Parental Investment Research Articles

The Difference of Parental Investment Model Between Multi-child Family and One-child Family

This study compared the parental investment patterns of multi-child families and single-child families. Through comparative analysis of the two family types, it is found that they have some differences in parental investment behavior. The results show that families with many children pay more attention to the cultivation of parent-child relationship, while families with only one child pay more attention to the cultivation of individual ability and independence. The research also found that the two kinds of families have differences in education investment, time investment and emotional investment, and different family types have their own characteristics and advantages in parental investment. These findings have important implications for understanding the differences in parental investment between different family types.

How Does Poverty Affect Primary School Achievement in Bangladeshi Children?The Mediating Role of Parental Investment and Parenting Practice

ABSTRACT The study examined whether monetary investment and parenting practices mediate the association between family and hardship and primary school achievement in a sample of Bangladeshi children (N = 1140; M age = 9.11, SD = .88 at baseline). The questionnaire method was used for data collection. The results from structural equation modeling suggested that although all factors partially mediated a predictor–outcome link, parenting practices explained a greater amount of variance in the associations with children’s poor achievement as compared with monetary investment after accounting for background factors. We discuss future directions for social policy and research.

Single Parent Efforts in Meeting Family Economic Needs in Bubu Village, Kambowa District, North Buton Regency

The purpose of the study is to find out how the efforts of single parents in fulfilling the exit economy of a single parent in Bubu Village, and to find out what are the supporting and inhibiting factors in an effort to meet the economic needs of the family in Bubu Village, Kambowa District, North Buton Regency. This type of research uses a qualitative approach with a problem study method to 8 single parents in Bubu Village.The data collection technique uses interview, observation, and documentation methods. Data analysis uses approaches, namely: data collection, data reduction, data presentation, and conclusion drawn. The results of this study show the efforts of single parents in meeting the economic needs of families in Bubu Village/sub-district, Kambowa District, North Buton, namely 1. Work, 2. Expecting help from family, 3. Expect help from the government. The supporting factors for single parent efforts to meet the economic needs of the family are, 1. Motivation and encouragement from the family. The factors that hinder single parent efforts in meeting the economic needs of the family are, 1. Limited skills, 2. Limited infrastructure, 3. There is no help from the husband in meeting the needs of the family

The female red jungle fowl (Gallus gallus gallus) reproductive investment stimulated by male attractiveness

Abstract. Lelono A, Riedstra B, Groothuis T. 2024. The female red jungle fowl (Gallus gallus gallus) reproductive investment stimulated by male attractiveness. Biodiversitas 25: 2931-2936. To maximize their capacity for reproduction, mothers are expected to modify their investment in offspring based on the quality of their mates. A recent study showed that females in female-care only species do so by investing more in egg mass when mated with attractive males rather than in other reproductive traits. In our study, we investigated how red jungle fowl (Gallus gallus gallus) mothers invest in clutch production based on the size of the male's comb, a trait signaling attractiveness. We randomly paired 14 females with 14 males of either large or small combs and monitored their egg laying, clutch completion, and brood rearing. Following the initial clutch, we exchanged male partners and permitted females to establish up second generation. We found that females who were partnered with males who had bigger combs laid down their eggs earlier after pairing compared to those paired with males with smaller combs. However, there were no variations in egg mass or clutch size that we could find. Furthermore, the size of the male's comb influenced the growth and body condition of female chicks, with those sired by males with larger combs being heavier and in better condition at twenty-four weeks old. These data support the premise of the positive Differential Allocation (DA) hypothesis, where maternal investment varies with mate quality, rather than the negative DA, where females more investment in offspring from lower quality mates.

Exposure to parental problem drinking during adolescence and symptoms of depression and anxiety in young adulthood: A Swedish national cohort study.

