Relationship between sensory-processing sensitivity and age in a large cross-sectional Japanese sample

Area of Science:

• Psychology
• Neuroscience
• Human Development

Background:

• Sensory-processing sensitivity (SPS) is a trait of individual differences in sensory information processing.
• Previous research on SPS has not extensively explored developmental changes across the adult lifespan.
• Understanding age-related shifts in SPS is crucial for developmental psychology and personalized well-being strategies.

Purpose of the Study:

• To investigate the relationship between sensory-processing sensitivity and age in a Japanese adult population.
• To identify specific factors of SPS that exhibit age-related variations.
• To determine if sex influences the age-related changes in sensory-processing sensitivity.

Main Methods:

• A cross-sectional study involving 1,983 Japanese adults aged 20-69.
• Utilized the Japanese version of the 19-item Highly Sensitive Person Scale to assess SPS.
• Hierarchical multiple regression analysis was employed to examine age and sex effects.

Main Results:

• A linear decrease in low sensory threshold and ease of excitation was observed with increasing age.
• A linear increase in aesthetic sensitivity was found to correlate with advancing age.
• No significant sex differences were detected in the age-related changes of SPS factors.

Conclusions:

• Sensory-processing sensitivity exhibits distinct age-related trajectories in adults, with some facets declining and others enhancing.
• These developmental shifts in SPS are consistent across both male and female participants.
• The findings highlight the dynamic nature of sensory processing throughout adulthood, influenced by age but not sex.