Differential experiences of siblings in the same family as predictors of adolescent sibling personality differences

In the area of personality development, environmental influences operate to make siblings in the same family different rather than similar to each other. The goal of the present study was to determine whether differential experience of siblings can be used to explain the marked personality differences of siblings. The Sibling Inventory of Differential Experience (SIDE) along with personality information (the EAS Temperament Inventory and questions about career expectations) was administered to 50 biological sibling pairs and 98 adoptive sibling pairs in adolescence and young adulthood. The results indicated that differential sibling interaction and differential peer characteristics as self-reported on the SIDE explain 6%-26% of the variance in sibling personality difference scores. For example, the sibling who reports more sociability as compared to his sibling also experiences more sibling closeness and more peer popularity as compared to his sibling. Comparison between adoptive and biological siblings indicates that the SIDE relations are mediated environmentally rather than genetically.     

Sisterhood-Brotherhood is Powerful: Sibling Sub-Systems and Family Therapy

Sibling interaction is an often overlooked aspect of family functioning. Individual development and many family behavior patterns may be attributed to autonomous activities within the sibling sub-system.
A number of phenomena in which siblings have profound influence upon one another are explored. Siblings collude and align with each other, at times help each other resist the powerful vertical influences of parents. Other sibling systems serve to enmesh the youngsters even more with parents. Important sib-behavior patterns include: the death or departure of siblings; the interplay between the sibling sub-system and the parenting system; and the roles that "well" siblings play vis-à-vis their "sick" siblings during family crises. The sibling relationship is seen as a life-long process, highly influential throughout the life cycle.
Understanding of sibling sub-system structure and dynamics can lead to more flexible therapeutic interventions. Direct work with siblings provides the therapist with more options and greater leverage in producing change for all siblings, as well as for other family members.     

First-Name Desirability and Adjustment: Self-Satisfaction, Others' Ratings, and Family Background

The association between undesirable first names and poor psychological adjustment has been studied by several investigators. However, it is not clear if self-ratings, commonness, or others' ratings of name desirability are most important in this relationship. In addition, family background might influence both psychological adjustment and first names. In a sample of undergraduates and their same-sex siblings ( n = 294), self-satisfaction with first names predicted adjustment more consistently than did name commonness and others' ratings of name desirability. Using a paired-siblings design to control for family background, the sibling with higher scores on adjustment was also more satisfied with his or her name and received higher name desirability ratings from others. Results are discussed in terms of identity and the looking-glass self.     

Older siblings influence younger siblings' motor development

Evidence exists for two competing theories about the effects of having an older sibling on development. Previous research has found that having an older sibling has both advantages and disadvantages for younger siblings' development. This study examined whether and how older siblings influenced the onset of their own younger siblings' motor milestones, a heretofore unstudied developmental domain in the sibling literature. Parents of 51 sibling pairs reported their children's crawling and walking onset dates. In keeping with imitation theories, in families where younger siblings crawled or walked earlier than their own older sibling, they did so significantly earlier. Moreover, in keeping with limited parental resource theories, in families where older siblings crawled or walked earlier than their own younger sibling, they did so significantly earlier. Older siblings did influence younger siblings' motor development, but how they did so may have depended on unique family characteristics. Copyright © 2008 John Wiley & Sons, Ltd.     

Differences in Nonshared Individual,School, and Family Variables Between Delinquent and Nondelinquent Hmong Adolescents

The purpose of the current study was to determine whether there were differences between Hmong immigrant siblings on multiple nonshared individual, school, and family variables. Participants were 58 sibling pairs (29 delinquent pairs and 29 nondelinquent pairs), who ranged in age from 13 to 21 years. There were 11 pairs of boys, 3 pairs of girls, and 15 pairs of opposite-sex siblings. Results of a multivariate analysis of variance indicated that delinquent and nondelinquent sibling groups were significantly different in participation in organized activities, antisocial attitudes, delinquent behaviors, school truancy, school performance, and parents' labeling. The findings have implications for future research on sibling delinquency in Hmong immigrant families and for program development and delivery.     

