" The first published studies my husband and I did generated the self-test you have in this book and a slightly different version especially for research, called the Highly Sensitive Person (HSP) Scale. This research was also intended to demonstrate that high sensitivity is not the same as introversion or “neuroticism” (professional jargon for a tendency to be depressed or excessively anxious). "
― Elaine N. Aron , The Highly Sensitive Person: How to Thrive When the World Overwhelms You