According to Elaine N. Aron and colleagues as well as other researchers , highly sensitive people , which would represent about a fifth of the population , process sensory data much more deeply and thoroughly due to a biological difference in their nervous systems . According to Elaine N. Aron and colleagues as well as other researchers , highly sensitive people , who comprise about a fifth of the population , may process sensory data much more deeply and thoroughly due to a biological difference in their nervous systems .