{"p"=>"Drawing on psychoanalytic attachment theory and socioemotional wealth (SEW) theory, this study examines how an organizational attachment climate in family firms shapes environmental, social, and governance (ESG) performance through green creativity (GC). Grounded in developmental psychology, we define an organizational attachment climate as a collectively perceivable psychological context in which family members’ relatively stable attachment scripts are repeatedly enacted in ownership, governance, and managerial interactions and become institutionalized into shared habits about relational safety, trust boundaries, and interaction rules. Building on attachment logics at both individual and group levels, we construct a composite index of organizational attachment intensity (OAI) to capture the climate’s salience. Methodologically, we combine green patent data with executive resumes, use a large language model for named-entity recognition to extract structured career histories, and develop a more objective firm-level GC index along procedural mastery, motivational, and purposive dimensions. Empirical results reveal an inverted U-shaped effect of OAI on ESG performance. GC serves as a nonlinear mediator: OAI has an inverted U-shaped effect on GC, and GC exerts an inverted U-shaped effect on ESG. Heterogeneity analyses show the OAI–ESG inverted U-shape is significant under founder control but becomes insignificant after succession."}