Parental History of Childhood Maltreatment and Offspring Attachment Insecurity and Disorganization: Two Meta-Analyses.

Research findings have shown that parental history of childhood maltreatment (CM) increases the risk of insecure and disorganized attachment in offspring. However, the extent of the detrimental effects of childhood trauma on attachment in the next generation is unclear. The current meta-analyses aimed at synthesizing the available literature on the link between parental history of CM and offspring attachment insecurity and disorganization (with no restriction of offspring age). In total, 25 studies (23 unique samples; N = 2,592) comprising u = 61 effect sizes were included. Offspring age ranged from 12 to 79 months (Mweighted = 18.69; SDweighted = 11.53). Findings from two three-level random effects meta-analyses revealed a weak but significant combined effect of parental history of CM on child attachment insecurity (k = 20, u = 35, r = .06) and a non-significant effect on child attachment disorganization (k = 12, u = 26, r = .03). For the meta-analysis on disorganization, effect sizes were weaker in more recent studies, and trim and fill analyses provided evidence of publication bias. These findings provide a nuanced view of the intergenerational transmission of childhood trauma phenomenon, whereby parents' self-reported history of CM does not appear decisive for child attachment. Conclusions could not be drawn for specific types of CM because of the small number of studies. Research with more objective measures of parental exposure to CM is needed to gain a more comprehensive view of the possible intergenerational effects of CM on child attachment.

The Total Effect of Social Origins on Educational Attainment: Meta-analysis of Sibling Correlations From 18 Countries.

The sibling correlation (SC), which estimates the total effect of family background (i.e., social origins), can be interpreted as measuring a society's inequality of opportunity. Its sensitivity to observed and unobserved factors makes the SC an all-encompassing measure and an attractive choice for comparative research. We gather and summarize all available estimates of SCs in educational attainment (M = .46, SD = .09) and employ meta-regression to explore variability in these estimates. First, we find significantly lower SCs in Sweden, Norway, Finland, and Denmark than in the United States, with U.S. correlations roughly .10 (i.e., 25%) higher. Most other (primarily European) countries in our study are estimated to fall in between these countries and the United States. Second, we find a novel Great Gatsby Curve-type positive association between income inequality in childhood and the SC, both cross-nationally and within countries over time. This finding supports theoretical accounts of the Great Gatsby Curve that emphasize the role of educational inequality as a link between economic inequality and social immobility. It implies that greater equality of educational opportunity likely requires reduced economic inequality. Additionally, correlations between sisters are modestly higher, on average, than those between brothers or all siblings, and we find no overall differences between cohorts.

Population attributable fractions of depression and anxiety among Aboriginal and Torres Strait Islander peoples: a population-based study.

Background: Aboriginal and Torres Strait Islander peoples face an increased risk of common mental disorders, which may be associated with underlying socio-economic challenges, racism, and discrimination. This is the first study to calculate the population attributable fractions (PAFs) for depression and anxiety attributed to potentially modifiable risk factors such as health behaviour, social and cultural characteristics, and past adverse events among Aboriginal and Torres Strait Islander peoples aged ≥15 years. Methods: This cross-sectional study examined the 2018-19 National Aboriginal and Torres Strait Islander Health Survey conducted by the Australian Bureau of Statistics. Logistic regression models were used to compute odds ratios (ORs). PAFs adjusted for communality were calculated using adjusted ORs and prevalence estimates for each risk factor. Findings: This study included a weighted sample of 5362 individuals, with a mean age of 40.8 years (SD = ±17.2). Personal income below the national average (PAF = 13.4%; 95% CI: 12.4, 14.5), severed access to Indigenous cultural affiliations (PAF = 12.8%; 95% CI: 11.8, 13.8), central obesity (PAF = 7.2%; 95% CI: 6.4, 8.0), daily smoking (PAF = 5.9%; 95% CI: 5.2, 6.7) and severed access to Indigenous knowledge (PAF = 5.2%; 95% CI: 4.5, 5.8) were associated with 45% of depression cases. Personal income below the national average (PAF = 10.7%; 95% CI: 9.8, 11.7), limited access to Aboriginal Community Controlled Health Services (PAF = 10.6%; 95% CI: 9.7, 11.6), central obesity (PAF = 7.1%; 95% CI: 6.3, 7.9), severed access to Indigenous knowledge (PAF = 5.7%; 95% CI: 4.9, 6.4) and the experience of discrimination in the last 12 months (PAF = 4.7%; 95% CI: 4.0, 5.3) were associated with 39% of anxiety cases. Interpretation: To reduce the burden of depression and anxiety disorder among Aboriginal and Torres Strait Islander peoples, addressing socio-economic and cultural harms that constrain healthy connections to people/kin, their rights, languages, land, and healthy food sources should be a priority. Funding: This work was funded by a grant from the Commonwealth of Australia, represented by the Department of Health and Aged Care (Grant Activity 4-DGEJZ1O/4-CW7UT14).