Previous research has shown associations between parental problem drinking and adverse mental health outcomes in children. However, while many studies assess parental alcohol problems based on clinical measures, longitudinal studies that investigate the impact of potentially less severe levels of parental alcohol problems are scarce. The aim of this study was to examine if the existence and severity of child-reported parental problem drinking in adolescence is associated with symptoms of depression and anxiety in young adult men and women. Data was obtained from the Swedish national cohort study Futura01, including 3143 participants born in 2001 who were surveyed in 2017 (age 15-16) and 2022 (age 20-21). Parental problem drinking was measured at age 15-16 with the short version of The Children of Alcoholics Screening Test. Depression and anxiety symptoms were measured at age 20-21 with the Patient Health Questionnaire-4. Registry information on gender, parental education and parental country of birth were included as covariates. The results demonstrated an exposure-response pattern, with greater severity of parental problem drinking associated with an increased probability of reporting depression and anxiety symptoms 5 years later. The association between parental problem drinking and subsequent depression symptoms was however present only in females. Adolescents exposed to parental problem drinking have elevated risks of long-term adverse mental health. These risks increase with greater severity of parental problem drinking. It is thus crucial with efforts preventing parental problem drinking and efforts promoting health among children and adolescents who are exposed.

Tri-axial accelerometry allows to determine parental food provisioning behaviour in a marine bird

The study of parental food provisioning is essential for understanding the breeding ecology of birds. We conducted the first study using accelerometry to detect food provisioning in birds, using Support Vector Machine (SVM) models to identify when adults feed chicks of three different age classes. Accelerometers were attached to the head of adult female Imperial Shags (Leucocarbo atriceps), and various attributes derived from the acceleration signals were used to train SVM models for each chick age class. Model performance improved with chick age class, with SVM models achieving high overall accuracy (>88%) and highest sensitivity in older chick categories (>91%). However, precision values, especially for younger chicks, remained relatively low (between 26% and 45%). The application of a time filter based on the minimum duration of the observed food provisioning behaviours for each chick age category, improved model performance by reducing false provisioning behaviours, particularly in the model for older chicks, which showed the highest precision (72.4%). This study highlights the effectiveness of accelerometry and machine learning in studying parental food provisioning in birds, providing a rapid and accurate data collection method to complement traditional techniques. The described methodology can be applied to any bird species that exhibits distinctive movements while feeding its offspring and has suitable characteristics for attaching an accelerometer to the body part that best captures this movement. Finally, it is hoped that the results of this study will contribute to future research on key questions in parental investment theory and reproductive strategies in birds.

How families matter for understanding economic inequality

Abstract In this commentary, we discuss the importance of families for understanding economic inequality. Family structure can in principle be an amplifier or mitigator of economic inequality. We describe three channels on how families shape economic inequality. First, how people match to form families matters for inequality across families. Second, parental investments in children can amplify existing inequalities across generations. Third, inequality can exist even within families and the economic environment can shape inequality in consumption and leisure between spouses. In this survey, we describe these channels and discuss the related literature.

Novel Mito-Nuclear Combinations Facilitate the Global Invasion of a Major Agricultural Crop Pest.

A fundamental understanding of the underlying mechanisms involved in biological invasions is crucial to developing effective risk assessment and control measures against invasive species. The fall armyworm (FAW), Spodoptera frugiperda, is a highly invasive pest that has rapidly spread from its native Americas into much of the Eastern Hemisphere, with a highly homogeneous nuclear genetic background. However, the exact mechanism behind its rapid introduction and propagation remains unclear. Here, a systematic investigation is conducted into the population dynamics of FAW in China from 2019 to 2021 and found that FAW individuals carrying "rice" mitochondria (FAW-mR) are more prevalent (>98%) than that with "corn" mitochondria (FAW-mC) at the initial stage of the invasion and in newly-occupied non-overwintering areas. Further fitness experiments show that the two hybrid-strains of FAW exhibit different adaptions in the new environment in China, and this may have been facilitated by amino acid changes in mitochondrial-encoded proteins. FAW-mR used increases energy metabolism, faster wing-beat frequencies, and lower wing loadings to drive greater flight performance and subsequent rapid colonization of new habitats. In contrast, FAW-mC individuals adapt with more relaxed mitochondria and shuttle energetics into maternal investment, observed as faster development rate and higher fecundity. The presence of two different mitochondria types within FAW has the potential to significantly expand the range of damage and enhance competitive advantage. Overall, the study describes a novel invasion mechanism displayed by the FAW population that facilitates its expansion and establishment in new environments.

