Psychophysiological reactivity in type A and B women during a rapid information processing task

Area of Science:

• Psychology
• Behavioral Medicine
• Psychophysiology

Background:

• The Type A behavior pattern is associated with cardiovascular reactivity.
• Need for control (NC) is a personality trait potentially linked to stress responses.
• Understanding these differences is crucial for stress management and health outcomes.

Purpose of the Study:

• To compare Type A and Type B women on information processing performance and psychophysiological reactivity.
• To investigate the role of 'need for control' in these responses.
• To explore psychological differences between Type A and Type B individuals.

Main Methods:

• Utilized a newly developed German questionnaire to assess 'need for control' (NC) and categorize participants into Type A and Type B.
• Employed a computer-controlled, monetarily reinforced, subject-paced information processing task.
• Measured cardiovascular (ECG, finger plethysmography) and noncardiovascular (EMG, skin conductance, respiration) psychophysiological reactivity.

Main Results:

• No significant differences in task performance were observed between Type A and Type B women.
• Type A women demonstrated significantly stronger vasoconstrictive responses compared to Type B women.
• Type A individuals reported higher levels of nervousness, irritability, and marginally higher depression, reactive aggressivity, and neuroticism.

Conclusions:

• Need for control (NC) and Type A/B classification differentiate psychophysiological stress responses, particularly vasoconstriction.
• Psychological differences in nervousness and irritability are pronounced between Type A and Type B individuals.
• Findings contribute to understanding the interplay of personality, stress, and physiological reactivity.