Interventions are evidence-based and developed in consultation with experts in a variety of disciplines - in the field of language planning as well as other behaviour change disciplines.
Gwneir hynny ar sail tystiolaeth a thrwy ymgynghori ag arbenigwyr mewn amryfal ddisgyblaethau - ym maes cynllunio ieithyddol ac mewn meysydd newid ymddygiad eraill.