How Does Household Income Affect Child Personality Traits and Behaviors?

Estimating the causal effects of income on health: how researchers' definitions of "income" matter

BACKGROUND

There is a well-established cross-sectional association between income and health, but estimates of the causal effects of income vary substantially. Different definitions of income may lead to substantially different empirical results, yet research is often framed as investigating "the effect of income" as if it were a single, easily definable construct.

METHODS/RESULTS

The aim of this paper is to introduce a taxonomy for definitional and conceptual issues in studying individual- or household-level income for health research. We focus on (1) the definition of the income measure (earned and unearned; net, gross, and disposable; real and nominal; individual and household; relative and absolute income) and (2) the definition of the causal contrast (amount, functional form assumptions/transformations, direction, duration of change, and timing of exposure and follow-up). We illustrate the application of the taxonomy to four examples from the published literature.

CONCLUSIONS

Quantified estimates of causal effects of income on health and wellbeing have crucial relevance for policymakers to anticipate the consequences of policies targeting the social determinants of health. However, much prior evidence has been limited by lack of clarity in distinguishing between different causal questions. The present framework can help researchers explicitly and precisely articulate income-related exposures and causal questions.

Annual Research Review: Neuroimmune network model of depression: a developmental perspective

Depression is a serious public health problem, and adolescence is an 'age of risk' for the onset of Major Depressive Disorder. Recently, we and others have proposed neuroimmune network models that highlight bidirectional communication between the brain and the immune system in both mental and physical health, including depression. These models draw on research indicating that the cellular actors (particularly monocytes) and signaling molecules (particularly cytokines) that orchestrate inflammation in the periphery can directly modulate the structure and function of the brain. In the brain, inflammatory activity heightens sensitivity to threats in the cortico-amygdala circuit, lowers sensitivity to rewards in the cortico-striatal circuit, and alters executive control and emotion regulation in the prefrontal cortex. When dysregulated, and particularly under conditions of chronic stress, inflammation can generate feelings of dysphoria, distress, and anhedonia. This is proposed to initiate unhealthy, self-medicating behaviors (e.g. substance use, poor diet) to manage the dysphoria, which further heighten inflammation. Over time, dysregulation in these brain circuits and the inflammatory response may compound each other to form a positive feedback loop, whereby dysregulation in one organ system exacerbates the other. We and others suggest that this neuroimmune dysregulation is a dynamic joint vulnerability for depression, particularly during adolescence. We have three goals for the present paper. First, we extend neuroimmune network models of mental and physical health to generate a developmental framework of risk for the onset of depression during adolescence. Second, we examine how a neuroimmune network perspective can help explain the high rates of comorbidity between depression and other psychiatric disorders across development, and multimorbidity between depression and stress-related medical illnesses. Finally, we consider how identifying neuroimmune pathways to depression can facilitate a 'next generation' of behavioral and biological interventions that target neuroimmune signaling to treat, and ideally prevent, depression in youth and adolescents.

The Effect of Income and Wealth on Behavioral Strategies, Personality Traits, and Preferences

Individuals living in either harsh or favorable environments display well-documented psychological and behavioral differences. For example, people in favorable environments tend to be more future-oriented, trust strangers more, and have more explorative preferences. To account for such differences, psychologists have turned to evolutionary biology and behavioral ecology, in particular, the literature on life-history theory and pace-of-life syndrome. However, critics have found that the theoretical foundations of these approaches are fragile and that differences in life expectancy cannot explain vast psychological and behavioral differences. In this article, we build on the theory of optimal resource allocation to propose an alternative framework. We hypothesize that the quantity of resources available, such as income, has downstream consequences on psychological traits, leading to the emergence of behavioral syndromes. We show that more resources lead to more long-term orientation, more tolerance of variance, and more investment in low marginal-benefit needs. At the behavioral level, this translates, among others, into more large-scale cooperation, more investment in health, and more exploration. These individual-level differences in behavior, in turn, account for cultural phenomena such as puritanism, authoritarianism, and innovation.

Neighborhood selection by parent personality, depression, and coparent support: A two-study replication

This study addresses the degree to which three selection factors (parent personality, depression, and coparent support) drive movement into neighborhoods and predict changes in youth externalizing behavior. Two studies followed children from birth to age 15 (N = 1,364 for Study 1; N = 4,898 for Study 2). Neighborhood socioeconomic disadvantage, family income, and youth externalizing behavior were consistently and significantly correlated cross sectionally and longitudinally. Selection factors predicted changes in youth externalizing behavior. Higher family income, mother agreeableness, and perceived support from a coparent predicted movement over time into less disadvantaged neighborhoods. Lower levels of mother impulsivity, neuroticism, and depression also predicted movement over time into less disadvantaged neighborhoods. Neighborhood disadvantage did not predict change in youth externalizing behavior when any of the above selection factors were included in the model. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Casino-based cash transfers and fertility among the Eastern Band of Cherokee Indians in North Carolina: A time-series analysis

Fertility decline remains a key concern among high-income countries. Prior research indicates that income supplementation through unconditional cash transfers (UCT) may correspond with increased fertility. We examine whether a casino-based UCT, in the form of per capita (percap) payments to members of the Eastern Band of Cherokee Indians (EBCI) corresponds with an acute increase in fertility. We use North Carolina vital statistics datasets from 1990 to 2006 and apply time-series analysis methods to examine the relation between specific months of percap payments (exposure) and monthly number of conceptions that result in live births (outcome) among the EBCI. We control for autocorrelation and monthly counts of births (arrayed by conception cohorts) among white women (ineligible for UCT receipt) in the study region. Results indicate an increase in conceptions that result in live births at 1 and 3 months after percap receipt among EBCI women aged ≥20 years (exposure month lag 1 coefficient = 1.74, p = 0.03; exposure month lag 3 coefficient = 1.60, p = 0.04). Exploratory analyses indicate that the observed fertility increase concentrates among primiparae EBCI women. We do not find any association between percap payment timing and births to EBCI women aged <20 years.

