Self-representations in Early Adolescence: Variations in Sibling Similarity by Sex Composition and Sibling Relationship Qualities

Self-representations play an important role in adolescent development. This study compared self-representations for siblings and explored whether sibling relationship characteristics are associated with similarities or differences in sibling self-concepts. We examined self-representations of 438 adolescent sibling dyads ( M age younger sibling  =  11.6 years, M age older  =  14.3 years), finding that siblings are, on average, similar in their self-representations. This similarity varied, however, depending on sex composition and sibling relationship qualities. Results indicated that sibling modeling, warmth, and conflict were especially influential in predicting sibling resemblance vs. dissimilarity.     

Sibling Similarities and Differences in Time Use: A Pattern-Analytic, Within-Family Approach

Similarities and differences in adolescent siblings' free time activities were investigated. Firstborns and second‐borns from 181 predominantly White, working, and middle‐class families reported on their time use and sibling relationships. Their parents reported on their socioeconomic status and neighborhood characteristics. Cluster analysis identified three groups of sibling dyads: Cluster 1 differentiated in leisure and time with friends, Cluster 2 differentiated in instrumental activities and time alone, and Cluster 3 did not differentiate in time use. Multinomial logistic regressions revealed that the longitudinal links between sibling relationship qualities and cluster membership were moderated by firstborns' sex. Findings highlight the importance of person‐oriented analytic strategies for understanding sibling similarities and differences and of within‐family variability in youth's time use.     

Adolescents' Sibling Relationship and Friendship Experiences: Developmental Patterns and Relationship Linkages

The goal of this study was to compare developmental changes in adolescents’ relationship experiences with their siblings versus with their best friends and to determine whether individual differences in adolescents’ sibling experiences were associated with differences in friendship experiences. Participants included 179 firstborn‐secondborn adolescent sibling pairs (N = 358). At the onset of the study, firstborns averaged 15 years of age, and secondborns, 12.5 years of age. Siblings were interviewed individually about their relationship experiences during home interviews each year for three consecutive years. Analyses focused on two relationship dimensions: emotional intimacy and control. Adolescents reported more intimacy with friends than with siblings and more control with siblings than with friends. In the face of these overall patterns, developmental changes in both firstborns’ and secondborns’ reports of intimacy differed across relationships, with sibling intimacy increasing and friendship intimacy decreasing; declines were evident in these two relationships in the case of control. Associations between sibling and friendship experiences were more apparent for control than for intimacy and for secondborns as compared to firstborns. Discussion focuses on the conditions underlying connections between adolescents’ interpersonal relationship experiences.     

Family Talk about Internal States and Children's Relative Appraisals of Self and Sibling

This study investigated associations between preschoolers' conversations about internal states and their spontaneous appraisals of self and sibling. Thirty‐two preschoolers (M age = 3.9 years) were observed during naturalistic home interactions with mothers and younger siblings. Various features of mothers' and children's internal state language were coded. Children who talked about internal states to the baby and who talked more about the baby's perspective tended to appraise their sibling negatively relative to self. In contrast, mothers' references to internal states, as well as their promotion and encouragement of the child's own internal state talk, were negatively related to the differences between children's negative appraisals of self and sibling. These results support the social‐constructivist notion that the quality of children's interactions with family members is related to how they construe themselves in comparison to their siblings.     

Understanding the Self Through Siblings: Self‐awareness Mediates the Sibling Effect on Social Understanding

This study addresses the role of sibling influence on social understanding in the second year of life, in a sample of families living in New Zealand who identify as Pacific Island (N = 43). We tested toddlers at 20 and 26 months on social understanding tasks, as well as their levels of self‐awareness on the Stipek self‐concept questionnaire. We hypothesized that the presence of siblings provides a rich resource from which to learn about the mind. There were significant differences in children's social understanding and self‐awareness as a function of having older siblings. Further analyses revealed that the relation between older siblings and social understanding was mediated by toddlers' level of self‐awareness.     

