Complex sentence: Psychiatrists who heard Ranucci during sessions diagnosed "immature and backward sexuality"; coupled with a need for company, this had led to, according to their report, some desire to take children and spend time with them.
Split into simpler sentences: Psychiatrists who heard Ranucci during sessions diagnosed him as "immature and backward sexuality". According to their report, coupled with a need for company, this had led to some desire to take children and spend time with them.