Differences in nonshared individual, school, and family variables between delinquent and nondelinquent Hmong adolescents

The purpose of the current study was to determine whether there were differences between Hmong immigrant siblings on multiple nonshared individual, school, and family variables. Participants were 58 sibling pairs (29 delinquent pairs and 29 nondelinquent pairs), who ranged in age from 13 to 21 years. There were 11 pairs of boys, 3 pairs of girls, and 15 pairs of opposite-sex siblings. Results of a multivariate analysis of variance indicated that delinquent and nondelinquent sibling groups were significantly different in participation in organized activities, antisocial attitudes, delinquent behaviors, school truancy, school performance, and parents' labeling. The findings have implications for future research on sibling delinquency in Hmong immigrant families and for program development and delivery.     

Caregiving Attitudes,Personal Loss,and Stress-Related Growth Among Siblings of Adults with Mental Illness

As parents age, well siblings are often asked to assume caregiving responsibilities for their brother or sister with mental illness. However, relatively little is known about how well siblings prioritize sibling caregiving responsibilities with other life demands. We examined well siblings’ attitudes toward self-care and caregiving for their sibling with mental illness (self- and sibling-care) using two cross-sectional samples. The first sample of well siblings (N?=?242) was used to examine the psychometric properties of the self- and sibling-care measure (SSCM), designed to assess the degree to which siblings prioritize their own needs and the needs of their sibling with mental illness. A second sample (N?=?103) was used to determine the relative contribution of self- and sibling-care attitudes in accounting for variation in well siblings’ reports of personal loss and stress-related personal growth. Results support the psychometric validity of the SSCM and suggest that self- and sibling-care attitudes account for greater variance in scores on perceived personal loss and stress-related growth than demographic or caregiving factors. Our findings support the need to address family care responsibilities and resource limitations through recovery-oriented mental health policies, services, and programs.     

Interpersonal responses among sibling dyads tested for BRCA1/BRCA2 gene mutations.

OBJECTIVE: The familial context plays an important role in psychosocial responses to genetic testing. The purpose of this study was to compare sibling pairs with different combinations of BRCA1/BRCA2 test results on measures of affect, interpersonal responses, and physiological reactions. DESIGN: Forty-nine sibling dyads with different combinations of BRCA1/BRCA2 test results (i.e., mixed, positive, negative) completed a questionnaire, and 35 of the dyads also participated in a laboratory-based discussion of genetic testing. MAIN OUTCOME MEASURES: The primary outcome variables included participant reports of supportive actions toward their sibling, state anger and anxiety, perceptions of sibling behavior, and electrodermal responses. RESULTS: Compared to positive and negative dyads, mixed pairs reported less friendly general support actions, noted more anger, and perceived their sibling to be less friendly and more dominant during the interactions. In comparisons between same-result (i.e., positive, negative) pairs, positive dyads reported more dominant support behaviors and perceived their sibling to be friendlier during the interactions. CONCLUSION: Data suggest that siblings who have different test results may experience more interpersonal strain than siblings who have the same test result. Future research on genetic testing and family relationships can expand upon these findings.     

Social comparisons with siblings made by adolescents with a learning difficulty

Social comparisons and the family environment are important antecedents of self-esteem. In this study the self-esteem and perceptions of stigma of 50 adolescents with a mild-moderate learning difficulty were measured. The self-esteem and stigma scores were factor-analysed to produce five factors: Positive self; Social competence; Being different; Anxiety; and Work competence. Social comparisons made by the adolescents between themselves and their siblings were also measured. Most adolescents 'preferred' (chose more often and gave high scores to) older same-sex siblings while younger opposite-sex siblings were the least preferred (were chosen less often and derogated). An explanation for these findings is suggested in terms of defensive social comparisons due to the loss of self-esteem in having a younger sibling ‘overtake’ the adolescent on developmental milestones, and in the tendency for non-handicapped pre-pubescent children to derogate the opposite sex during gender identity formation. This explanation is supported by the finding that the adolescents with younger siblings scored higher on the Anxiety factor than those who compared themselves with older siblings. Those with younger same-sex siblings were the most anxious. There was also a tendency for adolescents with siblings to score lower on one of the factors than adolescents with no sibling. The discussion raises the questions of how to deal with social comparisons within the family and how to talk to the child with mild learning difficulties about his or her handicap.     