In Dabouki Land: Interdisciplinary notes on the cultural history of a landrace grape cultivar in Israel.

Cultivated for millennia, the grapevine held a special status as one of the most important fruits in the historical Levant and the Mediterranean world. However, since past farmers typically did not leave written accounts of their activities, viticulture history is often shrouded in ambiguity, especially concerning the classification of grapevine landrace varieties. Hence, the study of archaic viticulture relies heavily on methodological fusion to unravel its more readily discernible biological and oral traditions. We therefore merged archaeological fieldwork, historical archival analysis, field geography and ethnographic interviews to collect multifarious data on the Dabouki grapevine. Our analytical synthesis enabled us to depict how, over the course of history, diverse communities variously grew this cultivar in dryland vineyards. The cultural history of the Dabouki stretches from at least the Ottoman era, when it was widely planted throughout the region under various names, to its current revival by enterprising Israeli and Palestinian winemakers. The majority of our research was conducted within a unique environmental corridor in the western Negev of Israel where dense concentrations of relic Dabouki grapevine survive. Our paper surveys the cultural history of the Dabouki grape as a flagship cultivar in the intergenerational horticultural regimes of arid land farmers in the western Negev of the southern Levant. Remarkably, archaic Negev viticulturalists used the same cultivars across successive historical periods and varying socioeconomic contexts. As such, the paper illustrates that arid regions with longstanding winegrowing traditions are ideal for locating endemic grapevines that apparently can withstand challenging growing conditions. Focusing on the enduring legacy of the Dabouki, we suggest how historical knowledge of ancient dryland farming systems and landrace cultivars can bolster the sustainability of contemporary viticulture.

The care of non-institutionalized ADL-dependent people in the Orcasitas neighborhood of Madrid (Spain) during the Covid-19 pandemic and its relationship with social inequalities, intergenerational dependency and survival.

Background: Mortality among people with dependency to perform basic activities of daily living (ADL) is higher than that of non-dependent people of the same age. Understanding the evolutionary course and factors involved in non-institutionalized ADL dependency, including the influence of the family structure that supports this population, would contribute to improved health planning. Methods: A longitudinal study carried out in the ADL-dependent population of the Orcasitas neighborhood, Madrid (Spain), between June 2020, when the nationwide COVID-19 lockdown ended, and June 2023. A total of 127 patients participated in the study, 78.7% of whom were women and 21.3% were men. Risk analysis was performed via odds ratios (OR) and hazard ratios (HR). Survival analysis was performed using Cox regression. Results: A total of 54.33% of the ADL-dependent persons did not live with their adult children and 45.67% did, being associated living independently with economic capacity and the married marital status but not with the dependency level. In women, being married increased the probability of living independently of their adult children (OR = 12.632; 95% CI = 3.312-48.178). Loss of mobility (OR = 0.398; 95% CI = 0.186-0.853), economic capacity of the dependent (HR = 0.596; 95% CI = 0.459-0.774), and living independently and having better economic capacity (HR = 0.471; 95% CI = 0.234-0.935) were associated with 3-year survival. Those who lived with their adult children had a worse autonomy profile and higher mortality (HR = 1.473; 95% CI = 1.072-2.024). Not being employed, not being married, and not owning a home were significantly associated with being an essential family caregiver. Caregivers were mostly women (OR = 1.794; 95% CI = 1.011-3.182). Conclusion: Among ADL-dependent persons, economic capacity influenced the ability to living independently and affected survival after 3 years. Loss of mobility (wheelchair use) was a predictor of mortality. Social inequalities promote that adult children end up as essential family caregivers. This generates reverse dependency and maintains a vulnerability that is transmitted from generation to generation, perpetuating social and gender inequalities. Dependent parent care in this cohort maintained an archaic pattern in which the eldest daughter cared for her parents. This study made it possible to show that ADL dependence is accompanied by complex interrelationships that must be considered in socio-health planning.

