Meaning:
HSP is short for the English term “highly sensitive person,” and “人群” means “a group of people.” A highly sensitive person (HSP) is someone who is thought to have an increased central nervous system sensitivity to physical, emotional or social stimuli. The term was first coined by psychologists Elaine Aron and Arthur Aron in the mid-1990s. Elaine Aron published her book “The Highly Sensitive Person” in 1996, and interest in the concept has continued to grow since then. High sensitivity is a personality trait that involves increased responsiveness to both positive and negative influences. The Arons also developed a highly sensitive person test, or a personality questionnaire, known as Aron’s Highly Sensitive Persons Scale (HSPS), to help people identify themselves as HSPs. Thought to make up roughly 20% of the general population, HSPs often have a rich and complex inner life, complete with deep thoughts and strong feelings that go with them, while they also may feel stressed under circumstances.
Example:
A: 你女朋友怎么今天闷闷不乐？
Nǐ nǚpéngyou zěnme jīntiān mènmèn búlè？
Why does your girlfriend look so unhappy today?
B: 没什么特别严重的，她是HSP人群，遇到不开心的事反应更强烈。
Méi shénme tèbié yánzhòng de，tā shì HSP rénqún，yùdào bù kāixīn de shì fǎnyīng gèng qiángliè。
Nothing really serious. She is one of those HSPs and would respond more strongly to setbacks than an average person.