Family interaction patterns and childhood depression

Rehm's (1977) self-control model for depression and Bandura's (1977) concept that children internalize external controls placed upon them are united to predict family interaction patterns that may contribute to the etiology or maintenance of depression in children. Families of depressed, nondepressed, and nonclinic children were compared on rates of, and criteria for, parental and self-reinforcement. Mother-father-child interactions were sequentially coded to reveal that mothers of depressed and nonclinic children both set very high criteria for rewarding their children, compared to mothers of clinic/nondepressed children. However, mothers of depressed children rewarded their depressed children at much lower rates than mothers of either clinic/nondepressed or nonclinic children. These factors, taken together, are discussed in terms of their possible etiological role in childhood depression.     

Parent-child mutuality in early childhood: two behavioral genetic studies

Parent-child dyadic mutuality (shared positive affect, responsiveness, and cooperation) is an important component of family socialization processes. This study sought to extend previous research on mutuality by using a quantitative genetic design to examine between- and within-family variations (e.g., sibling differences) and gene-environment processes. The first study included 125 pairs of identical and same-sex fraternal 3-year-old twins. Observations of mutuality and parents' and observers' ratings of family environment and child behavior were gathered. Greater mutuality was associated with higher socioeconomic status. Moderate sibling similarity in parent-child mutuality was accounted for by child genetic similarity, suggesting evocative gene-environment correlation and nonshared environmental processes. These findings were replicated in a 2nd study of 102 pairs of adoptive and biological siblings.     

Speech‐evoked auditory brainstem responses reflect familial and cognitive influences

Cortical function and related cognitive, language, and communication skills are genetically influenced. The auditory brainstem response to speech is linked to language skill, reading ability, cognitive skills, and speech‐in‐noise perception; however, the impact of shared genetic and environmental factors on the response has not been investigated. We assessed auditory brainstem responses to speech presented in quiet and background noise from (1) 23 pairs of same sex, same learning diagnosis siblings (Siblings), (2) 23 unrelated children matched on age, sex, IQ, and reading ability to one of the siblings (Reading‐Matched), and (3) 22 pairs of unrelated children matched on age and sex but not on reading ability to the same sibling (Age/Sex‐Matched). By quantifying response similarity as the intersubject response‐to‐response correlation for sibling pairs, reading‐matched pairs, and age‐ and sex‐matched pairs, we found that siblings had more similar responses than age‐ and sex‐matched pairs and reading‐matched pairs. Similarity of responses between siblings was as high as the similarity of responses collected from an individual over the course of the recording session. Responses from unrelated children matched on reading were more similar than responses from unrelated children matched only on age and sex, supporting previous data linking variations in auditory brainstem activity with variations in reading ability. These results suggest that auditory brainstem function can be influenced by siblingship and auditory‐based communication skills such as reading, motivating the use of speech‐evoked auditory brainstem responses for assessing risk of reading and communication impairments in family members.     

A psychometric study of the Family Adaptability and Cohesion Evaluation Scales

The Family Adaptability and Cohesion Evaluation Scales (FACES), a measure of family functioning, contains three scales: cohesion, adaptability, and social desirability. These were slightly modified (FACES- R) on the basis of pilot data and were administered to 42 clinic families (families seeking or receiving psychological services) and 206 nonclinic families. Support for the scales was found in high coefficient alpha reliabilities and similarity of the sample means and standard deviations to those of the standardization sample. However, there was little agreement among family members' scale scores. Therapists' ratings of cohesion and adaptability did not correlate with scale scores among clinic families. There was no difference between clinic and nonclinic samples on the cohesion or adaptability scales, although the social desirability scale did discriminate between groups. Factor analysis suggested that cohesion, adaptability, and social desirability cannot be clearly differentiated using this measure.This work was supported by the American Association of University Women and by Grant R01HD13820 from the National Institute of Child Health and Human Development.     

The Role of Contextual Threat in Predicting Self-Reported Distress among Siblings of Children with Cancer

Each year, 14,000 children are diagnosed with cancer in the United States. Prolonged, intensive treatment regimens disrupt the entire family system, but effects on siblings are poorly understood. In this preliminary investigation, we employed a risk and resistance framework to study adjustment among 30 siblings (aged 10–17) of children undergoing cancer treatment. We examined whether or not objective stress associated with the cancer experience (contextual threat) predicted sibling distress and explored demographic and disease-related predictors of sibling adjustment. Contextual threat was positively associated with sibling-reported distress, independent of sibling age, gender, birth order relative to the child with cancer, and cancer treatment intensity. From among the demographic and disease-related factors, only younger birth order relative to the child with cancer was independently associated with sibling distress. These results suggest that a subset of siblings may be at increased risk for elevated distress in the face of their brother’s or sister’s illness.     