Associations of caring for grandchildren and great-grandparents with depressive symptoms and life satisfaction in Chinese grandparents: The moderating roles of urban-rural residence and social participation.

This study aims to investigate the associations of caring for grandchildren and/or great-grandparents with depressive symptoms, as well as life satisfaction in Chinese grandparents, and analyze the moderating roles of urban-rural residence and social participation. A nationally representative sample of 2973 grandparents in families with great-grandparents and grandchildren were selected from the 2018 China Health and Retirement Longitudinal Study (CHARLS). The Center for Epidemiologic Studies Depression (CESD-10) and the single-item were used to measure depressive symptoms and life satisfaction. Social participation included participation in social and intellectual activities. The binary logistic regression model was employed to explore the relationship between caring and depressive symptoms, as well as life satisfaction in the whole participants, different urban-rural residence, and social participation groups, respectively. Caring was associated with depressive symptoms and life satisfaction (p < 0.05). A significant interaction existed between caring and urban-rural residence for depressive symptoms (interaction p = 0.029) and life satisfaction (interaction p = 0.027). Significant interactions were also found among caring, urban-rural residence, and social activities with depressive symptoms (interaction p = 0.025). In urban, caring for both was negatively related to depressive symptoms for the non-social activists, while in rural, caring for great-grandparents was positively associated with depressive symptoms for social activists (p < 0.05). Any new policy design related to preventing and reducing the possibility of mental disorders in Chinese grandparents should be tailored to heterogeneous subgroups who live in different rural-urban and social activities participation.

Intergenerational transmission of comorbid internalizing and externalizing psychopathology at age 11: Evidence from an adoption design for general transmission of comorbidity rather than homotypic transmission.

Psychopathology is intergenerationally transmitted through both genetic and environmental mechanisms via heterotypic (cross-domain), homotypic (domain-specific), and general (e.g., "p-factor") pathways. The current study leveraged an adopted-at-birth design, the Early Growth and Development Study (57% male; 55.6% White, 19.3% Multiracial, 13% Black/African American, 10.9% Hispanic/Latine) to explore the relative influence of these pathways via associations between adoptive caregiver psychopathology (indexing potential environmental transmission) and birth parent psychopathology (indexing genetic transmission) with adolescent internalizing and externalizing symptoms. We included composite measures of adoptive and birth parent internalizing, externalizing, and substance use domains, and a general "p-factor." Age 11 adolescent internalizing and externalizing symptom scores were the average of adoptive parent reports on the Child Behavior Checklist (n = 407). Examining domains independently without addressing comorbidity can lead to incorrect interpretations of transmission mode. Therefore, we also examined symptom severity (like the "p-factor") and an orthogonal symptom directionality score to more cleanly disentangle transmission modes. The pattern of correlations was consistent with mostly general transmission in families with youth showing comorbid internalizing and externalizing symptoms, rather than homotypic transmission. Findings more strongly supported potential environmental or evocative mechanisms of intergenerational transmission than genetic transmission mechanisms (though see limitations). Parent-specific effects are discussed.

Being Under-Benefited and Perceived Stress in the Relationship Between Aging Parents and Adult Children: The Moderating Role of Empathy.