Child mental health and income gradient from early childhood to adolescence: Evidence from the UK

Background

Children from low income families are likely to have poorer mental health than their more affluent peers. However, it is unclear how this association varies at different developmental stages and what the potential underpinning mechanisms are. This study investigates the relationship between family income and mental health problems from early childhood to adolescence in the UK, and examines the potential mediating role of family-related factors over time.

Methods

Data were drawn from the UK Millennium Cohort Study at ages 3, 5, 7, 11, 14 and 17 years. Child mental health was measured by the Strengths and Difficulties Questionnaire Total Difficulties Score, and the Internalising and Externalising subscales. Family income was operationalised as permanent income. Cross-sectional analyses were conducted at each age to examine the association between income and mental health problems, and to examine potential mechanisms based on the Parental Stress and Parental Investment theories.

Results

The samples included 8096 children aged up to 14 years, of which 5667 remained in the study at age 17. Results indicated a statistically significant association between lower family income and poorer mental health in all age groups after adjusting for confounding factors. The strength of the association was reduced after adjustment for Parental Stress and Parental Investment factors, with the larger attenuation driven by Parental Stress factors in most cases. Fully adjusted models suggested an increased independent association between maternal psychological distress and children's mental health as children grew older.

Conclusions

While lower family income is associated with a child's poorer mental health, much of this association is explained by other factors such as maternal psychological distress, and therefore the direct association is relatively small. This suggests that policies targeting income redistribution may reduce child mental health problems, and also benefit the wider family, reducing the prevalence of other associated risk factors.

Understanding the relationship between family income and conduct problems: findings from the mental health of children and young people survey

BACKGROUND

Children from low-socioeconomic backgrounds exhibit more behavioural difficulties than those from more affluent families. Influential theoretical models specify family stress and child characteristics as mediating this effect. These accounts, however, have often been based on cross-sectional data or longitudinal analyses that do not capture all potential pathways, and therefore may not provide good policy guidance.

METHODS

In a UK representative sample of 2399 children aged 5-15, we tested mediation of the effect of household income on parent and teacher reports of conduct problems (CP) via unhealthy family functioning, poor parental mental health, stressful life events, child physical health and reading ability. We applied cross-lagged longitudinal mediation models which allowed for testing of reciprocal effects whereby the hypothesised mediators were modelled as outcomes as well as predictors of CP.

RESULTS

We found the predicted significant longitudinal effect of income on CP, but no evidence that it was mediated by the child and family factors included in the study. Instead, we found significant indirect paths from income to parental mental health, child physical health and stressful life events that were transmitted via child CP.

CONCLUSION

The results confirm that income is associated with change in CP but do not support models that suggest this effect is transmitted via unhealthy family functioning, parental mental health, child physical health, stressful life events or reading difficulties. Instead, the results highlight that child CP may be a mediator of social inequalities in family psychosocial functioning.

The Intergenerational Transmission of Maladaptive Parenting and its Impact on Child Mental Health: Examining Cross-Cultural Mediating Pathways and Moderating Protective Factors

Using a sample of 1338 families from 12 cultural groups in 9 nations, we examined whether retrospectively remembered Generation 1 (G1) parent rejecting behaviors were passed to Generation 2 (G2 parents), whether such intergenerational transmission led to higher Generation 3 (G3 child) externalizing and internalizing behavior at age 13, and whether such intergenerational transmission could be interrupted by parent participation in parenting programs or family income increases of > 5%. Utilizing structural equation modeling, we found that the intergenerational transmission of parent rejection that is linked with higher child externalizing and internalizing problems occurs across cultural contexts. However, the magnitude of transmission is greater in cultures with higher normative levels of parent rejection. Parenting program participation broke this intergenerational cycle in fathers from cultures high in normative parent rejection. Income increases appear to break this intergenerational cycle in mothers from most cultures, regardless of normative levels of parent rejection. These results tentatively suggest that bolstering protective factors such as parenting program participation, income supplementation, and (in cultures high in normative parent rejection) legislative changes and other population-wide positive parenting information campaigns aimed at changing cultural parenting norms may be effective in breaking intergenerational cycles of maladaptive parenting and improving child mental health across multiple generations.

Child Poverty and Health: The Role of Income Support Policies

Policy Points Child poverty is associated with both short- and long-term health and well-being, and income support policies can be used to improve child health. This article reviews the types of income support policies used in the United States and the evidence of the effectiveness of these policies in improving child health, highlighting areas for future research and policy considerations specific to income support policies.

