A systematic review published in 2019 by the Campbell Collaboration found little evidence of the effectiveness of continuing professional development (CPD).Filges, T, Torgerson, C, Gascoine, L, Dietrichson, J, Nielsen, C, Viinholt, BA. Effectiveness of continuing professional development training of welfare professionals on outcomes for children and young people: A systematic review. Campbell Systematic Reviews. 2019; 15:e1060. https://doi.org/10.1002/cl2.1060