Who is allowed to stay at home during school hours? An analysis of school withdrawal

ABSTRACT The rise of unexcused school absenteeism is an international phenomenon, and pupils with unexcused absenteeism are a highly heterogeneous group. Our study focuses on this heterogeneity by studying school withdrawal: absences not concealed from the parents, and which are attributable to there being little or no parental effort to get the pupil to school (passive school withdrawal) or to parental effort to keep the pupil at home (active school withdrawal). Our study of 644 pupils aged between 14 and 21 shows that both forms of school withdrawal are more prevalent among pupils with lower parental school involvement. Passive school withdrawal is more common among pupils from a single-parent family, and our findings also suggest that it occurs more often if the parents have a laissez-faire parenting style. Active school withdrawal is more prevalent amongst girls and students from a non-migrant background. In the conclusion, we elaborate on the implications of our findings for theory and practice.

“As Long as There’s a Glimmer of Hope, I’m Willing to Try”: The Moral Experiences of Parental Pursuit for Autism Therapy in Urban China

ABSTRACT In today’s China, countless parents embark on a journey of moral peril in search of treatment for their children with autism, navigating a bustling yet chaotic market of therapies. Based on 13 months of fieldwork in the Pearl River Delta, this study examines how the boom of China’s autism therapy industry has plunged parents, who are relentlessly striving for their children’s futures, into deeper vulnerability. I view the “ethics of trying” as parental enactment of their moral agency in seeking therapy and reveal how it serves as a moral engine for the industry’s growth in the early 21st century, as well as how it leads to moral tragedies for parents as new norms of therapeutic choice emerge with government and professional guidance compelling them to make optimal therapeutic choices within a critical developmental window. Although parental efforts to avoid “agent-regret” can paradoxically lead to significant remorse, the moral tragedy they encounter can also prompt reflection and reevaluation of their approach to their child’s condition.

Examining Parental Investment Dynamics in Twin Families: Insights From a Triadic Experimental Task [Conference Presentation Abstract

Examining Parental Investment Dynamics in Twin Families: Insights From a Triadic Experimental Task [Conference Presentation Abstract

Adolescents’ Online Risks and Parental Mediation in Nigerian Families: Gender in Focus

This study investigates the gender perspectives of adolescents’ online risk-taking and parental mediation in Nigerian families. Because the “the-one size fits all” relating to effective mediation of adolescents’ digital media may not apply to adolescent boys and girls in the same way. Accounting for gender differences in digital media use that lead to risky behavioral outcomes will enhance parents’ efforts in interceding their online media activities. The population for this study includes parents and students in public secondary schools in Lagos, Nigeria. The sample size for this study was 1,050 parents and their children. The questionnaire was the data collection instrument to obtain information about adolescent online media activities and parental mediation practices. The study’s findings show that girls engage in chatting with strangers and social networking more than boys, and boys engage in online gambling, online gaming and pornographic content more than girls. The findings also show that the risky online behavior of adolescent girls correlates with increased time spent on online media activities. Interventions targeted at female adolescents relating to digital media use, online media activities and risky online behavior will enhance parental efforts in interceding in their risky behaviors.

Intersexual patterns of the digestive tract and body size are opposed in a large bird

The appropriate structure of the digestive tract is crucial for individual adaptation to ecological conditions. In birds, the length of the small intestine, responsible for food absorption, is generally believed to be positively correlated with body size. In this study, we investigated the variation in small intestine length in the White Stork (Ciconia ciconia), a monomorphic species without visible sexual dimorphism, but characterized by differing parental efforts, which can be reflected by the small intestine lengths between the sexes. We examined the relationship between small intestine length and body size within the sexes. Our findings show that male White Storks have significantly shorter small intestines than females, despite having larger body sizes than the latter. Furthermore, we found a significant relationship between body size and small intestine length, but it was of a different nature in the two sexes. Males exhibited a previously unreported phenomenon, whereby increasing body size was associated with shortening small intestines, whereas females exhibited the opposite pattern. These novel findings shed light on the anatomical adaptations of the digestive tract in birds.

Autonomy-supportive parenting as a moderator of associations between ethnic and racial identity processes and psychological adjustment during college.

