“…This was covered thoroughly in the 2011 paper under the headings of self-rating questionnaires [91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107], expressed emotion [108,109], interviews [110,111,112], observation [71,113,114,115,116,117,118,119], and neuro-scientific investigations. Almost all publications during the last 5 years have used self-rating questionnaires.…”