同胞共情：特点、影响因素及理论机制

同胞之间的交流和互动更能促进彼此共情的发展。随着“全面二孩”政策的实行,同胞共情成为国内外研究者共同关注的焦点。本文在同胞的视角下总结了同胞共情的共性特点和特异性特点,从个体、同胞、家庭三个维度阐述了同胞共情的影响因素。未来研究需要进一步注重文化,回归本土研究;加强双向机制研究,夯实理论框架;重视干预性研究,探索提升同胞共情的方法。     

Variance Distribution in Sibling Relationships: Advantages of Multilevel Modeling Using Full Sibling Groups

The majority of research on sibling relationships has investigated only one or two siblings in a family, but there are many theoretical and methodological limitations to this single dyadic perspective. This study uses multiple siblings (541 adults) in 184 families, where 96 of these families had all siblings complete the study, to demonstrate the value in including full sibling groups when conducting research on sibling relationships. Two scales, positivity and willingness to sacrifice, are evaluated with a multilevel model to account for the nested nature of family relationships. The distribution of variance across three levels: relationship, individual, and family are computed, and results indicate that the relationship level explains the most variance in positivity, whereas the individual level explains the majority of variance in willingness to sacrifice. These distributions are affected by gender composition and family size. The results of this study highlight an important and often overlooked element of family research: The meaning of a scale changes based on its distribution of variance at these three levels. Researchers are encouraged to be cognizant of the variance distribution of their scales when studying sibling relationships and to incorporate more full sibling groups into their research methods and study design.     

Brothers and Sisters: Nature and Importance of the Adult Bond

The closeness, importance and nature of adult sibling relationships were examined in a preliminary study. Forty-eight males and 87 females aged 17 to 84 years were subjects. Each completed a questionnaire about themselves and relationships with their siblings. Results indicated that females were closer to their siblings than were males, same-sex sibling pairs were closer than cross-sex pairs, and younger subjects were closer to their siblings than were older subjects. The nature of the relationship between siblings was very positive with few negative feelings reported. Sex, sexual makeup of the sibling pair, and age also affected the nature of the relationship and topics discussed between siblings.     

Predictors of Children's Emotional Distress in a Mother-Absent Situation: Implications for Caregiving Research

Although many factors have been found to be associated with caregiving behavior among preschool-age siblings, few studies have considered the older child's emotional responses to the distress of a younger sibling in the mother's absence. In this study, the authors considered both individual and family factors that predict older and younger sibling distress in a mother-absent situation designed to elicit caregiving behavior. For both older and younger siblings, the strongest predictor of distress following the mother's departure was distress in the other sibling, suggesting the importance of situational factors. Individual and family factors, however, were also found to predict child distress. Among older siblings, shy and sociable temperaments were associated with greater distress during the mother's absence. Higher levels of parenting stress were found to be associated with less distress among both older and younger siblings in the mother-absent situation. Results are discussed in terms of individual and family environment influences on the sibling relationship.     

Longitudinal associations between parents' hostility and siblings' externalizing behavior in the context of marital discord.

This study examined longitudinal associations between parents' hostility and siblings' externalizing behavior in the context of interparental discord. The sample included 116 families (mothers, fathers, 2 siblings) assessed in middle childhood, when siblings were, on average, 8 and 10 years old, and in adolescence, at average ages of 14 and 16 years. Parents reported on their hostility toward each child and on each child's externalizing problems. Raters observed interparental hostility, and parents rated their marital quality. Results indicated both within-family and between-families effects. Specifically, the child who received more parental hostility than his or her sibling showed greater increases in externalizing problems than his or her sibling; this association was moderated by marital discord. In addition, the child who exhibited more behavioral problems than his or her sibling received greater increases in hostile mothering than did his or her sibling. Between-families effects were evident, in that children's externalizing problems were associated with increases in mothers' hostility toward both children in the family. Results support transactional models of development and family systems theory.