High sensitivity, a personality trait formally known as Sensory Processing Sensitivity (SPS), is characterized by a heightened awareness of sensory input, emotions, and social situations. It is estimated that approximately 15-30% of the population possesses this trait, which manifests as deep thinking, creativity, and empathy, but can also lead to being more easily overwhelmed by strong stimuli or emotional situations. The trait was first introduced and extensively researched by Dr. Elaine N. Aron, a pioneering clinical psychologist and researcher. Her work has provided a foundational framework for understanding this neurotype, leading to the development of validated assessment tools and a growing body of evidence-based resources for individuals seeking to navigate life with high sensitivity.
The primary instrument for identifying high sensitivity is the Highly Sensitive Person (HSP) Scale, a self-report questionnaire developed by Dr. Elaine Aron and Dr. Arthur Aron in 1997. This initial scale consisted of 27 items rated on a 7-point Likert scale, measuring various dimensions of sensitivity including sensory processing, emotional sensitivity, social sensitivity, thinking sensitivity, and imagination sensitivity. A score of 14 or higher on this scale was indicative of a likely highly sensitive person. This tool has been instrumental in both clinical settings and personal self-discovery, offering individuals a means to understand their own experiences and providing a basis for identifying strategies to manage the challenges while leveraging the strengths associated with the trait.
In recent years, research has evolved to refine the measurement of high sensitivity. In 2024, researchers released the Highly Sensitive Person Revised (HSP-R) scale. This updated tool is shorter, consisting of 18 questions, and is designed to be more precise. The HSP-R aims to better identify and describe the different subcategories of sensitivity. Research has shown that high sensitivity is comprised of six main features, and individuals may score high in some areas while lower in others. The revised scale helps to unpack these nuances, measuring core aspects such as depth of processing, empathy, and overstimulation. This development sharpens the way sensitivity is studied and helps highly sensitive people better understand their specific patterns of experience. The availability of a modern, evidence-based scale also supports more accurate research moving forward, which directly benefits highly sensitive people seeking therapy, coaching, or workplace accommodations.
Dr. Elaine Aron continues to be an active voice and resource for highly sensitive people in 2025. Her contributions extend beyond foundational research to include contemporary media, updated self-tests, and professional training. Through her blog and the Comfort Zone newsletter, she provides current insights, reflections on recent research, and practical guidance on issues such as boundaries in relationships and the spiritual dimension of sensitivity. She is also working on a forthcoming book titled Spirituality Through a Highly Sensitive Lens. Her media presence, including appearances on podcasts and in documentaries, helps make her research accessible and relatable.
For individuals seeking to explore their sensitivity further, Dr. Aron’s website, hsperson.com, offers the official HSP self-test and the HSP-R scale. The site also provides related self-tests for High Sensitation Seeking (HSS) and for parents to identify sensitivity in children. Recognizing that personal understanding is often the first step, but that many benefit from professional support, Dr. Aron’s site includes a vetted directory of HSP-Knowledgeable Therapists, Coaches, and Medical Professionals. Practitioners listed in this directory have studied her work, completed specific trainings, or passed tests tied to her resources, offering a pathway to specialized, informed care.
The Foundation for the Study of Highly Sensitive Persons, co-founded by Dr. Aron, further supports the community by funding new studies, promoting education about sensitivity, and ensuring that research about highly sensitive people continues to grow and gain scientific credibility. This institutional support underscores the importance of an evidence-based approach to understanding and supporting high sensitivity.
In summary, high sensitivity is a well-researched trait with specific assessment tools and a growing body of professional support. Dr. Elaine Aron’s ongoing work provides updated resources, from the revised HSP-R scale to a network of trained professionals, enabling highly sensitive individuals to better understand themselves and access appropriate care. The evolution of assessment tools and the expansion of professional resources highlight a move towards more nuanced, individualized support for this population.
The Highly Sensitive Person Scale (HSP Scale)
The Highly Sensitive Person Scale (HSP Scale) is a self-report questionnaire designed to measure the degree of high sensitivity in adults. It was developed by Elaine Aron, Ph.D., and Arthur Aron, Ph.D., in 1997. The HSP Scale consists of 27 items, each of which is rated on a 7-point Likert scale. The items measure a variety of aspects of high sensitivity, including sensory processing sensitivity, emotional sensitivity, social sensitivity, thinking sensitivity, and imagination sensitivity. A score of 14 or higher on the HSP Scale indicates that a person is likely to be highly sensitive. High sensitivity is a personality trait that is estimated to occur in about 15-20% of the population. Highly sensitive people are often described as being deep thinkers, creative, and empathetic. They may also be more easily overwhelmed by sensory input, strong emotions, and social situations. The HSP Scale is a valuable tool for helping people to understand their own high sensitivity. It can also be used to help people to identify strategies for coping with the challenges of high sensitivity and to maximize their strengths.
