Intellectual functioning may impact on psychological functioning. It is unfortunate, therefore, that the study did not give the young people IQ tests before and after GnRHa treatment. Where such tests have been carried out, the results suggest that IQ is lower after treatment (1, 2, 3).
Peter Hayes
(1) Mul, D., Versluis-den Bieman, H. J. M., Slijper, F. M. E., Oostdijk, W., Waelkens, J. J. J., and Drop, S. L. S. (2001). Psychological assessments before and after treatment of early puberty in adopted children. Acta Paediatr. 90, 965–971. doi: 10.1111/j.1651-2227.2001.tb01349.x
(2) Wojniusz, S., Callens, N., Sütterlin, S., Andersson, S., De Schepper, J., Gies, I., et al. (2016). Cognitive, emotional, and psychosocial functioning of girls treated with pharmacological puberty blockage for idiopathic central precocious puberty. Front. Psychol. 7:1053. doi: 10.3389/fpsyg.2016.01053
(3) Hayes, P. (2017). Commentary: Cognitive, Emotional, and Psychosocial Functioning of Girls Treated with Pharmacological Puberty Blockage for Idiopathic Central Precocious Puberty. Front. Psychol. 8:44. doi: 10.3389/fpsyg.2017.00044