Developmental Change in Sibling Support and School Commitment Across Adolescence

Area of Science:

• Developmental Psychology
• Family Studies
• Educational Psychology

Background:

• Adolescent school commitment typically declines during middle and high school years.
• Family factors influencing this decline are not fully understood.
• Sibling support is an under-explored family resource in adolescent academic engagement.

Purpose of the Study:

• To investigate sibling support as a predictor of school commitment in adolescents.
• To examine how sibling support changes over time (7th-10th grade).
• To determine if sibling gender influences the relationship between sibling support and school commitment.

Main Methods:

• Longitudinal study of 444 adolescents across 7th-10th grade.
• Assessed changes in sibling support and school commitment over time.
• Statistical analysis to identify predictors of school commitment.

Main Results:

• Sibling support increased linearly over time, while school commitment decreased and then stabilized.
• Sibling support positively predicted school commitment throughout the study period.
• The positive association between sibling support and school commitment was stronger when the sibling was a brother.

Conclusions:

• Sibling support acts as a protective factor, helping to mitigate declines in school commitment.
• Interventions promoting positive sibling relationships may support adolescent academic persistence.
• Understanding sibling dynamics, including gender, offers insights into maintaining school engagement.