To conduct this research, a mixed-methods approach aligned with the HM Treasury Magenta Book: Central Government Guidance on Evaluation (2020) was developed.
Er mwyn cynnal yr ymchwil hwn, datblygwyd dull cymysg a oedd yn cyd-fynd â Llyfr Magenta Trysorlys EF: Canllaw Llywodraeth Ganolog ar Werthuso (2020).