Designing celebrity-endorsed behavioral interventions in conservation.

The use of celebrity endorsement in environmental conservation interventions aiming to influence human behavior has increased in recent decades. Although good practice in designing, implementing, and evaluating behavioral interventions is outlined in recent publications, guidance on developing conservation interventions with celebrity endorsement remains limited. To fill this gap, we devised a guide for decision-making relating to celebrity-endorsed behavioral interventions based on the behavioral, project design, and celebrity endorsement literatures.