Socially anxious individuals perceive social interactions as threatening to their safety and consequently exhibit specific physiological and psychological anxiety reactions, referred to as stress responses. Recent studies in patients with social anxiety have shown that pharmacologically induced cortisol increase reduced the psychological stress reactivity to a socio-evaluative stressor. These results suggest a potential mechanism by which cortisol and the psychological stress response interact. Thus, we hypothesized that the relationship between social anxiety and subjective stress would be mediated, or moderated by endogenous cortisol increase during stress. Specially, we hypothesize that cortisol increase acts as a buffer for the psychological stress response. A sample of 120 healthy participants underwent the Trier Social Stress Test for groups (TSST-G; von Dawans, Kirschbaum, & Heinrichs, 2011). Although, we found a direct relationship of social anxiety with both the perceived subjective stress, and the cortisol increase, neither our mediation, nor moderation hypothesis were confirmed.
Table of Contents
1. Introduction
1.1 The Present Study
2. Method
2.1 Recruiting and Participants
2.2 Experimental Procedure
2.3 Measure of Social Anxiety (Independent Variable)
2.4 Measure of Subjective Stress (Dependent Variable)
2.5 Measure of Cortisol Increase (Proposed Mediator/ Moderator Variable)
2.6 Statistical Analyses
3. Results
3.1 Manipulation Check of Stress Induction
3.2 Correlational Analyses
3.2.1 Correlation between social anxiety and subjective stress
3.2.2 Correlation between social anxiety and cortisol increase
3.2.3 Correlation between cortisol increase and subjective stress
3.2.4 Intercorrelations
3.2.5 Correlations between baseline measures and other variables
3.3 Mediation of Subjective Stress
3.4 Moderation of Subjective Stress
4. Discussion
Research Objectives and Themes
This study investigates the relationship between social anxiety, subjective stress perception, and endocrine response (salivary cortisol) under socio-evaluative stress conditions. The primary objective is to determine whether cortisol increase serves as a mediator or moderator between social anxiety and the psychological stress response in healthy individuals.
- Analysis of psychological stress reactivity in socially anxious individuals
- Evaluation of the hypothalamic-pituitary-adrenal (HPA) axis activity during social stress
- Application of the Trier Social Stress Test for groups (TSST-G)
- Testing of mediation and moderation models regarding cortisol and perceived stress
Excerpt from the Book
The Present Study
The present study differs from the previous studies, which have examined the psychological and endocrine responses to a standardized socio-evaluative stressor in socially anxious participants in one important aspect. To our knowledge, this is the first study which investigates whether the endogenous stress-induced release of cortisol (i.e., no administration of glucocorticoides) influences perceived subjective stress in a general population (i.e., non-clinical sample).
Following the brief review of the literature, our first hypothesis is that social anxiety leads to an increase in subjective stress during socio-evaluative stress. We expect that participants with higher social anxiety would show a greater increase in perceived subjective stress during a stress test. Second, we want to go beyond the previous findings and test for a possible mechanism. We hypothesize that the relationship between social anxiety and subjective stress is mediated by cortisol increase during socio-evaluative stress. Specially, we hypothesize that cortisol increase acts as a buffer for the psychological stress response. This translates into a negative correlation between social anxiety and the psychological stress response with cortisol increase. We expect that social anxiety would lead to a decrease in cortisol, which is responsible for the increase of subjective stress.
Chapter Summaries
Introduction: Provides a theoretical background on social anxiety, stress responses, and the role of the HPA axis in regulating physiological changes.
Method: Describes the participant recruitment, the standardized group-based stress induction procedure (TSST-G), and the specific measurement tools for social anxiety, stress, and cortisol.
Results: Reports the statistical findings, confirming the success of the stress induction and presenting correlation, mediation, and moderation analyses.
Discussion: Interprets the findings regarding the lack of confirmed mediation/moderation hypotheses and discusses the implications of social anxiety on cortisol reactivity.
Keywords
Social anxiety, Subjective stress, Salivary cortisol, Trier Social Stress Test, TSST-G, HPA axis, Socio-evaluative stress, Mediation, Moderation, Psychological stress response, Endocrine system, Psychopathology, Stress reactivity, Non-clinical sample, Cortisol increase.
Frequently Asked Questions
What is the core focus of this research?
The research examines the interplay between social anxiety and the physiological and psychological stress responses in a non-clinical sample of healthy participants.
What are the primary thematic areas covered?
The work covers social interaction anxiety, the HPA axis, cortisol release mechanisms, and subjective stress measurement during laboratory-induced socio-evaluative stress.
What is the central research question?
The study asks whether the endogenous cortisol increase during social stress acts as a mediator or moderator for the relationship between social anxiety and perceived subjective stress.
Which scientific methodology is employed?
The study uses the Trier Social Stress Test for groups (TSST-G) for stress induction and applies Pearson correlational analyses as well as multiple regression models to test mediation and moderation hypotheses.
What is addressed in the main part of the work?
The main section details the experimental design, data collection via saliva samples and visual analog scales, and the statistical validation of the study's hypotheses using bootstrapping and OLS regression.
Which keywords best characterize this work?
Key terms include social anxiety, salivary cortisol, TSST-G, mediation, moderation, stress reactivity, and subjective stress.
Why did the study fail to confirm the mediation hypothesis?
The results showed that while social anxiety was related to both subjective stress and cortisol levels, the cortisol increase did not statistically predict subjective stress, nor did it reduce the direct effect of social anxiety on perceived stress.
Did the baseline cortisol levels differ based on social anxiety?
No, the study replicated findings showing that there was no significant relationship between social anxiety and baseline cortisol levels prior to the stress induction.
- Quote paper
- Alexandra Schulz (Author), 2011, The relationship between social anxiety, subjective stress and salivary cortisol, Munich, GRIN Verlag, https://www.grin.com/document/215275
