Complex sentence: Massachusetts psychologist Robert Mendoza, who had been hired by Rader's court-appointed public defenders to conduct a psychological evaluation for Rader and determine if an insanity-based defense might be viable, conducted an interview after Rader pled guilty on June 27.
Split into simpler sentences: Massachusetts psychologist Robert Mendoza was hired by Rader's court-appointed public defenders to conduct a psychological evaluation for Rader and determine if an insanity-based defense might be viable. He conducted an interview after Rader pled guilty on June 27.