Student Engagement Declines across Adolescence: A Meta-Analysis of Longitudinal Studies - Jennifer E. Symonds; Jiesi Guo; Xin Tang; Katja Upadyaya; Junlin Yu; Natalie Vaccaro; Daniel Guigui; Sara Ponce; Niall Costello; Katariina Salmela-Aro (Review of Education, 2026)