Culture, Cognition, and Parenthood in Japanese and American Homes

Previous family researchers have found that parents who share different demographic backgrounds construct unique parenting styles and beliefs. Although such studies contribute to understanding how parenthood is socially constructed, the information about how parents internalize cultural information and everyday experiences to raise children is missing in the extant literature. To fully comprehend the social construction of parenthood, the linkage between the mind and the behavior of parents within specific social structures needed to be studied. I thus conducted conjoint interviews with 24 Japanese couples and 24 American couples who were raising four-to-six year old daughters and sons to examine how culture and cognition produce parental philosophies and family relationships. By using cognitive sociology as a theoretical framework and grounded theory methods as a mode of analysis, I found that the parents’ construction of parenting beliefs and practices basically depended on how they thought about four analytically distinct relationships: (1) their relationship to their parents; (2) their relationship to their children; (3) their relationship to their marital partner; and (4) their relationship to other people in society. Although fathers and mothers in Japan and the United States talked in general about these four aspects, in the process of doing so they offered unique views on each aspect. Japanese parents tended to view their parents as role models, believe that children and parents teach and learn from each other, consider gender ideology to be the foundation of parental partnership, and rank understanding others\u27 feelings as the most important skill for children. Thus, their parenting philosophies were manufactured through reciprocal relationships with other people. In contrast, American parents tended to want to become better parents than their own parents, prefer to influence and control their children’s lives, consider equality to be the foundation of their parental partnership, and encourage their children to become independent. Therefore, their parenting philosophies were manufactured through self motivation. Through the cross-national comparisons of parents’ cognitive processes, I also discuss: the levels of parental expectations and pressures; the issues around the gender relations within a family; and the roles of international parenting books in a globalizing world

The Changing Culture of Fatherhood and Gender Disparities in Japanese Father\u27s Day and Mother\u27s Day Comic Strips: A 55-Year Analysis

LaRossa, Jaret, Gadgil, and Wynn (2000, 2001) conducted a content analysis of 495 comic strips published on Father’s Day and Mother’s Day in the United States from 1945 to 1999 in order to determine whether the culture of fatherhood and gender disparities in the media had changed over the past half-century. Drawing on their research, I conducted a similar kind of analysis of 246 comic strips published on Father’s Day and Mother’s Day in Japan from 1950 to 2004. By comparing and contrasting the results in the two studies, I show how comic portrayals of families have changed in Japan and in the United States, and demonstrate the value of analyzing comic strips in cross-national research

The Impact of Leisure Activities on Older Adults' Cognitive Function, Physical Function, and Mental Health

Engagement in leisure activities has been claimed to be highly beneficial in the elderly. Practicing such activities is supposed to help older adults to preserve cognitive function, physical function, and mental health, and thus to contribute to successful aging. We used structural equation modeling (SEM) to analyze the impact of leisure activities on these constructs in a large sample of Japanese older adults (N = 809; age range 72–74). The model exhibited an excellent fit (CFI = 1); engaging in leisure activities was positively associated with all the three successful aging indicators. These findings corroborate previous research carried out in Western countries and extend its validity to the population of Eastern older adults. Albeit correlational in nature, these results suggest that active engagement in leisure activities can help older adults to maintain cognitive, physical, and mental health. Future research will clarify whether there is a causal relationship between engagement in leisure activities and successful aging

Usefulness of the serum creatinine/cystatin C ratio as a blood biomarker for sarcopenia components among age groups in community-dwelling older people: The SONIC study

Fang W., Godai K., Kabayama M., et al. Usefulness of the serum creatinine/cystatin C ratio as a blood biomarker for sarcopenia components among age groups in community-dwelling older people: The SONIC study. Geriatrics and Gerontology International , (2024); https://doi.org/10.1111/ggi.14876.Aim: The serum creatinine/cystatin C ratio (CCR) or sarcopenia index is considered a useful marker of muscle mass. However, its usefulness in late-stage older adults remains unclear. We aimed to determine the usefulness of CCR as an indicator of sarcopenia in community-dwelling Japanese adults aged >75 years. Methods: Our study recruited participants aged 70, 80, and 90 ± 1 years during the baseline years, and included a 3-year follow-up in the Septuagenarians, Octogenarians, Nonagenarians, Investigation with Centenarians study. From 2015 to 2018, 955 participants were eligible: 367 in their 70s, 304 in their 80s, and 284 in their 90s. The diagnostic components of sarcopenia, including “low muscle mass, plus low muscle strength, and/or low physical performance,” were evaluated using the bioelectrical impedance analysis-measured skeletal muscle mass index (SMI), handgrip strength, and short physical performance battery (SPPB) score, respectively, in accordance with the Asia Working Group for Sarcopenia 2019 criteria. Separate analyses were performed between each component and CCR, adjusting for sex, body mass index, and other blood biomarkers in each group. Results: The relationship between CCR and sarcopenia components was significant for handgrip strength (β = 0.21, 0.13, 0.19, and P < 0.0001, =0.0088, <0.0001, for the 70s, 80s, and 90s age groups, respectively); however, it was limited for SMI (β = 0.14; P = 0.0022, only for the 90s) and not significant for the SPPB score. Conclusion: CCR is a limited indicator of sarcopenia in late-stage older adults. Although its association with muscle strength was significant, its relationship with muscle mass and physical performance was less pronounced

Larval pufferfish protected by maternal tetrodotoxin

Marine pufferfish contain tetrodotoxin (TTX), an extremely potent neurotoxin. All species of the genus Takifugu accumulate TTX in the liver and ovaries, although the tissue(s) in which it is localized can differ among species. TTX is the major defense strategy the pufferfish appears to use against predators. TTX is also used as a male-attracting pheromone during spawning. Here we demonstrate an additional (and unexpected) use of maternal TTX in the early larval stages of the Takifugu pufferfish. Predation experiments demonstrated that juveniles of all the species of fish used as predators ingested pufferfish larvae, but spat them out promptly. Liquid Chromatography-Tandem Mass Spectrometry (LC-MSMS) analysis revealed that the pufferfish larvae contain a small quantity of TTX, which is not enough to be lethal to the predators. Immunohistochemical analysis with anti-TTX monoclonal antibody revealed that the TTX is primarily localized in the body surface of the larvae as a layer of protection. Our study showed the female parent of the Takifugu pufferfish vertically transfers TTX to the larvae through its accumulation in the ovaries, and subsequent localization on the body surface of the larvae