Children's Physiological Regulation and Sibling Conflict as Correlates of Children's Conscience Development

Children's conscience, including the ability to experience guilt and engage in rule‐compatible behavior, develops across early childhood. The current study investigated whether within‐family variation in children's baseline respiratory sinus arrhythmia (RSA) and sibling conflict behavior were associated with individual differences in children's guilt and internalized conduct. Between‐family differences across sibling dyad gender compositions were also examined. A within‐family design that included 70 families with two siblings between the ages of 2 and 5 was utilized. Children's baseline RSA was measured while sitting quietly with their family. Mothers and fathers completed questionnaires that assessed siblings’ conflict behavior, guilt, and internalized conduct. Older siblings had higher levels of guilt and internalized conduct than younger siblings. Results from actor‐partner interdependence models indicated that there were no direct effects of children's baseline RSA. The interaction effects approached significance (p's ≤ .08) suggesting that older siblings’ conflict moderated the association between older siblings’ baseline RSA and both older and younger siblings’ guilt. In contrast, older siblings’ conflict was positively associated with older and younger siblings’ internalized conduct. Guilt and internalized conduct also differed for older and younger siblings in different dyad gender compositions. The results underscore the need for greater clarity regarding the function that siblings serve in promoting children's moral development during early childhood.     

Parent and Sibling Influences on the Quality of Children's Conflict Behaviours across the Preschool Period

Parent and sibling influences on children's development of conflict management strategies were examined. Data consist of naturally occurring, in‐home sibling disputes of 37 families at two time points. The siblings were approximately two and four years old at Time 1, and four and six years old at Time 2. Parents' and children's use of conflict strategies that reflect proactive autonomy assertions such as opposition and verbal and physical power were the focus of the current study. Results suggest that parents and siblings play an important role in shaping children's conflict behaviours over time. For instance, parents' reliance on unelaborated opposition to the child, and older siblings' increased use of physical power predicted decreases in younger siblings' ability to assert themselves during conflict. In addition, increased proportions of opposition from a younger sibling was associated with the older siblings using less verbal aggression and using more mature conflict strategies such as justifying their own behaviour to their younger sibling. As sibling conflict is a salient child rearing concern for parents, practical implications are discussed.     

Adolescent Sibling Relationship Quality and Adjustment: Sibling Trustworthiness and Modeling,as Factors Directly and Indirectly Influencing These Associations

The main goal of this study was to examine the direct and moderating effects of trustworthiness and modeling on adolescent siblings' adjustment. Data were collected from 438 families including a mother, a younger sibling in fifth, sixth, or seventh grade (M = 11.6 years), and an older sibling (M = 14.3 years). Respondents completed Web‐based surveys describing sibling conflict and warmth. Siblings reported on trustworthiness and modeling, and mothers described adjustment. Sibling conflict was directly associated with internalizing and externalizing behaviors for both siblings. The older siblings' reports of trustworthiness were directly associated with the outcome measures. The younger siblings' reports of trustworthiness were less directly associated, but a possible salutary effect was most evident under the highest levels of sibling conflict or warmth. Higher sibling modeling was a risk factor for adjustment problems in relations characterized by high conflict. Results support exploring trustworthiness as a key dimension of sibling relations.     

Sibling Relationships and Social-emotional Adjustment in Different Family Contexts

The aims of this study were to examine family type (nonstep, stepfather, stepmother, and single mother) and sibling type (full‐ and half‐siblings) differences in sibling relationship quality (positivity and negativity), and to investigate links between sibling relationship quality and child externalizing and internalizing problems. The sample included 192 families with a 5‐year‐old target child and an older sibling. In addition, 80 of these families included a third older child. Mothers and the older siblings (8 years and older) completed questionnaires and interviews regarding conflict and support in their sibling relationships, and parents and teachers reported on each child's social‐emotional adjustment. Sibling negativity (conflict, aggression) was highest in single‐mother families and full‐siblings were more negative than half‐ and stepsiblings. There was some evidence that sibling antagonism was associated with more child behavioral and emotional problems, but these effects were moderated by family type.     

Sibling coalitions in the context of parental child maltreatment

Child maltreatment (CM) is a social and public health issue with a high global prevalence. However, sibling dynamics in the context of CM remain understudied. The present study aims to shed light on sibling relationships in the context of parental CM. The sample included 20 Israeli adult CM survivors who grew up with at least one sibling. In-depth interviews explored their experiences as children, with a focus on their relationship with their siblings. A thematic analysis identified the main theme of the formation, or lack thereof, of sibling coalitions in childhood and adulthood. Some participants described comforting and protective sibling relationships in childhood, whereas others told of conflictual or distant childhood relationships that developed into adulthood alliances. Others described perpetrating parents who attempted to disrupt the sibling relationship. The sibling relationship comprises complex dynamics and emotions, which can vary within a single sibling subsystem. The findings highlight the need to examine sibling dynamics throughout the lifespan and their relation to CM survivors' wellbeing. Regarding the spillover and compensation hypotheses, there is a need to explore the role of the perpetrating parent and their attempts to sabotage the sibling dynamic.     

