP of PMHC being cost-beneficial for the economy as a whole was 85.9%. The estimated difference in public sector spending was small. PMHC effects on work participation and cost–benefit were largely explained by PMHC effects on mental health.
Conclusions
The results support the societal economic benefit of investing in IAPT-like services.
The political involvement of adolescents is characterized by a substantial socioeconomic gradient already at a young age with enduring effects into adulthood. This study investigates whether high parental income creates an enhancing environment that increases the influence of genetic dispositions on political interest using the German TwinLife study (2014–2020, age 10–29, n = 6,174, 54% female, 19% migration background). While 30–40% of the total variance in political interest of twin adolescents (age 10–18) can be attributed to genetic influences, a gene–environment interaction model shows that this share is much lower among poor compared to rich families. Family fixed-effects models among early adults further show no significant effect of income differences on political interest after controlling for family background and genetic influences. This study suggests that the income gap in political participation cannot be fully understood without accounting for life cycle processes and genetic background.
Households are frequently subject to income and asset shocks. We performed a lab experiment, inducing losses on a real effort task, after which we measured cognitive performance, loss aversion and cheating behavior. We found that asset losses, but not income losses, act as a cognitive load, by decreasing accuracy and increasing response times. We did not detect any change in dishonesty or loss aversion.
Several themes which are common to both econometrics and psychometrics are surveyed. The themes are illustrated by reference to permanent income hypotheses, simultaneous equation models, adaptive expectations and partial adjustment schemes, and by reference to test score theory, factor analysis, and time-series models.
Despite growing awareness of the mental health damage caused by air pollution, the epidemiologic evidence on impact of air pollutants on major mental disorders (MDs) remains limited. We aim to explore the impact of various air pollutants on the risk of major MD.
Methods
This prospective study analyzed data from 170 369 participants without depression, anxiety, bipolar disorder, and schizophrenia at baseline. The concentrations of particulate matter with aerodynamic diameter ≤ 2.5 μm (PM2.5), particulate matter with aerodynamic diameter > 2.5 μm, and ≤ 10 μm (PM2.5–10), nitrogen dioxide (NO2), and nitric oxide (NO) were estimated using land-use regression models. The association between air pollutants and incident MD was investigated by Cox proportional hazard model.
Results
During a median follow-up of 10.6 years, 9 004 participants developed MD. Exposure to air pollution in the highest quartile significantly increased the risk of MD compared with the lowest quartile: PM2.5 (hazard ratio [HR]: 1.16, 95% CI: 1.09–1.23), NO2 (HR: 1.12, 95% CI: 1.05–1.19), and NO (HR: 1.10, 95% CI: 1.03–1.17). Subgroup analysis showed that participants with lower income were more likely to experience MD when exposed to air pollution. We also observed joint effects of socioeconomic status or genetic risk with air pollution on the MD risk. For instance, the HR of individuals with the highest genetic risk and highest quartiles of PM2.5 was 1.63 (95% CI: 1.46–1.81) compared to those with the lowest genetic risk and lowest quartiles of PM2.5.
Conclusions
Our findings highlight the importance of air pollution control in alleviating the burden of MD.
The chapter examines the relationship between the size and diversity of the expellee population and entrepreneurship and occupational change in West Germany. Using statistical data at the municipal and county levels, it documents a reversal of fortune: although expellee presence presented economic challenges in the immediate postwar period, in the long run, it increased entrepreneurship rates, education, and household incomes. The more regionally diverse the expellee population, the better the long-run economic performance in receiving communities.
The chapter examines how the size and diversity of the migrant population shaped economic outcomes in western Poland using statistical analysis. It shows that when state institutions were extractive, the composition of the migrant population played no role in shaping economic performance. Once institutions became more inclusive, however, municipalities settled by more regionally diverse populations registered higher incomes and entrepreneurship rates. The chapter then rules out a series of alternative explanations for these findings.
In Africa, rangeland ecosystems have been exploited due to heavy and unsustainable grazing. Policy and institutional mechanisms such as integrating silvopastoral systems with sustainable grazing practices have been devised to mitigate the negative effects. In this study, we investigated whether the uptake of sustainable grazing management in the form of controlled grazing spurs investment in multipurpose trees (MPTs) and enhances income. Using instrumental variable regression, we find that controlled grazing increases not only the propensity to plant MPTs but also the number of tree species. More importantly, IV and treatment effect results indicate that controlled grazing enhances income from MPTs.
This section thinks about the relationship between compositional creativity, labour, and money. It outlines how artistic freedom and agency have often been inversely related to stable income, and suggests some ways that composers today might navigate these elements in order to monetise their work.
