Reported physical symptoms elicited by unpredictable events and the type A coronary-prone behavior pattern

Area of Science:

• Psychology
• Health Psychology
• Behavioral Medicine

Background:

• Unpredictable and uncontrollable events are linked to various illnesses.
• The Type A behavior pattern, characterized by competitiveness and impatience, is associated with coronary heart disease.
• Previous research suggests a connection between stress, behavior patterns, and physical symptom reporting.

Purpose of the Study:

• To investigate the causal link between unpredictable aversive events and physical symptom reporting.
• To examine how the Type A coronary-prone behavior pattern influences symptom reporting in relation to task completion.
• To compare symptom reporting under conditions of unpredictable noise, predictable noise, and ambient noise.

Main Methods:

• Participants were Type A and Type B women.
• Symptom reporting was assessed in the middle and at the end of listening to unpredictable, predictable, or ambient noise.
• A laboratory setting was used to control environmental stimuli.

Main Results:

• Unpredictable noise led to significantly more symptom reporting than predictable noise.
• Predictable noise resulted in more symptom reporting than ambient noise.
• Type A individuals reported fewer symptoms when they believed the task was ongoing compared to when they thought it was completed; Type B individuals did not exhibit this difference.

Conclusions:

• Both hypotheses were supported: unpredictable events increase symptom reporting, and Type A behavior modifies this reporting based on perceived task completion.
• Findings suggest that the perception of control and task continuity influences how individuals, particularly Type A personalities, experience and report physical symptoms.
• The study highlights the psychological modulation of physical symptoms and has implications for understanding stress-related illnesses and behavioral interventions.