Background and Objectives: Previous studies examining the relationship between being under-benefited and stress among aging parents and their adult children have yielded mixed findings. Few studies have examined whether this positive association can be alleviated by state-level or trait-level factors. Given the positive effects of empathy on interpersonal exchanges, we tested the moderating role of empathy on the relationship between being under-benefited and perceived stress among aging parents and adult children in this 14-day diary study. Research Design and Methods: A sample of 99 pairs of parents (M age = 50.01 years, SD age = 4.53 years; 79.8% female) and children (M age = 22.38, SD age = 3.49; 85.9% female) were recruited reported their level of being under-benefited in the exchange with their parent/child, perceived stress, and empathy as an affective state on a daily basis for 14 consecutive days, after completing a pretest which measured their trait empathy and demographic information. Results: For both parents and children, the positive under-benefited-stress association was only significant when they reported lower affective empathy on a daily basis. The association between the level of being under-benefited and stress was negative when children reported greater affective empathy on a daily basis. Children reported more perceived stress on the days their parents reported a greater level of being under-benefited. Such association was only significant in children with lower trait empathy. The negative association between children's being under-benefited and parents' perceived stress was only significant in parents with higher trait empathy. Discussion and Implications: These findings highlight the importance of empathy as a daily affect and a trait in the relationship between daily exchanges and mental health in the intergenerational contexts between aging parents and adult children.

From grandmothers to granddaughters: Generational agricultural knowledge among rural women in British Mandate Palestine.

Palestinian peasant families had to adapt and survive under political and economic conditions dictated by European occupation and Zionist settler colonialism. Women had a major role in contributing to the efforts for survival and acquiring their status in the rural economy and the wider national struggle against British policies. Rural Arab families constituted the vast majority of the Palestinian population before the Nakba, or those displaced from their villages during the war on Palestine in 1948, and the formation of the State of Israel. The agricultural knowledge Palestinian women had and passed from one generation to the other was an important element for the survival of the peasant families under the different periods in which colonial countries and Zionist settlement shook the base of their economic existence.

A Technology-Supported Psychoeducational Intervention for Older Adults and Their Families to Improve Social Isolation, Loneliness, and Intergenerational Connectedness-A Randomized Controlled Study.

Information and communication technologies (ICT) provide digital tools to support and facilitate social engagement. However, the extent to which new ICTs, such as instant messaging, and training on its use, enhance intergenerational family interactions and reduce social isolation and loneliness needs further exploration. In the present study, we developed a brief psychoeducational intervention to promote older adults and their family members (N = 64) to use new technologies to increase communication with each other. With a randomized controlled trial design, we evaluated the effectiveness of the intervention in changing primarily participants' intergenerational interactions, perceived social isolation, and loneliness. Through repeated-measures analysis of variance, an overall condition by time effect was found in younger family members such that contact frequency improved in the intervention condition compared with the waitlist control condition. Using a dyadic framework, we further investigated the role of the intervention in fostering interactions among family members. Dyadic analyses showed a partner effect with contact frequency in younger adults at pre-assessment predicting contact frequency of older adults at post-assessment. This suggests that support and encouragement from younger family members could increase intergenerational interactions and technology adoption among older adults. Moreover, online phone calls served as a promising tool to enhance intergenerational communication; higher user satisfaction was associated with increased ICT use, perceived usefulness, and fewer barriers to technology. This study provides preliminary findings on the effectiveness of ICT-based interventions for engaging older adults and their family members in the use of newer technologies to promote intergenerational interactions and reduce social isolation.

Implementing an integrated family approach in mental health care for families experiencing complex and multiple problems: a case example in Amsterdam.