Lone parents' employment policy and adolescents' socioemotional development: Quasi-experimental evidence from a UK reform

Studies suggest that welfare-to-work programmes increase lone mother's employment, but their impact on child and adolescent socioemotional development is unclear. The lone parent obligation (LPO) reform introduced a requirement for lone mothers entitled to unconditional Income Support (IS) to seek paid work actively as a condition to receive benefits. We use data from the UK Millennium Cohort Study to examine the impact of work search requirements for lone parents on child and adolescent socioemotional development. We apply a difference-in-differences approach that exploits gradual changes from 2008 to 2017 in children's maximum eligibility age to receive IS and assess effects on child and adolescent Strengths and Difficulties Questionnaire (SDQ) scores. We find that the LPO reform led to a ten-percentage point increase in lone mothers' employment but no change in the risk of family poverty. The reform led to a small but statistically significant increase in adolescents' SDQ scores, which indicated worse mental health and was largely driven by increased emotional problems. It also led to an increase in mothers' distress and poor self-rated health, and mothers' reports that time spent with children was insufficient. Our findings highlight the need to consider trade-offs between employment gains and child and adolescent socioemotional development in assessing the net impact of welfare-to-work policies targeting lone parents.

The impact of agricultural disasters on child development in rural China

Background

China's uneven development under the urban-rural dichotomy has led to the discouraging development of children in rural areas. China is a large agricultural country and agricultural disasters are relatively common. Rural children aged 10-15 whose families depend on the agricultural economy may experience far-reaching negative effects from these disasters.

Objective

This study explored the effects of agricultural disasters on rural children's development, including cognitive and noncognitive skills, and academic pressure.

Methods

Survey data from the China Family Panel Survey and the National Meteorological Administration for 2010-2018 and a fixed-effect panel model with difference-in-differences regressions were used in the study.

Results

The fixed effects model results showed evidence that agricultural disasters have a negative impact on rural children's cognitive and noncognitive skills and a positive impact on academic pressure. The statistically significant coefficients are -0.092, -0.938, and 0.223, respectively. School and family environments also explain children's development. Robustness tests confirmed these results.

Conclusions

Evidence shows that agricultural disasters have a significant negative impact on rural child development. It may be inferred that these will increase the difficulty of narrowing the urban-rural development gap. China is committed to promoting prosperity for all its people. Special attention should be paid to the consequences of disasters at the child level and appropriate measures should be taken to mitigate possible negative impacts.

The Effect of Educational Expectations on Children's Cognition and Depression

Cognitive and psychological conditions in childhood will have an important impact on adult life. There is relatively little literature on the impact of educational expectations on children's cognition and psychological health from the perspective of urban and rural differences. Based on the cohort data of the CFPS from 2012 and 2016, this study screened a total of 994 children aged 10-15 to study the effects of parents' educational expectations and children's educational expectations on children's cognition and depression. The results show that both parents' educational expectations and children's educational expectations have a positive impact on children's cognition. Parents' educational expectations and children's educational expectations have negative effects on children's depression. When parents' educational expectations are greater than their children's educational expectations, educational expectations have a negative impact on children's cognition and a positive impact on children's depression. In both urban and rural samples, parents' educational expectations and children's educational expectations have a positive impact on children's cognition and a negative impact on children's depression. However, the impact of educational expectations on children's cognition and depression was greater in rural areas than in urban areas. When parents' educational expectations are greater than their children's educational expectations, educational expectations in urban areas have no effect on children's cognition.

Does Internet Entertainment Reduce the Cognitive Ability of Children? Evidence from the China Education Panel Survey

Internet technology has been assimilated into children’s educational system on an in-depth level. In particular, the number of children who use the internet for entertainment has been rapidly increasing. However, there has been a debate as to whether internet entertainment can have a detrimental impact on children’s cognitive ability. This paper investigates the effect of internet entertainment on the cognitive ability of children in the Chinese context. The results show no evidence of associations between internet entertainment and children’s cognitive ability. However, the additional analysis provides preliminary evidence suggesting that internet entertainment can be beneficial to children who use it for entertainment only on weekends but detrimental for those who spend leisure time online daily. In addition, the findings are robust in a variety of sensitivity tests. We also examine whether the effects of internet entertainment on children’s cognitive ability in different family environments are heterogeneous. The findings suggest that parents’ internet habits, parents’ internet supervision, parental relationship, family education and living area play a moderating role in the relationship between internet entertainment and children’s cognitive ability. This study offers useful insights into the current global debate on the nexus between internet entertainment and children’s cognitive ability and also provides suggestions for parents, children, regulators and policymakers.

Cooperation as a signal of time preferences

Many evolutionary models explain why we cooperate with non-kin, but few explain why cooperative behaviour and trust vary. Here, we introduce a model of cooperation as a signal of time preferences, which addresses this variability. At equilibrium in our model (i) future-oriented individuals are more motivated to cooperate, (ii) future-oriented populations have access to a wider range of cooperative opportunities, and (iii) spontaneous and inconspicuous cooperation reveal stronger preference for the future, and therefore inspire more trust. Our theory sheds light on the variability of cooperative behaviour and trust. Since affluence tends to align with time preferences, results (i) and (ii) explain why cooperation is often associated with affluence, in surveys and field studies. Time preferences also explain why we trust others based on proxies for impulsivity, and, following result (iii), why uncalculating, subtle and one-shot cooperators are deemed particularly trustworthy. Time preferences provide a powerful and parsimonious explanatory lens, through which we can better understand the variability of trust and cooperation.

