Focus on CSR performance, CSR assurance and subpillars of CSR reporting (e.g. biodiversity, circular economy, climate)

Sustainability expertise of AC members (based on prior practical experiences and/or theoretical/academic background)

Connectivity between AC and CSR board committees (interactions; overlaps of members)

AC compensation (e.g. equity-based, sustainability-related targets)

Automated text analyses of CVs of AC members and business reports to gather innovative AC and CSR variables

Endogeneity checks by quasi-natural experiments (e.g. difference-in-difference-approach and 2SLS/IV)

Bidirectional and nonlinear relationships, e.g. critical mass of AC variables

Country effects (e.g. code versus case law, CSR performance, cultural dimensions)