Complex sentence: A recent 2015 study published by the Principles of Transgender Medicine and Practice, executive functioning in 20 youth transgender treated with puberty blockers compared to untreated trans youth, there was no difference in performance (Staphorsius et al, 2015).
Split into simpler sentences: A recent 2015 study published by the Principles of Transgender Medicine and Practice, observed the executive functioning in 20 youth transgender treated with puberty blockers compared to untreated trans youth. They found that there was no difference in performance (Staphorsius et al, 2015).