The Impact Of Household Health Insurance Coverage Gains On Children's Achievement In Iowa: Evidence From The ACA

Low family income is associated with worse child academic achievement. Little is known about how health insurance expansions affect children's achievement in low-income households. This study examined the effects of the Affordable Care Act's coverage expansions primarily for Medicaid and Marketplace enrollment, beginning in 2014, on children's academic achievement in Iowa. The study employed a unique linkage of birth certificates and data on standardized school tests for children in Iowa and took advantage of differences in uninsurance rates across areas in the state before the ACA insurance expansions. There is evidence that the ACA expansions beginning in 2014 were associated with higher reading scores after three years for children born to mothers with a high school education or less. There is no consistent evidence of an effect on math scores. Overall, these findings suggest broad spillover benefits from health insurance expansions to the well-being and development of children in low-income households that should be part of the continuing policy debate surrounding state and national health insurance reforms.

The Long-Run Effects of Recessions on Education and Income

This paper examines the long-run effects of the 1980-1982 recession on education and income. Using confidential Census data, I estimate difference-in-differences regressions that exploit variation across counties in recession severity and across cohorts in age at the time of the recession. For individuals age 0-10 in 1979, a 10 percent decrease in earnings per capita in their county of birth reduces four-year college degree attainment by 15 percent and earnings in adulthood by 5 percent. Simple calculations suggest that, in aggregate, the 1980-1982 recession led to 1.3-2.8 million fewer college graduates and $66-$139 billion less earned income per year.

How personality affects reaction. A mental health behavioral insight review during the Pandemic

The fear caused by the Covid-19 pandemic is changing our psychology and behavior. This ongoing negative event, imposing restrictions such as home isolation and social distancing, can result in heightened anxiety, depression and a sense of loneliness, with immediate effects on mental health. This study investigates adolescents’ reaction to the pandemic, by analyzing the behavioral mental health trends of depression, anxiety and sense of loneliness, in relation to personality traits. After controlling for demographics and family background, our results reveal strong relationships between several personality traits and psychological health indicators, during the pandemic in Greece. A total of 419 secondary school students (aged 12–18) were administered the State-Trait Anxiety Inventory for Children (STAIC), the Child Depression Inventory (CDI), the Big Five Inventory for measuring personality (BFI) and the Children’s Loneliness Questionnaire (CLS) during two time periods within pandemic. Overall, it appears that depression increased significantly in line with the escalation of the pandemic, while anxiety decreased, with the strongest predictors being the personality variables of extraversion, neuroticism and openness. Surprisingly, the study also revealed that the level of extraversion has a positive effect on changes in anxiety, while a negative one on changes in depression. On the other hand, neuroticism and openness seem to negatively correlate with anxiety changes and positively with depression changes. These findings highlight the importance of considering these variables in addressing individuals’ mental health behavior during the Covid-19 pandemic and elucidate the literature by offering a deeper understanding of the strong relationship between personality, depression and anxiety.

The mental health effects of a Universal Basic Income: A synthesis of the evidence from previous pilots

INTRODUCTION

Amongst its advocates, one of the key arguments for a Universal Basic Income (UBI) is its potential to improve population mental health. However, while previous authors have variously examined the potential effects of UBI on income, employment and labour market demand, the direct mental health consequences of previous pilots have been less frequently examined. The purpose of this paper is therefore to conduct a review of the literature on UBI and to re-examine the existing research with a mental health focus.

METHODS

Six electronic databases were used to conduct a review of the literature. We searched for empirical research studies of any design, conducted since the year 2000 in High Income Countries, exploring the effects of interventions similar to a UBI on the mental health of children or working-age adults. Grey literature and government reports were also included.

RESULTS

A total of 1566 articles were screened of which seven peer reviewed studies and eight governmental reports were ultimately selected for inclusion. None of the identified studies directly compared the impact of individual payments with those made on a household basis, or the effects of payments which were truly universal. However, several studies evaluated the mental health outcomes associated with payments provided unconditionally, and consistently reported clear and significant improvements in mental wellbeing. Potential mediating factors included improved time with family and friends, a reduction in perceived stigma and a renewed sense of hope for the future.

CONCLUSIONS

Our review has produced evidence to suggest that prophesies surrounding the mental health benefits of a UBI are at least partially justified. However, future studies should aim to be conducted at an area level, with an adequately powered sample size, and investigate interventions of a considerable duration using a longitudinal design.

Getting On in Gotham: The Midtown Manhattan Study and Putting the "Social" in Psychiatry

In the spring of 1962, a series of alarming headlines greeted American newspaper readers. From "New York Living for Nuts Only" and "One in Five Here Mentally Fit" to "Scratch a New Yorker, and What Do You Find?" and "City Gets Mental Test, Results are Real Crazy," the stories highlighted the shocking and, to some, incredible statistics that fewer than one in five (18.5%) Manhattanites had good mental health. Approximately a quarter of them had such bad mental health that they were effectively incapacitated, often unable to work or function socially. The headlines were gleaned from Mental Health in the Metropolis (1962), the first major output of the Midtown Manhattan Study, a large-scale, interdisciplinary project that surveyed the mental health of 1660 white Upper East Side residents between the ages of 20 and 59. One of the most significant social psychiatry projects to emerge following the Second World War, the Midtown Manhattan Study endeavored to "test the general hypothesis that biosocial and sociocultural factors leave imprints on mental health which are discernible when viewed from the panoramic perspective provided by a large population." Despite initial media and academic interest, however, the Midtown Manhattan Study's findings were soon forgotten, as American psychiatry turned its focus to individual-rather than population-psychopathology, and turned to the brain-rather than the environment-for explanations. Relying on archival sources, contemporary medical and social scientific literature, and oral history interviews, this article explains why the Midtown Manhattan Study failed to become more influential, concluding that its emphasis on the role of social isolation and poverty in mental illness should be taken more seriously today.