The purpose of this study was to test the roles of ethnic and racial identity (ERI) processes and autonomy-supportive parenting on college students' psychological adjustment. American college students of color (N = 505) completed questionnaires assessing ERI exploration and commitment, autonomy-supportive parenting, and psychological adjustment (self-esteem, depressive symptoms). Key variables were operationalized as latent constructs, and main and interaction effects were tested using the latent moderated structural equation modeling approach. Higher levels of ERI commitment (but not exploration) and parental autonomy support each uniquely predicted higher levels of self-esteem and lower levels of depressive symptoms. Parental autonomy support moderated associations between ERI processes and psychological adjustment, and the nature of moderation did not differ across Black and Latino/a/x students. Supporting the psychological adjustment of college students of color necessitates acknowledging the importance of both parental and institutional efforts to encourage students' autonomy strivings and ERI processes. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Maternal Investments in Children: The Role of Expected Effort and Returns

Abstract We investigate the importance of subjective expectations of returns to and effort costs of the two principal investments that mothers make in newborns: breastfeeding and stimulation. We find heterogeneity across mothers in rural Pakistan in expected effort costs and expected returns for outcomes in the cognitive, socio-emotional and health domains, and that this contributes to explaining heterogeneity in investments. We find no significant differences across women in preferences for child developmental outcomes. We simulate the impact of alternative policies on investments. Our findings highlight the relevance of interventions designed to address maternal depression and reduce perinatal fatigue alongside interventions that increase perceived returns to investments.

Parenting in a changing environment: A long-term study of prolactin, parental effort and reproductive success in common eiders

Parental care is regulated by multiple endocrine mechanisms. Among these hormones, prolactin (PRL) is involved in the expression of parental behaviors. Despite the consensus that PRL mediates variation in parental effort with age and body condition, its role in the adjustment of parental effort to fluctuating environmental conditions, including changing predation pressure, still awaits further investigation. To shed light on this knowledge gap, we relied on a long-term monitoring of female common eiders Somateria mollissima (n = 1277 breeding attempts, 2012–2022) incubating under fluctuating predation risk to investigate the link between baseline PRL levels and female minimum age, body condition, clutch size, environmental parameters (predation pressure, climate, nest microhabitat) and hatching success. We predicted that PRL would be higher in older females, those in better condition or incubating larger clutches. We also predicted that females would reduce parental effort when nesting under challenging environmental conditions (high predation pressure or poor climatic conditions), translated into reduced baseline PRL levels. We also explored how variation in PRL levels, female characteristics and environmental parameters were related to hatching success. Following our predictions, PRL levels were positively associated with body condition and female age (before showing a senescent decline in the oldest breeders). However, we did not observe any population-level or individual-level reduction in PRL levels in response to increasing predation pressure. Population-level baseline PRL levels instead increased over the study period, coincident with rising predation threat, but also increasing female body condition and age. While we did not provide evidence for a direct association between baseline PRL levels and predation risk, our results support the idea that elevated baseline PRL levels promote hatching success under internal constraints (in young, inexperienced, breeders or those incubating a large clutch) or constraining environmental conditions (during years of high predation pressure or poor climatic and foraging conditions). Finally, the low repeatability of baseline PRL levels and high interannual variability highlight considerable within-individual flexibility in baseline PRL levels. Further research should explore flexibility in parental effort to changing environmental conditions, focusing on both baseline and stress-induced PRL levels.

Effects of a monthly unconditional cash transfer starting at birth on family investments among US families with low income.

How does unconditional income for families in poverty affect parental investments for their young children? Mothers in four US metropolitan areas were randomized to receive a monthly unconditional cash transfer of either $333 per month (high) or $20 per month (low) for the first several years after childbirth. During the first 3 years, high-cash gift households spent more money on child-specific goods and more time on child-specific early learning activities than the low-cash gift group. Few changes were evident in other core household expenditures. Compared with low-cash gift families, high-cash gift families reported lower rates of public benefit receipt and fewer were residing in poverty, although mean income and wealth remain low for the majority of families by year 3. No statistically significant differences were evident in mothers' participation in paid work, children's time in childcare or mothers' subjective wellbeing.

