Psychological Stress as a Mediator in the Relationships Between Personality Characteristics and Eye-Blinking Behavior

Area of Science:

• Psychology
• Psychophysiology
• Behavioral Science

Background:

• Personality traits are known to influence stress responses.
• The link between personality, stress, and physiological markers like spontaneous blink rate (SBR) is underexplored.
• This study investigates the interplay between the Big-Five personality model, perceived stress, and blinking behavior.

Purpose of the Study:

• To examine the associations between neuroticism, extraversion, conscientiousness, perceived stress, and SBR.
• To test the hypothesis that perceived stress mediates the relationship between personality traits and blinking behavior.
• To explore personality's influence on physiological stress responses and blinking dynamics.

Main Methods:

• 86 participants completed the Big-Five Inventory (BFI-2) and Perceived Stress Scale (PSS-14).
• Spontaneous blink rate (SBR) was measured during a sustained reading task.
• Path analysis was employed to analyze direct and indirect effects.

Main Results:

• Higher neuroticism correlated with increased perceived stress and SBR, supporting the mediation hypothesis.
• Conscientiousness showed a negative association with perceived stress, which was linked to reduced blinking.
• Perceived stress significantly mediates the relationship between personality traits and blinking behavior.

Conclusions:

• Personality traits significantly influence physiological stress responses, as indicated by blinking behavior.
• Perceived stress acts as a crucial mediator linking personality and blinking dynamics.
• Findings offer insights into stress-related behaviors and potential biomarkers for psychological states.