For youth care professionals who work with families with complex needs, we implemented an interagency, family-focused approach involving child and adult mental health care services and child protection services. The primary objective of the collaboration was to minimize fragmentation in service delivery and to improve practitioners' self-efficacy in supporting families. A total of 50 families were enrolled between 2020 and 2023. Quantitative descriptive analysis was conducted to map the sample characteristics and the correlations between the practitioners' consultation requests and the recommendations they received. We evaluated the applicability of the model using semi-structured interviews. Results revealed the frequent socioeconomic and psychosocial challenges and co-current mental health issues faced by the families. As expected, practitioners who work with families experiencing complex and multiple problems encountered a range of difficulties in their service delivery. These related to barriers such as poor role demarcation between organizations, practitioners' unrealistic expectations of other services, the impact of multiple problems on family well-being, and complicated family dynamics. The interprofessional collaboration improved the practitioners' self-efficacy in supporting families. They also perceived improvements in child safety. The study emphasizes the need for clear pathways for youth care practitioners to obtain assistance from adult mental health services and to liaise with community support and services. It proposes including adults and young people with lived experiences in the interprofessional collaboration. The study data provides initial evidence that the interagency model has added value for youth care professionals who struggle with issues in family-focused care.

Race and ethnic differences in step- versus biological parent support to adult children.

Objective: This brief report examines differences in step- versus biological family support between White, Black, and Hispanic families in the United States. Background: The increasing share of stepfamilies reflects a potential shift in family relationships. Although research finds that stepfamilies are generally less likely to engage in instrumental support than biological families, recent work suggests that the relationship between family structure and family behaviors may vary across racial/ethnic groups. Method: Using data from the 2015-2017 Add Health Parent Study, this report examines racial/ethnic differences in step- versus biological family support between parents and adult children. Specifically, parents' likelihood of and hours of providing instrumental support to adult children are assessed. Results: Findings from this report indicate for Black and White families, stepfamilies are less likely to provide instrumental support to their adult children than biological families. Among Hispanic families, however, stepfamilies are not more or less likely to provide support than biological families. When hours of instrumental support are examined, White stepfamilies provide fewer hours of support than biological families, whereas no difference is found for Black or Hispanic families. Conclusion: Findings from this study contribute to broader work that calls for more nuanced understanding of the differential effects of family structure across social groups. Future research should consider applying within-race/ethnicity analyses when examining the association between family structure and intergenerational support.

Polycyclic aromatic hydrocarbon exposure effects on trajectories of maternal and adolescent mental health.

BACKGROUND: Parental psychological distress is a well-known risk factor for developmental psychopathology, with longer term parental distress associated with worse youth mental health. Neurotoxicant exposure during pregnancy is a risk factor for both poor maternal and youth mental health. The impact of one class of pollutant, polycyclic aromatic hydrocarbons (PAH), on long-term trajectories of maternal distress and youth self-reported mental health symptoms in adolescence has been understudied. METHODS: PAH exposure was measured by DNA adducts in maternal blood sampled during the third trimester of pregnancy. Maternal distress, operationalized as maternal demoralization, was measured at 11 timepoints (prenatal to child age 16). Adolescent mental health symptoms were measured at age 13-15. Follow up analyses examined a subset of measures available at age 15-20 years. Structural equation modeling examined associations between PAH exposure during pregnancy and latent growth metrics of maternal distress, and between maternal distress (intercept and slope) and youth mental health symptoms in a prospective longitudinal birth cohort (N = 564 dyads). RESULTS: Higher prenatal PAH exposure was associated with higher concurrent maternal distress. Prenatal maternal distress was associated with adolescent's self-reported anxiety, depression, and externalizing problems. On average, maternal distress declined over time; a slower decline in mother's distress across the course of the child's life was associated with greater self-reported anxiety and externalizing problems in youth. CONCLUSIONS: Our findings are consistent with an intergenerational framework of environmental effects on mental health: PAH exposure during pregnancy affects maternal mental health, which in turn influences mental health outcomes for youth well into adolescence. Future research is necessary to elucidate the possible social and biological mechanisms (e.g., parenting, epigenetics) underlying the intergenerational transmission of the negative effects of pollution on mental health in caregiver-child dyads.

Intergenerational Transmission of Divorce in Sweden, 1920-2015.