What Factors in Nepal Account for the Rural–Urban Discrepancy in Human Capital? Evidence from Household Survey Data

We analyze the factors that determine human capital formation in the rural and urban sectors of Nepal and decompose the intersectoral difference into variables underlying supply and demand for human capital. In particular, we examine the role of access to primary and secondary schools as well as the socioeconomic, demographic, and geographic characteristics of households. Our results are based on Nepal Living Standards Survey data for 2004 and 2011. We find that access to schooling has a significant impact on the level of human capital, especially in rural areas. Our Blinder–Oaxaca decomposition attributes a large portion of the rural–urban gap to socioeconomic and demographic variables. Yet, the results reinforce our claim that an improvement in schooling access and road infrastructure is also necessary, particularly in the vast rural sector of Nepal, if human capital development is to provide a greater contribution to national welfare.

The role of the shared environment in college attainment: An adoption study

OBJECTIVE

College attainment is one of the few phenotypes to have substantial variance accounted for by environmental factors shared by reared-together relatives. The shared environment is implicated by the consistently strong parent-to-offspring transmission of college attainment. The mechanisms underlying this relationship remain unclear. We use genetically informative methods with a longitudinal, adoption sample to identify possible environmental mechanisms underlying parent-offspring college transmission.

METHOD

Data were drawn from the Sibling Interaction and Behavior Study (SIBS), which includes 409 adoptive and 208 nonadoptive families, consisting of two offspring followed from adolescence into young adulthood and their rearing parents. Four domains of environmental mechanisms were examined: (a) skill enhancement; (b) academic support; (c) material advantage; and (d) supportive family environment.

RESULTS

Both shared environmental and genetic factors contributed to the parent-offspring transmission of college attainment. However, highly educated parents did not appear to be increasing their adopted offspring's attainment through skill development. The environmental factors that were associated with increased odds of offspring college attainment were mother's academic expectations and family income.

CONCLUSIONS

While complete mediation of the parent-offspring transmission of college attainment was not identified, the results shed light on some of the mechanisms associated with the common environment variance in the college attainment phenotype.

A step back from the edge: empirical modeling of the role of social integration on suicide and associated deleterious health outcomes across adolescents from six middle-income countries

PURPOSE

There is economic importance to stimulating awareness about preventing adolescent suicide and other associated deleterious mental and behavioral health outcomes, especially the long-term costs from lost productivity. However, the presence of stigma and poor healthcare reporting systems which often prevent data access have frequently limited research into these topics in low-and-middle income (LMICs) countries. The majority of existing research on these topics using LMICs data primarily focuses on prevalence rates and basic correlational associations, and is often a-theoretic. Empirically rigorous work, mostly found using data from the developed world, has primarily relegated suicide into a box of utility-maximization-based decisions. Social integration theory may be a more relevant approach for researching the mitigating factors to deleterious heath behaviors among adolescents in LMICs.

METHODS

Using data from the Global School-based Student Health Survey (GSHS) of six different countries, we estimate a reduced-form, simultaneous model incorporating specialized clustering to determine the influence of social integration on five different deleterious health outcomes, including three levels of suicidal behavior.

RESULTS

Robust results indicate that positive parenting and social exclusion reduce and increase the likelihood of all outcomes, respectively, among both pooled and individual country samples.

CONCLUSION

Such results provide an impetus for pursuing interventions in LMICs, which focus on social-based, multi-level approaches. Such interventions could include such elements as peer-to-peer training support and awareness/promotion of mental health among parents of adolescents.

Childhood environmental adversity is not linked to lower levels of cooperative behaviour in economic games

Cooperation is a universal phenomenon, it is present in all human cultures from hunter-gatherers to industrialised societies, and it constitutes a fundamental aspect of social relationships. There is, however, variability in the amount of resources people invest in cooperative activities. Recent findings indicate that this variability may be partly explained as a contextually appropriate response to environmental conditions. Specifically, adverse environments seem to be associated with less cooperation and recent findings suggest that this effect is partly mediated by differences in individuals' life-history strategy. In this paper, we set out to replicate and extend these findings by measuring actual cooperative behaviour in three economic games - a Dictator game, a Trust game and a Public Goods game - on a nationally representative sample of 612 people. Although we found that the cooperation and life-history strategy latent variables were adequately captured by the models, the hypothesised relationship between childhood environmental adversity and adult cooperation and the mediation effect by life-history strategy were not found.

Maternity leave and children's health outcomes in the long-term

This paper assesses the impact of the length of maternity leave on children's health outcomes in the long-run. My quasi-experimental design evaluates an expansion in maternity leave coverage from two to six months, which occurred in the Federal Republic of Germany in 1979. The expansion came into effect after a sharp cutoff date and significantly increased the time working mothers stayed at home with their newborns during the first six months after childbirth. Using this cutoff date as a source of exogenous variation, I exploit German hospital registry data, which contains detailed information on the universe of inpatients' diagnoses from 1995-2014. By tracking the health of treated and control children from age 16 up to age 35, this study provides new insights into the trajectory of health differentials over the life-cycle. I find that the legislative change generated positive long-term health effects: My intention-to-treat estimates show that children born after the implementation of the reform experience fewer hospital admissions and are less likely to be diagnosed with mental and behavioral disorders.