Power in Sibling Conflict during Early and Middle Childhood

Sources of power children use in sibling conflict during early and middle childhood were examined according to French and Raven's typology of power. Participants included 66 dyads with an older (M = 81.8 months, SD = 14.48 months) and younger (M = 56.2 months, SD = 13.03 months) sibling. Data based upon naturalistic observations were coded for conflict issues (object, procedure, and information), power types (coercive, information, and legitimate), power effectiveness (attempts and successes), and resolutions (win/lose and compromise). Siblings used coercive power in object issues and information power in procedural issues. Whereas younger siblings used legitimate power in procedural and object issues including win/lose and compromise outcomes, older siblings used coercive power in win/lose resolutions. Siblings did not differ in their effectiveness of power, but they were most effective when coercive power was employed. Findings are discussed in light of power theory and the development of conflict management skills.     

Differing Domains of Actual Sibling Conflict Discussions and Associations with Conflict Styles and Relationship Quality

Four types of sibling conflict were identified in actual adolescent sibling discussions: equality and fairness, invasion of the personal domain, intrinsic harm, and relationships. Older [M = 14.97, standard deviation (SD) = 1.69 years] and younger siblings (M = 12.20, SD = 1.90 years) from 144 dyads discussed conflicts during a semi‐structured conflict task. Trained observers coded the topics discussed, and separate observers rated their conflict styles, whereas siblings rated their relationship quality. The proportion of conflicts of each domain differed by dyadic gender composition. Equality and fairness conflicts (and invasion of the personal domain conflicts for sister–sister pairs) were discussed the most frequently whereas intrinsic harm conflicts were associated with destructive conflict styles. Siblings' discussions of conflicts involving intrinsic harm were associated with older siblings' reports of negative relationship quality. The associations between these conflict topics and negative relationship quality were mediated by the siblings discussing the conflicts in destructive ways.     

Young Adolescents' Patterns of Involvement with Siblings and Friends

We identified different patterns in young adolescents' experiences with their siblings and their friends and investigated the connections between these relationship patterns and both young adolescents' psychosocial functioning and the characteristics of their family and neighbourhood contexts. Participants were 141 families, including mothers, fathers, young adolescents (M = 11.4 years), and their younger siblings (M = 8.3 years). Cluster analysis revealed three groups of young adolescents: (1) high intimacy and involvement with sibling, high intimacy with friend but low involvement with friends ('Differentiated'); (2) high intimacy and involvement with friend but not sibling ('Incongruent'); and (3) low involvement and intimacy with both sibling and friend ('Congruent'). The Congruent pattern was associated with young adolescents' personal characteristics and their parent-adolescent relationship experiences. In contrast, the Incongruent and Differentiated profiles were linked to contextual factors (i.e., family and neighbourhood resources). Findings suggest that individual differences exist in the associations between young adolescents' relationships with siblings and friends.     

Older sibling contribution to younger children's working memory and cognitive flexibility

We used structural equation modeling in the Early Childhood Longitudinal Study—Kindergarten Cohort (N = 17,020) to explore the influence of having an older sibling on kindergarten‐age focal children's cognitive self‐regulation. In model 1, we tested how having a sibling who is generally older than the focal child contributes to the focal child's working memory (WM) and cognitive flexibility (CF) upon entering kindergarten. In model 2, we assessed the contribution to the focal child's kindergarten WM and CF of having an older sibling in a non‐proximal age range (age 12–18) or not having siblings relative to having an older sibling in a proximal age range to the focal child (up to age 11). In model 3, we considered the contribution of having an older sister, an older brother, or both an older sister and an older brother of any age. Having an older sibling in general was associated with increased kindergarten WM, whereas having an older sister was related to increased WM and CF. Compared to having a proximal older sibling, having no siblings and having a non‐proximal older sibling were related to decreased WM and CF. Findings have implications for involving siblings in family interventions in early childhood.     