Many studies demonstrate an intergenerational transmission of divorce with a focus primarily on more recent decades; however, the extent to which this relationship is deeply rooted or has changed over time remains unclear. Explanations, including sociodemographic and interpersonal factors, have been offered as links between parental divorce and the stability of offspring's marriage. We use individual-level longitudinal data from the Scanian Economic-Demographic Database to estimate the intergenerational transmission of divorce among first marriages in Sweden over the period 1920-2015. Our investigation focuses on the correlation between parental divorce and offspring's divorce during the transition from a low- to a high-divorce regime. Findings reveal surprising stability in the transmission despite fundamental societal change over the years. Notably, the risk of divorce is highest when either the wife or both spouses have experienced parental divorce. Moreover, the transmission of divorce across time appears to be stronger and more stable for women than for men. These results suggest the intergenerational transmission of divorce is part of the divorce transition and highlight the role of women's independence in this intricate but not yet fully understood process.

From Hinengaro to Hineora: Tracing the origins of Intergenerational Trauma to attain Intergenerational Healing.

In Aotearoa New Zealand, colonisation continues to impact Indigenous Maori lived realities. However, Maori have been steadily progressing towards reclamation of all that was suppressed during colonisation, including tupuna (ancestor) understandings of trauma and healing, of which wairua (referring to spirit) is at the centre. My research aimed to understand the role of wairua in the intergenerational transmission of trauma and healing through exploring my own lived experiences of trauma and healing. My methodology was developed based on tupuna knowledge, resulting in the implementation of a Rongo-a-Wairua Framework, a Whakapapa Methodological Approach, Whakapapa Wananga and Te Putake: An Origin Analysis. Through this application of tupuna knowledge and the centring of wairua within the research process, I uncovered the origins of the soul wounds I had inherited, enabling me to transform from Hinengaro, The Obscured Daughter into who I am now - Hineora, The Daughter of Healing.

Hormetic dose response induced by sublethal-dose sulfoxaflor leads to reproductive stimulation of Aphis gossypii.

Aphis gossypii Glover is one of the most agriculturally important phloem-feeding economic pests, causing tremendous loss in crop yield annually. The hormesis is an important cause of A. gossypii resistance formation, population resurgence, and re-outbreak. However, whether the hormesises induced by different insecticides interact mutually remain largely unclear. In the study, four-generation A. gossypii experiment found that the 24-h sublethal-dose (LC20) sulfoxaflor treatment on G0 significantly increased the net reproductive rate (R0) and fecundity of G1 and G2 generation A. gossypii, but it did not significantly affect the fecundity of G3 and G4 individuals. Transcriptomic analyses revealed that the insecticide-induced significant up-regulation of pathways ribosome, energy metabolism, and the DNA replication and reparation might be responsible for the enhancement of fecundity in G1 and G2 A. gossypii. Notably, G0 exposure to LC20 sulfoxaflor followed by G1 exposure to LC30 deltamethrin resulted in a stronger reproductive stimulation than sulfoxaflor or deltamethrin exposure alone. Our findings provide valuable reference for optimizing sulfoxaflor application in integrated pest management strategies.

"I Just Wouldn't Like Him to go Through What I Went Through as a Kid": A Qualitative Study on the Mitigating Effects of Positive Childhood Experiences in Mothers with a History of Adverse Childhood Experiences in an Irish Population.