We start by introducing the key ingredients in macroeconomic modelling: investment, production, income and consumption, and explain the corresponding equilibrium conditions. Modelling these quantities in discrete time, we describe the multiplier-accelerator model, a classic model of macroeconomic dynamics, and an example of a second-order recurrence equation. We then embark on describing how to solve linear constant-coefficient second-order recurrence equations in general. The general solution is the sum of the solution of a corresponding homogeneous equation and a particular solution. There is a general method for determining the solution of the homogeneous equation, involving the solution of a corresponding quadratic equation known as the auxiliary equation.
To estimate the effect of income change on difficulty accessing food since the COVID-19 pandemic for South African youth and evaluate whether this effect was modified by receiving social grants.
Design:
A cross-sectional, online survey was conducted between December 2021 and May 2022. Primary outcome was increased difficulty accessing food since the COVID-19 pandemic. Income change was categorised as ‘Decreased a lot’, ‘Decreased slightly’ and ‘Unchanged or increased’. Multivariable logistic regressions were used, with an interaction term between social grant receipt and income change.
Setting:
eThekwini district, South Africa.
Participants:
Youth aged 16–24 years.
Results:
Among 1,620 participants, median age was 22 years (IQR 19–24); 861 (53 %) were women; 476 (29 %) reported increased difficulty accessing food; 297 (18 %) reported that income decreased a lot, of whom 149 (50 %) did not receive social grants. Experiencing a large income decrease was highly associated with increased difficulty accessing food during the COVID-19 pandemic (adjusted OR [aOR] 3·63, 95 % CI 2·70, 4·88). The aOR for the effect of a large income decrease on difficulty accessing food, compared to no income change, were 1·49 (95 % CI 0·98, 2·28) among participants receiving social grants, and 6·63 (95 % CI 4·39, 9·99) among participants not receiving social grants.
Conclusions:
While social grant support made a great difference in lowering the effect of income decrease on difficulty accessing food, it was insufficient to fully protect youth from those difficulties. In post-pandemic recovery efforts, there is a critical need to support youth through economic empowerment programming and food schemes.
There is extensive evidence that the COVID-19 pandemic has mostly affected the less well-off in society, boosting economic inequality. In contrast, little is known about how much such rising economic disparities affected the involvement of individuals in politics, thereby enhancing political inequality. Extending the research on political inequality to a key and somewhat neglected dimension of citizens’ involvement with politics - political engagement - this article claims that the COVID-19 depressed engagement and promoted political inequality. The analysis relies on a comparative European approach and on data before and after the emergence of the pandemic. Besides generally finding an overall socioeconomic gap with regard to political engagement, results also suggest that the pandemic somewhat lessened engagement, increasing the gap between the more and less socioeconomically advantaged. Generally, this is not strictly due to a tendency to decrease engagement among the latter but also to increase engagement among the former.
Smiths analysis of the relationship between division of labour and the wealth of nations interpreted as per capita income is illustrated, through their connection with productivity. The division of labour also explains the existence and characteristics of social stratification and alienation. The classical tripartition in social classes – capitalists, landlords and workers – is discussed, considering both its explanatory value and its limits. Division of labour evolves through time: Babbages laws, Taylorism, the production chain, mechanization. The international division of labour and international value chains are considered. Marxs communist utopia with the disappearance of compulsory labour is recalled and confronted with less unrealistic utopias concerning the command structure within the firm or Ernesto Rossis labour army.
The introduction of the 2012 Labour Code is considered ‘groundbreaking’ in industrial relations in Vietnam. However, knowledge about the effects of this law is still minimal. This study provides the first evidence of the impacts of the law on worker outcomes, disaggregated by location and migration status. The Vietnam Labour Force Survey is used as the primary dataset. Both difference-in-differences and fixed-effect models are applied in the investigation. The estimated results show a relationship between the introduction of the law and the labour supply of contracted workers in urban areas, especially long-term migrant workers. Furthermore, income for these long-term migrant contract workers was affected significantly by the introduction of the law. A link between the law and health insurance participation was also found among non-migrant contracted workers in urban areas. We also perform estimations using a short panel sample and find notable results. The study likewise reveals disadvantages of rural workers compared to urban workers in terms of earnings, and of short-term migrants compared to other workers, in terms of labour supply.
We provide an introduction to the world economy. World population levels have risen drastically since 1800, in conjunction with (per capita) income levels. Economic leadership regularly shifts from one country to another. Rich countries are usually well connected in terms of international trade, contacts, investments, migration and capital flows. Historians have identified two big ‘waves’ of economic globalisation: at the end of the nineteenth century and after World War II. These episodes show decreases in international price gaps and increases in relative international trade- and capital flows. The ‘fragmentation’ process, in which different parts of goods are provided in different nations before they are combined in final goods, is a relatively new phenomenon. The most recent wave of globalisation is slowing down at the moment (slowbalisation), but it remains to be seen how much the backlash against globalisation will affect trade- and cross-border investment in the years to come.