Rural–urban differences in the intergenerational transmission of cognitive capabilities in China: evidence from a Northwestern province of China

PurposeLiterature has shown that the intergenerational transmission of cognitive abilities is stronger for children raised in more advantaged environments. However, there has never been an empirical investigation of this pattern in China. This study examines differences in the intergenerational transmission of cognitive capabilities among mothers and young children in urban and rural subpopulations in China and investigates whether these differences are driven by differences in parental investment in the home environment.Design/methodology/approachData collected from randomly selected 6- to 36-month-old babies and their mothers in a Northwestern province in China was used. Child capabilities were assessed by the Bayley Scales of Infant and Toddler Development (3rd edition). Maternal intelligence quotient (IQ) scores were assessed with the Raven’s Progressive Matrices test. The non-parametric regression methods were used to construct the factor scores of child capabilities. The ordinary least squares (OLS) models were employed to investigate the relations between child cognition, maternal IQ and parental investment.FindingsIn urban households, where most children are raised in a positive home environment, child cognitive scores are strongly correlated with maternal IQ. In rural households, where parental investments are lower and more variable, child cognitive scores are not significantly correlated with maternal IQ but are predicted by differences in parental investments in a cognitively stimulating home environment.Originality/valueThis study provides a unique contribution by utilizing rural–urban disparities in China as a unique natural experiment to investigate differences in the transmission of cognitive capabilities across socioeconomic status (SES). It also provides the first empirical evidence of SES differences in the intergenerational transmission of cognitive capabilities in a developing country. This study reveals that intergenerational mother–child cognition associations are disrupted by poor parental investment in rural households but not in urban households.

Pricing the priceless childcare: Early childhood education for babies and toddlers.

This article connects Viviana Zelizer's theory of the social meaning of money to family studies, using the case of American parents' spending on children. We investigate how money spent on the youngest children-babies and toddlers-reflects the growing expert emphasis on the importance of parental investment in the critical early period for child development. First, we review literature on expert knowledge to trace the shift in increasing emphasis on the importance of building children's cognitive skills through formal education beginning in infancy, offered in center-based care, moving from spaces of "childcare" to "early childhood education" centers. Second, we use quantitative data from the Consumer Expenditure Survey (1995-2017) to show that parents have increasingly spent money, and an increasing share of their income, on center-based care for babies and toddlers but not on otherchild items. Additionally, lower income families have been spending a greater share of their income on center-based care for their infants than other families. We interpret our findings using Zelizer's theory about the cultural influences on the meaning of money, showing how these can be expert-led and persist even when families are faced with structural economic constraints.

Maternal investment evolves with larger body size and higher diversification rate in sharks and rays

Across vertebrates, live bearing evolved at least 150 times from ancestral egg laying into diverse forms and degrees of prepartum maternal investment.1,2 A key question is how reproductive diversity arose and whether reproductive diversification underlies species diversification.3,4,5,6,7,8,9,10,11 To test this, we evaluate the most basal jawed vertebrates: the sharks, rays, and chimaeras, which have one of the greatest ranges of reproductive and ecological diversity among vertebrates.2,12 We reconstruct the sequence of reproductive mode evolution across a phylogeny of 610 chondrichthyans.13 We reveal egg laying as ancestral, with live bearing evolving at least seven times. Matrotrophy evolved at least 15 times, with evidence of one reversal. In sharks, transitions to live bearing and matrotrophy are more prevalent in larger-bodied tropical species. Further, the evolution of live bearing is associated with a near doubling of the diversification rate, but there is only a small increase associated with the appearance of matrotrophy. Although pre-copulatory sexual selection is associated with increased rates of speciation in teleosts,3 sexual size dimorphism in chondrichthyans does not appear to be related to sexual selection,14,15 and instead we find increased rates of speciation associated with the colonization of novel habitats. This highlights a potential key difference between chondrichthyans and other fishes, specifically a slower rate of evolution of reproductive isolation following speciation, suggesting different rate-limiting mechanisms for diversification between these clades.16 The chondrichthyan diversification and radiation, particularly throughout shallow tropical shelf seas and oceanic pelagic habitats, appear to be associated with the evolution of live bearing and proliferation of a wide range of maternal investment in developing offspring.