Childhood circumstances and young adulthood outcomes: The role of mothers' financial problems

We here consider the cognitive and noncognitive consequences on young adults of growing up with a mother who reported experiencing major financial problems. We use UK data from the Avon Longitudinal Study of Parents and Children to show that early childhood financial problems are associated with worse adolescent cognitive and noncognitive outcomes, controlling for both income and a set of standard variables, and in value-added models controlling for children's earlier age-5 outcomes. The estimated effect of financial problems is almost always larger in size than that of income. Around one-quarter to one-half of the effect of financial problems on the noncognitive outcomes seems to transit through mother's mental health.

Examining the ethical underpinnings of universal basic income as a public health policy: prophylaxis, social engineering and 'good' lives

At a time of COVID-19 pandemic, universal basic income (UBI) has been presented as a potential public health 'upstream intervention'. Research indicates a possible impact on health by reducing poverty, fostering health-promoting behaviour and ameliorating biopsychosocial pathways to health. This novel case for UBI as a public health measure is starting to receive attention from a range of political positions and organisations. However, discussion of the ethical underpinnings of UBI as a public health policy is sparse. This is depriving policymakers of clear perspectives about the reasons for, restrictions to and potential for the policy's design and implementation. In this article, we note prospective pathways to impact on health in order to assess fit with Rawlsian, capabilities and perfectionist approaches to public health policy. We suggest that Raz' pluralist perfectionist approach may fit most comfortably with the prospective pathways to impact, which has implications for allocation of resources.

Designing trials of Universal Basic Income for health impact: identifying interdisciplinary questions to address

BACKGROUND

A large body of evidence indicates the importance of upstream determinants to health. Universal Basic Income (UBI) has been suggested as an upstream intervention capable of promoting health by affecting material, biopsychosocial and behavioural determinants. Calls are emerging across the political spectrum to introduce an emergency UBI to address socioeconomic insecurity. However, although existing studies indicate effects on health through cash transfers, UBI schemes have not previously been designed specifically to promote health.

METHODS

In this article, we scope the existing literature to set out a set of interdisciplinary research challenges to address in designing a trial of the effectiveness of UBI as a population health measure.

RESULTS

We present a theoretical model of impact that identifies three pathways to health impact, before identifying open questions related to regularity, size of payment, needs-based supplements, personality and behaviour, conditionality and duration.

CONCLUSIONS

These results set, for the first time, a set of research activities required in order to maximize health impact in UBI programmes.

Mechanisms linking parental educational attainment with child ADHD, depression, and academic problems: a study of extended families in The Norwegian Mother, Father and Child Cohort Study

BACKGROUND

Low educational attainment in parents is associated with child psychopathology. It is not clear whether the associations are due to risk factors that family members share or due to effects of maternal or paternal education on the offspring. We investigate whether associations between maternal and paternal educational attainment and child symptoms of attention deficit/hyperactivity disorder (ADHD), depression, and academic problems are due to shared genetic factors, shared family environmental factors, or effects of the parental phenotype educational attainment itself.

METHODS

This study is based on the Norwegian Mother, Father and Child Cohort Study (MoBa). The sample comprised 34,958 children (17,128 girls) in 28,372 extended-family units. We used data from related nuclear families linked by siblings in the parent generation. We applied a quasi-experimental extended children-of-twins design that included siblings in both generations and took account of nonrandom mating by including partners. Educational attainment was self-reported by mothers and fathers. Mothers reported children's symptoms of ADHD, symptoms of depression, and academic problems by questionnaire when the children were 8 years old.

RESULTS

Children of lowly educated parents scored higher on all outcomes and had an approximate doubling of the risk of high symptom levels. The association between maternal and paternal educational attainment and child symptoms of ADHD and academic problems persisted after controlling for shared genetic and family environmental factors. Phenotypic transmission to depression was weaker and in the best fitting model fully explained by genetic factors shared by the two generations.

CONCLUSIONS

Associations between educational attainment of mothers and fathers and child symptoms of ADHD and academic problems could not be ascribed to shared familial risk factors, whereas associations with symptoms of depression could. Parental education or resources and behaviors resulting from low education might be targets of interventions aimed at reducing symptoms of ADHD and academic problems.

Environmental adversity is associated with lower investment in collective actions

Environmental adversity is associated with a wide range of biological outcomes and behaviors that seem to fulfill a need to favor immediate over long-term benefits. Adversity is also associated with decreased investment in cooperation, which is defined as a long-term strategy. Beyond establishing the correlation between adversity and cooperation, the channel through which this relationship arises remains unclear. We propose that this relationship is mediated by a present bias at the psychological level, which is embodied in the reproduction-maintenance trade-off at the biological level. We report two pre-registered studies applying structural equation models to test this relationship on large-scale datasets (the European Values Study and the World Values Survey). The present study replicates existing research linking adverse environments (both in childhood and in adulthood) with decreased investment in adult cooperation and finds that this association is indeed mediated by variations in individuals’ reproduction-maintenance trade-off.

Trends in Socioeconomic Inequalities in Norwegian Adolescents' Mental Health From 2014 to 2018: A Repeated Cross-Sectional Study

Background

Adolescents’ mental health, and its consistent relationship with their socioeconomic background, is a concern that should drive education, health, and employment policies. However, information about this relationship on a national scale is limited. We explore national overall trends and investigate possible socioeconomic disparities in adolescents’ mental health, including psychological distress and symptoms of depression, anxiety, and loneliness in Norway during the period 2014–2018.

