Original sentence: Furthermore, children who have been sexually abused show measurable negative changes in brain functioning and development  A study by Mark Gilbertson, found that individuals with a smaller hippocampal volume are more disposed to the development of PTSD
Edited sentence: Furthermore, children who have been sexually abused show measurable negative changes in brain functioning and development  A study by Mark Gilbertson, however, indicates a different cause-and-effect, i.that individuals with a smaller hippocampal volume are more disposed to the development of PTSD