 GTAs are paid professionals and hence introducing this method of teaching has financial implications for Universities. Unless it is proven to be worthwhile it is unlikely that academic institutions will introduce and maintain GTA programs. One UK study did show that those who had been trained with a GTAs and pelvic models were significantly better than those who had been trained with pelvic models alone. However, in this study the GTA training was supplementary to the normal curriculum so the amount of teaching rather than the style of teaching may have acted as a confounding factor. Therefore, a large randomised trial of trainees on the Obstetrics and Gynaecology OG programme comparing those given an initial teaching session on a pelvic model and those taught by GTAs is needed to assess the effectiveness of GTAs on confidence and competence of the students by the end of the training programme is needed. 