Methods

The present study builds on data retrieved from five waves of the national cross-sectional Ungdata survey (2014–2018). In total 136,525 upper secondary school students (52% girls) completed the questionnaire during the study period. Trends in socioeconomic inequalities were assessed using the Slope Index of Inequality (SII) and the Relative Index of Inequality (RII).

Results

The prevalence of students with moderate to high symptoms score and mean symptoms scores of psychological distress (in terms of symptoms of depression, anxiety, and loneliness) increased among girls and boys during 2014–2018, with girls showing higher rates. Our results suggest distinct, but stable, inequalities between socioeconomic groups, both in absolute and relative terms, among girls and boys during the study period.

Conclusion

Rising rates of adolescents’ psychological distress, particularly among girls, may have long-term consequences for individuals involved and the society as a whole. Future studies should investigate the causes of these results. We did not find evidence of any change in inequalities in adolescents’ mental health between socioeconomic groups, suggesting current strategies are not sufficiently addressing mental health inequalities in the adolescent population and therefore a significant need for research and public health efforts.

Longitudinal Experience–Wide Association Studies—A Framework for Studying Personality Change

The importance of personality for predicting life outcomes in the domains of love, work, and health is well established, as is evidence that personality traits, while relatively stable, can change. However, little is known about the sources and processes that drive changes in personality traits and how such changes might impact important life outcomes. In this paper, we make the case that the research paradigms and methodological approaches commonly used in personality psychology need to be revised to advance our understanding of the sources and processes of personality change. We propose Longitudinal Experience–Wide Association Studies as a framework for studying personality change that can address the limitations of current methods, and we discuss strategies for overcoming some of the challenges associated with Longitudinal Experience–Wide Association Studies. © 2020 European Association of Personality Psychology

Income dividends and subjective survival in a Cherokee Indian cohort: a quasi-experiment

Persons with high temporal discounting tend to value immediate gratification over future gains. Low self-reported lifespan (SRL)-an individual's assessment of a relatively short future lifespan-concentrates in low-income populations and may reflect high temporal discounting. We use casino-based cash dividends among the Eastern Band of Cherokee Indians (EBCI) as a quasi-experiment to test whether large income gains among EBCI members translate into increased SRL. We used SRL data for EBCI and White youth, aged 19 to 28, participating in two waves of the Life Time Trajectory of Youth (LTI-Y) survey from 2000 to 2010. We controlled for unobserved confounding across individuals, time, and region through a longitudinal design using a difference-in-difference analytic approach (N = 294). We conducted all analyses separately by gender and by quartile of socioeconomic status. Cash dividends correspond with a 15.23 year increase in SRL among EBCI men below the lowest socio-economic quartile at baseline relative to Whites (standard error = 5.39, p < .01). Results using other socio-economic cut-points support improved SRL among EBCI men (but not women). The large magnitude of this result among EBCI men indicates that a non-trivial cash dividend to a low-income population may confer long-term benefits on perceptions of future lifespan and, in turn, reduce temporal discounting.Abbreviations: EBCI: Eastern Band of Cherokee Indians; SES: Socioeconomic Status; LTI-Y: Life Trajectory Interview for Youth; GSMS: Great Smoky Mountains Study; SRL: Self-Reported Lifespan; SSS: Subjective Social Status.

The public health effects of interventions similar to basic income: a scoping review

Universal, unconditional basic income is attracting increasing policy and academic interest. Income is a key health determinant, and a basic income could affect health through its effect on other determinants, such as employment. However, there is little evidence of its potential effects on public health, because no studies of interventions which meet the definition of basic income have been done. However, there is evidence from studies of interventions with similarities to basic income. Therefore, we aimed to identify these studies and to consider what can be learned from them about the potential effects of such interventions on health and socioeconomic outcomes. We did a systematic scoping review of basic income-like interventions, searching eight bibliographic and eight specialist databases from inception to July, 2019, with extensive hand searching. We included publications in English of quantitative and qualitative studies done in upper-middle-income or high-income countries, of universal, permanent, or subsistence-level interventions providing unconditional payments to individuals or families. We sought to identify the range of outcomes reported by relevant studies, and report health, education, employment, and social outcomes. We extracted and tabulated relevant data and narratively reported effects by intervention and outcome. We identified 27 studies of nine heterogeneous interventions, some universal and permanent, and many evaluated using randomised controlled trials or robust quasi-experimental methods. Evidence on health effects was mixed, with strong positive effects on some outcomes, such as birthweight and mental health, but no effect on others. Employment effects were inconsistent, although mostly small for men and larger for women with young children. There was evidence of spill-over effects in studies measuring effects on large populations. In conclusion, little evidence exists of large reductions in employment, and some evidence suggests positive effects on some other outcomes, including health outcomes. Evidence for macro-level effects is scarce. Quasi-experimental and dynamic modelling approaches are well placed to investigate such effects.