Children's Interpretations of Ambiguous Provocation From Their Siblings: Comparisons With Peers and Links to Relationship Quality

This study investigated how six‐ to eight‐year‐old children interpret ambiguous provocation from their siblings. In particular, we examined how children's attributions of their siblings' intent (1) differed from those for their peers, (2) varied as a function of the structural features of the sibling relationship, and (3) were associated with the affective qualities of the sibling relationship. A total of 121 children were presented with ambiguous provocation scenarios in which three groups of agemates were described as the perpetrators of harm (siblings, friends, and disliked peers). Scenarios were designed to assess children's attributions of hostile, instrumental, and accidental intent. Children attributed more hostile intent to disliked peers than to siblings and less hostile intent to friends than to siblings. Accidental and instrumental intent attributions were equally likely for friends and siblings but less common for disliked peers. Children attributed more hostile intent to older siblings, and more instrumental intent to laterborn siblings who were chronologically younger. Children's attributions of siblings' intent were related to both parents' and children's reports of the affective features of siblings' interactions. Results provide new insight into how children's construals of others' actions are grounded in the unique features of their relationships with particular interaction partners.     

Siblings as Confidants: Emotional Understanding, Relationship Warmth, and Sibling Self-Disclosure

Associations among (a) self-disclosures between early adolescent siblings, (b) emotional understanding, and (c) relationship warmth were investigated. Grade 5–6 children (M age = 11.5 years) were interviewed concerning the incidence of disclosures to closest-in-age siblings (20 = older, 20 = younger), feelings regarding disclosing (or not), and sibling relationship quality. Warmth was measured with the Sibling Relationship Questionnaire (Furman & Buhrmester, 1985) and emotional understanding was assessed with the Hypothetical Relationships Picture Task (adapted from Schneider, 1989, & Aquan-Assee, 1992). Hierarchical multiple regressions indicated self-disclosure was positively associated with feeling good about sharing and negatively associated with reports of not trusting or not receiving emotional support from their sibling. Sibling relationship warmth was a key characteristic associated with both emotional understanding and self-disclosure; female target children demonstrated greater emotional understanding. Warmth, but not emotional understanding, was associated with self-disclosure. Findings are discussed in light of the importance of links between affective relationships and children's social-emotional understanding.     

When Does Parents’ Differential Treatment Have Negative Implications for Siblings?

We compared the extent of parents' differential treatment (PDT) and girls' and boys' perceptions of parents' fairness in middle childhood and adolescence as a function of the gender constellation of the sibling dyad. Further, we examined links between PDT in three domains, parental warmth, parents' temporal involvement, and the allocation of household tasks, and both siblings' self esteem and positivity in the sibling relationship. Participants were mothers, fathers and both first- and secondborn siblings from 385 families. To collect information on siblings' family experiences and well-being, family members were interviewed individually in their homes. During the subsequent 2–3 weeks, 7 evening telephone interviews also were conducted; these focused on siblings' daily activities. Analyses revealed different patterns of PDT for siblings as a function of age and gender constellation, stronger links with self esteem and sibling positivity for perceptions of fairness than for PDT, and different patterns of association with self esteem and sibling relations across domains of PDT. We emphasize the importance of studying the processes through which PDT experiences have implications for siblings.     

Differential parenting and children's social understanding

In the current study, a curvilinear association was examined between differential parenting and children's social understanding as measured using standardized assessments and behavioral observations. Social understanding was comprised of theory‐of‐mind and behavior indicating understanding of others’ minds (i.e., cognitive sensitivity and internal state talk and reasoning during sibling interactions). Data came from a community sample of 372 children (51.6% males; M age = 5.57, SD = 0.77), their younger siblings (M age = 3.14, SD = 0.27), and their mothers who were observed in their homes. We hypothesized that in families with higher levels of differential parenting, both favored and disfavored older siblings would display poorer social understanding, but that disfavored children would be more negatively impacted. Results from a hierarchical regression analysis indicated an inverse linear effect, rather than a curvilinear relationship, between being favored by mother and siblings’ social understanding. Specifically, disfavored older children showed higher levels of social understanding when interacting with their favored younger sibling. This relationship remained significant after controlling for variables such as age, SES, and language. Findings suggest that differential parenting plays a role in children's ability to understand others.