Definition of High Sensitivity
High sensitivity is a personality trait that is characterized by a heightened awareness of sensory input, emotions, and social situations. Highly sensitive people are often described as being deep thinkers, creative, and empathetic.
The Revised Highly Sensitive Person Test (HSP-R)
The Revised Highly Sensitive Person Test by Dr. Elaine N. Aron was first published in 1996. It includes 27 statements with a checkbox adjacent to each and is featured in her book: “The Highly Sensitive Person: How to Thrive When the World Overwhelms You”. For decades, this free HSP test was the go-to scale for researchers and fellow Highly Sensitive People everywhere. However, recent research on the development of a comprehensive sensitivity questionnaire has led to the revised Highly Sensitive Person scale (HSP-R). It features 18 questions aimed at describing you well, with 7 responses ranging from “Not at All” to “Extremely”. Instructions ask that test takers skip the questions they’re not sure about for a better result. Research has shown there are six main features of High Sensitivity and Highly Sensitive People can measure high in some and lower in others.
In 2024, researchers released the HSP-R (Highly Sensitive Person Revised) scale – a shorter, more precise tool that identifies subcategories of sensitivity, such as depth of processing, social sensitivity, and overstimulation. This update sharpens the way sensitivity is studied and helps HSPs better understand their own patterns. Having a modern, evidence-based scale also means more accurate research moving forward. This directly benefits Highly Sensitive People seeking therapy, coaching, or workplace accommodations.
Dr. Elaine Aron's Ongoing Contributions in 2025
Dr. Elaine Aron continues to support Highly Sensitive People through her blog and Comfort Zone newsletter, updated self-tests (including the HSP-R), professional training, live events, and her contributions to films and podcasts. Her May 2025 blog post highlighted recent studies while previewing her upcoming book Spirituality Through a Highly Sensitive Lens. This points to a direction she’s taking now, helping HSPs explore the spiritual dimension of sensitivity. An August 2025 entry explores the revised Highly Sensitive Person test, explains the shortcomings of the original 27-item scale and highlights the benefits of the new, shorter scale. Earlier posts unpack timely issues, such as boundaries in relationships, dive deep into new research findings, and explore Dr. Aron’s take on sensitivity and spirituality. For Highly Sensitive People who want a steady, digestible source of insight, her blog and newsletter deliver a connection that feels both personal and practical.
One of the ways Dr. Elaine Aron reaches Highly Sensitive People today is through media you’re already consuming: podcasts, YouTube interviews, and documentary films. These platforms make her research relatable and easy to understand without the jargon of academic papers. In recent years, Dr. Aron has appeared on well-known shows, like the Good Life Project and the recently launched Men with S.T.Y.L.E. podcast.
Professional Support and Resources
While books and blog posts provide knowledge, sometimes the next step is working with someone one-on-one. Dr. Elaine Aron’s site makes this easier through a vetted directory of HSP-Knowledgeable Therapists, Coaches, and Medical Professionals. Practitioners who appear here have studied her work, often completed specific trainings, or passed tests tied to her resources.
The Foundation for the Study of Highly Sensitive Persons, co-founded by Dr. Aron, funds new studies, promotes education about sensitivity, and ensures that research about Highly Sensitive People continues to grow and gain scientific credibility.
For many people, this recognition feels like the missing puzzle piece. Where to Start: Take the HSS self-test and explore current HSS-focused workshops & courses listed on hsperson.com.
Wrapping Up: Here’s How to Use Dr. Elaine Aron’s Work in 2025 Dr. Elaine Aron’s influence didn’t end with the 1990s research or her bestselling books on the Highly Sensitive Person trait (and how it manifests in various life stages). She remains a guiding voice for Highly Sensitive People today, offering resources that are current, accessible, and practical. If you’re looking for next steps, here are three to try right now: - Take the updated self-tests, including the HSP-R scale, to see where you fall on the spectrum and which traits stand out. - Subscribe to Dr. Elaine Aron’s newsletter at hsperson.com and browse the archives for posts that resonate with your current journey.
Conclusion
High sensitivity, or Sensory Processing Sensitivity, is a well-defined personality trait with established assessment tools and a dedicated body of research led by Dr. Elaine N. Aron. The evolution from the original 27-item HSP Scale to the more nuanced HSP-R reflects a growing understanding of the trait's multidimensional nature. For individuals who identify as highly sensitive, a range of resources is available, from self-assessment tests to professional directories of therapists and coaches knowledgeable about this trait. The ongoing work of Dr. Aron and the Foundation for the Study of Highly Sensitive Persons continues to advance scientific understanding and provide practical support, helping highly sensitive people navigate their experiences and leverage their unique strengths.