The Relative Impacts of Sibling Relationships on Adolescent Body Perceptions

Illuminating the landscape of sibling relationship quality: An evidence and gap map

This paper used an evidence and gap map (EGM) to advance the scientific understanding of sibling relationship quality among children aged 2 to 18 years by synthesizing literature on 277 empirical studies from 1985 to 2022 to delineate patterns of study design, sampling, and measurement. Most existing research has utilized majority of White, middle-to-upper class, and/or two-caregiver family samples. Nearly 85% (n = 235) of studies used quantitative methods to measure sibling relationship quality across eight domains: conflict, warmth/affection, quality, cohesion, hostility, power/control, positive engagement, and conflict management. A total of 122 studies used a measure of sibling relationship quality as a predictor of sibling behavior, social, psychological, cognitive, health, or physiological outcomes. Future directions for research are discussed.

Health-related behaviors and weight-related outcomes within sibling pairs: A systematic review

BACKGROUND

Siblings reciprocally contribute to mutual social and physical development. The aim of this review was to examine the health-related behaviors and weight-related outcomes within child-sibling pairs and to determine how these factors vary by sibling composition.

METHODS

Following the PRISMA guidelines, a systematic review of studies published since 2000 obtained from MEDLINE, CINAHL, PubMed, Cochrane Reviews, Web of Science, PsycINFO, Health and Wellness, and Science Direct was performed. The eligibility criteria for inclusion were: 1) peer-reviewed and published in English; 2) included children ages 2 to 20 and their siblings; and 3) explored health-related behaviors (i.e., diet) and/or weight-related outcomes (i.e., body weight) within child-sibling dyads.

RESULTS

A total of 13 studies were included in the review. The study findings are summarized according to three major themes: 1) sibling concordance in health-related behaviors and weight-related outcomes, 2) differences in health-related behaviors within weight-concordant/weight-discordant sibling dyads, and 3) influence of sibling composition on health-related behaviors and weight-related outcomes.

CONCLUSIONS

Family-based interventions for childhood obesity may benefit from including siblings as key family members in promoting children's health-related behaviors and preventing excessive weight gain. Future studies should explore variable sibling dynamics (e.g., adoptive siblings) in more culturally/racially diverse families to further explore the role of a sibling in a child's health.

IMPLICATIONS TO PRACTICE

The findings of this study may help healthcare providers in developing effective family-based obesity interventions for families with more than one child in their household.

Negative messages from parents and sisters and Latina college students' body image shame

Using the sociocultural model and risk and resilience theory, we examined the moderating role of Latinas' family relationship quality on the associations between negative eating and weight messages from fathers, mothers, and sisters, and Latinas' body image shame. Utilizing Amazon Mechanical Turk, we recruited a sample of 195 Latina young adults (M_age = 23.24, range = 18 -25; SD = 1.95; 67.4 % Mexican-origin) who reported retrospectively on negative appearance-related messages from each family member (i.e., fathers, mothers, and sisters), positive (e.g., parental warmth and sibling intimacy) and negative (i.e., parental psychological control and sibling negativity) relationship quality with parents and sisters, and current body image shame. Hierarchical linear regression analyses revealed that negative eating and weight messages from fathers, mothers, and sisters and sibling negativity were positively and significantly associated with Latinas' body image shame. Further, we found that under conditions of high paternal psychological control but not low, the associations between fathers' messages and Latinas' body image shame were strengthened. For mothers, under conditions of low maternal psychological control but not high, the associations between mothers' messages and Latinas' body image shame were strengthened. Our findings reveal that family members' negative comments are harmful for Latinas' body image.

Exploring the Structure of Sibling Relationships Among Preschool Children in China and Developing a Questionnaire

Objective

The objective of this study was to examine the structure of sibling relationships among preschool children in China and develop a questionnaire.

Methods

The concept of sibling relationships among preschool children in China was established through literature review, open interviews, and expert review, and the initial project was designed. Using the questionnaire survey method, with 651 mothers of preschool children as the research objects, we performed item analysis, exploratory factor analysis, confirmatory factor analysis, and reliability and validity tests on the initial questionnaire.

Results

The questionnaire for the sibling relationships among preschool children in China had 18 questions covering dimensions of sibling interaction, sibling acceptance, sibling warmth, and sibling rivalry. The questionnaire fitting indexes were better (χ2/df = 1.829, CFI = 0.930, TLI = 0.917, RMSEA = 0.055, SRMR = 0.053). The internal consistency coefficient between the total questionnaire and each dimension was 0.759–0.8548, and the total questionnaire significantly correlated with each dimension (r = 0.229–0.792) and the total score of parental self-efficacy (r = –0.106 to 0.338).

Conclusion

The Sibling Relationship Questionnaire for Chinese Preschool Children (Parental Version) exhibited good reliability and validity, making it an effective tool for the evaluation of sibling relationships among preschool children.