An investigation testing the perceptual advantage of Sensory Processing Sensitivity and its associations with the Big Five personality traits

Abstract

This study investigated whether sensory processing sensitivity (SPS) is associated with a perceptual advantage, rather than just heightened brain, emotional and behavioural reactivity. Participants (N = 222) were tested on detection and identification of visually degraded words at three levels of difficulty, and completed the Highly Sensitive Person Scale (HSPS) and the Big Five Inventory. The positive subscale of the HSPS predicted both the detection and identification of visually degraded stimuli, and beyond the Big Five traits. This contradicts claims that SPS is solely a combination of Big Five traits. Importantly, the perceptual advantage for highly sensitives may balance the disadvantages of being easily overwhelmed by stimuli and indicates separate evolutionary advantages and strategies for high and low SPS humans and other mammals.