Psychological origins of the Industrial Revolution

Since the Industrial Revolution, human societies have experienced high and sustained rates of economic growth. Recent explanations of this sudden and massive change in economic history have held that modern growth results from an acceleration of innovation. But it is unclear why the rate of innovation drastically accelerated in England in the eighteenth century. An important factor might be the alteration of individual preferences with regard to innovation resulting from the unprecedented living standards of the English during that period, for two reasons. First, recent developments in economic history challenge the standard Malthusian view according to which living standards were stagnant until the Industrial Revolution. Pre-industrial England enjoyed a level of affluence that was unprecedented in history. Second, behavioral sciences have demonstrated that the human brain is designed to respond adaptively to variations in resources in the local environment. In particular, Life History Theory, a branch of evolutionary biology, suggests that a more favorable environment (high resources, low mortality) should trigger the expression of future-oriented preferences. In this paper, I argue that some of these psychological traits - a lower level of time discounting, a higher level of optimism, decreased materialistic orientation, and a higher level of trust in others - are likely to increase the rate of innovation. I review the evidence regarding the impact of affluence on preferences in contemporary as well as past populations, and conclude that the impact of affluence on neurocognitive systems may partly explain the modern acceleration of technological innovations and the associated economic growth.

Family income, maternal psychological distress and child socio-emotional behaviour: Longitudinal findings from the UK Millennium Cohort Study

The association between low family income and socio-emotional behaviour problems in early childhood has been well-documented, and maternal psychological distress is highlighted as central in mediating this relationship. However, whether this relationship holds for older children, and the precise mechanisms by which income may influence child behaviour is unclear. This study investigated the relationship between family income and child socio-emotional behaviour at 11 years of age, and examined the mediating role of maternal psychological distress over time using the UK Millennium Cohort Study. The primary outcome was parent-reported behavioural problems, as captured by the Total Difficulties Score (TDS), derived from the Strengths and Difficulties Questionnaire (SDQ). Secondary outcomes were the emotional, peer-related, conduct, and hyperactivity/inattention problems subscales of the SDQ; and teacher-reported TDS. Permanent family income was the primary exposure variable; frequency of poverty up to age 11 years was the secondary exposure variable. Maternal psychological distress was operationalised to reflect the trajectory from child birth to age 11. Multivariable logistic regression models were used to estimate the effect of permanent family income on child behaviour at age 11, controlling for maternal psychological distress and other relevant covariates. Results showed a statistically significant protective effect of increased permanent family income on the likelihood of behavioural problems at age 11. This finding was consistent for all SDQ subscales apart from emotional problems, and was strongest for teacher-reported behavioural problems. Maternal distress was an important mediator in the income-child behaviour relationship for parent-reported, but not teacher-reported, behavioural problems. The results of this study strengthen empirical evidence that the child behaviour-income gradient is maintained in older childhood. Mother's psychological distress, particularly longstanding or recurrent, appears to contribute to this relationship. These findings may validate calls for psychosocial and financial supports for families affected by parental mental health issues.

How Does Household Income Affect Child Personality Traits and Behaviors?

We examine the effects of a quasi-experimental unconditional household income transfer on child emotional and behavioral health and personality traits. Using longitudinal data, we find that there are large beneficial effects on children's emotional and behavioral health and personality traits during adolescence. We find evidence that these effects are most pronounced for children who start out with the lowest initial endowments. The income intervention also results in improvements in parental relationships which we interpret as a potential mechanism behind our findings.

What Skills Can Buy: Transmission of advantage through cognitive and noncognitive skills

Parental income and wealth contribute to children's success but are at least partly endogenous to parents' cognitive and noncognitive skills. We estimate the degree to which mothers' skills measured in early adulthood confound the relationship between their economic resources and their children's postsecondary education outcomes. Analyses of NLSY79 suggest that maternal cognitive and noncognitive skills attenuate half of parental income's association with child baccalaureate college attendance, a fifth of its association with elite college attendance, and a quarter of its association with bachelor's degree completion. Maternal skills likewise attenuate a third of parental wealth's association with children's baccalaureate college attendance, half of its association with elite college attendance, and a fifth of its association with bachelor's degree completion. Observational studies of the relationship between parents' economic resources and children's postsecondary attainments that fail to account for parental skills risk seriously overstating the benefits of parental income and wealth.

Moving Beyond Correlations in Assessing the Consequences of Poverty

In the United States, does growing up in a poor household cause negative developmental outcomes for children? Hundreds of studies have documented statistical associations between family income in childhood and a host of outcomes in childhood, adolescence, and adulthood. Many of these studies have used correlational evidence to draw policy conclusions regarding the benefits of added family income for children, in particular children in families with incomes below the poverty line. Are these conclusions warranted? After a review of possible mechanisms linking poverty to negative childhood outcomes, we summarize the evidence for income's effects on children, paying particular attention to the strength of the evidence and the timing of economic deprivation. We demonstrate that, in contrast to the nearly universal associations between poverty and children's outcomes in the correlational literature, impacts estimated from social experiments and quasi-experiments are more selective. In particular, these stronger studies have linked increases in family income to increased school achievement in middle childhood and to greater educational attainment in adolescence and early adulthood. There is no experimental or quasi-experimental evidence in the United States that links child outcomes to economic deprivation in the first several years of life. Understanding the nature of socioeconomic influences, as well as their potential use in evidence-based policy recommendations, requires greater attention to identifying causal effects.

Sensory and cognitive plasticity: implications for academic interventions

Research in neuroscience has great potential for transforming education. However, the brain systems that support academic and cognitive skills are poorly understood in comparison to the systems that support sensory processing. Decades of basic research have examined the role that brain plasticity plays in the genesis and treatment of developmental visual disorders, which may help to inform how cognitive training approaches can be tailored for students who experience environmental disadvantage. In this review, we draw parallels between visual and cognitive intervention approaches, and suggest research avenues that could inform educational practice in the future.