Adverse Childhood Experiences (ACEs) are increasingly being acknowledged as a major risk factor for instigating and sustaining cycles of trauma between mother and child. Recently, the concept of Benevolent Childhood Experiences (BCEs) has been introduced to ACEs research as a buffer against the transmission of ACEs between generations. Positive childhood experiences such as attachment to caregivers, positive peer relations and positive sense of self have been found to counteract the effects of adverse childhood experiences. The emergence of positive childhood experiences as an adaptive capacity against ACEs should be explored as a tool for psychological change, to help break the cycle of inherited trauma between generations. The present study aims to examine the lived experiences of mothers with a history of ACEs, if they consider their positive childhood experiences when parenting, and how they use these positive experiences to break the cycle of intergenerational trauma. Three women residing in a low-support service for parenting were recruited for this study. Participants were all low-income, first-time single mothers in their early thirties. A qualitative approach was designed for the study. ACEs and BCEs questionnaires were administered to participants and scores were taken into account to contextualise participant interviews. A semi-structured interview was designed in accordance with IPA guidelines. Questions were directed towards phenomenological material, focusing on participants' understanding of their experiences as mothers. Analysis of the interview data revealed three superordinate themes (replicating positive experiences, creating new positive experiences and protecting children from intergenerational trauma) related to participants' BCEs, their children's BCEs and their desire to break the cycle of intergenerational trauma. The findings of this study, namely that participants intentionally tried to create positive experiences with their own children through drawing on their own positive experiences in childhood, supports the idea that BCEs are a legitimate source of adaptive capacity for mothers with ACEs. Parenting interventions for parents with ACEs should be developed taking into account ACE and BCE scores.

A stomate by any other name? The open question of hornwort gametophytic pores, their homology, and implications for the evolution of stomates.

Advances in bryophyte genomics and the phylogenetic recovery of hornworts, mosses, and liverworts as a clade have spurred considerable recent interest in character evolution among early embryophytes. Discussion of stomatal evolution, however, has been incomplete; the result of the neglect of certain potential stomate homologues, namely the two-celled epidermal gametophytic pores of hornworts (typically referred to as 'mucilage clefts'). Confusion over the potential homology of these structures is the consequence of a relatively recent consensus that hornwort gametophytic pores ('HGPs' - our term) are not homologous to stomates. We explore the occurrence and diverse functions of stomates throughout the evolutionary history and diversity of extinct and extant embryophytes. We then address arguments for and against homology between known sporophyte- and gametophyte-borne stomates and HGPs and conclude that there is little to no evidence that contradicts the hypothesis of homology. We propose that 'intergenerational heterotopy' might well account for the novel expression of stomates in gametophytes of hornworts, if stomates first evolved in the sporophyte generation of embryophytes. We then explore phylogenetically based hypotheses for the evolution of stomates in both the gametophyte and sporophyte generations of early lineages of embryophytes.

The Effects of the Great Depression on Children's Intergenerational Mobility.

This article examines the role of the Great Depression in shaping the intergenerational mobility of some of the most upwardly mobile cohorts of the twentieth century. Using newly linked census and vital records from the Longitudinal, Intergenerational Family Electronic Micro-database, we examine the occupational and educational mobility of more than 265,000 sons and daughters born in Ohio and North Carolina. We find that the deepest and most protracted downturn in U.S. history had limited effects on sons' intergenerational mobility but reduced daughters' intergenerational mobility.

Intergenerational metabolism-disrupting effects of maternal exposure to plasticizer acetyl tributyl citrate (ATBC).

Environmental chemicals and pollutants are increasingly recognized for their potential transgenerational effects. Acetyl tributyl citrate (ATBC), a widely used plasticizer substituting di-(2-ethylhexyl) phthalate (DEHP), was identified as an inducer of lipogenesis in male mice by our previous research. This study aimed to investigate the impact of ATBC exposure on the metabolic homeostasis of female mice and simultaneously evaluate its intergenerational effects. Female C57BL/6J mice were orally exposed to ATBC (0.01 or 1 µg/kg/day) for 10 weeks before mating with unexposed male mice. The resulting F1 female mice were bred with unexposed males to generate F2 offspring. Our results indicated that 10-week ATBC exposure disrupted glucose metabolism homeostasis and the reproductive system in F0 female mice. In F1 female mice, elevated liver lipid levels and mild insulin resistance were observed. In the F2 generation, maternal ATBC exposure resulted in increased weight gain, elevated liver triglycerides, and higher fasting blood glucose levels, primarily in F2 male mice. These findings suggest that maternal ATBC exposure may exert intergenerational disturbing effects on glucose metabolism across generations of mice. Further investigation is needed to evaluate the health risks associated with ATBC exposure.