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Gehrig TW, Berk LS, Dudley RI, Smith JA, Gharibvand L, Lohman EB. The feigned annoyance and frustration test to activate the sympathoadrenal medullary system. Compr Psychoneuroendocrinol 2024; 18:100232. [PMID: 38596409 PMCID: PMC11002885 DOI: 10.1016/j.cpnec.2024.100232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/25/2024] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
When perceived as threatening, social interactions have been shown to trigger the sympathoadrenal medullary system as well as the hypothalamic-pituitary-adrenal axis resulting in a physiologic stress response. The allostatic load placed on human health and physiology in the context of acute and chronic stress can have profound health consequences. The purpose of this study was to develop a protocol for a lab-based stress stimulus using social-evaluative threat. While several valid, stress-stimulating protocols exist, we sought to develop one that triggered a physiologic response, did not require significant lab resources, and could be completed in around 10 min. We included 53 participants (29 men and 24 women) and exposed them to a modified version of the Stroop Color-Word Interference Task during which the participants were made to feel they were performing the task poorly while the lead researcher feigned annoyance and frustration. After exposure to this Feigned Annoyance and Frustration (FAF) Test, both the men and women in this study demonstrated a statistically significant and clinically meaningful increase in subjective stress on the visual analog scale. Additionally, the men in this study demonstrated a statistically significant increase in heart rate and salivary α-amylase concentrations after exposure to the test. The women in this study did not demonstrate a statistically significant increase in the physiologic stress biomarkers. This protocol for the FAF Test shows promise to researchers with limited time and resources who are interested in experimentally activating the sympathoadrenal medullary system.
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Affiliation(s)
- Ted W. Gehrig
- Loma Linda University School of Allied Health Professions Department of Physical Therapy, 24951 N. Circle Dr., A-620, Loma Linda, CA, 92350, USA
| | - Lee S. Berk
- Loma Linda University School of Allied Health Professions, And School of Medicine, 24951 N. Circle Dr., A-620, Loma Linda, CA, 92350, USA
| | - Robert I. Dudley
- Loma Linda University School of Allied Health Professions Department of Physical Therapy, 24951 N. Circle Dr., A-620, Loma Linda, CA, 92350, USA
| | - Jo A. Smith
- Department of Physical Therapy, Chapman University, 9401 Jeronimo Rd., Irvine, CA, 92618, USA
| | - Lida Gharibvand
- Loma Linda University School of Allied Health Professions, 24951 N. Circle Dr., A-620, Loma Linda, CA, 92350, USA
| | - Everett B. Lohman
- Loma Linda University School of Allied Health Professions Department of Physical Therapy, 24951 N. Circle Dr., A-620, Loma Linda, CA, 92350, USA
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Bauerly KR, Mefferd A. The effects of attentional focus on speech motor control in adults who stutter with and without social evaluative threat. J Fluency Disord 2023; 77:105995. [PMID: 37494845 DOI: 10.1016/j.jfludis.2023.105995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 06/25/2023] [Accepted: 07/16/2023] [Indexed: 07/28/2023]
Abstract
PURPOSE We sought to investigate the effects of cued attentional shifts on speechmotor control in adults who stutter (AWS) and adults who do not stutter (ANS) when speaking under low and high social stress conditions. METHOD Thirteen AWS' and 10 ANS' lip aperture (LA) and posterior tongue (PT) movements were assessed under a Cued-Internal and Cued-External attentional focus condition with and without social stress induction (i.e. speaking to an audience). Skin conductance levels were used to measure a stress response. Speech motor control was assessed by measuring movement duration and variability of movement for LA and PT using the spatial temporal index (STI). RESULTS A significant Group x Condition interaction was found for LA STI. Post-hoc comparisons indicated AWS' LA STI significantly decreased under Cued External Focus conditions during both low and high social stress. No significant Group x Condition interaction was found for PT STI. AWS showed significantly slower tongue movements (PT) across all low and high social stress conditions; however, there was no significant Group x Condition interaction for PT or LA. DISCUSSION Findings yield preliminary insights into the role of attentional focus on speech motor control when speaking during high social stress. Theoretical and clinical implications are discussed.
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Affiliation(s)
- Kim R Bauerly
- Department of Communication Sciences and Disorders, University of Vermont, Burlington, VT, USA.
| | - Antje Mefferd
- Department of Hearing and Speech Sciences, Vanderbilt University Medical Center, Nashville, TN, USA
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Murray RJ, Apazoglou K, Celen Z, Dayer A, Aubry JM, Ville DVD, Vuilleumier P, Piguet C. Maladaptive emotion regulation traits predict altered corticolimbic recovery from psychosocial stress. J Affect Disord 2021; 280:54-63. [PMID: 33202338 DOI: 10.1016/j.jad.2020.09.122] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 08/14/2020] [Accepted: 09/28/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND Adaptive recovery from stress promotes healthy cognitive affective functioning, whereas maladaptive recovery is linked to poor psychological outcomes. Neural regions, like the anterior cingulate and hippocampus, play critical roles in psychosocial stress responding and serve as hubs in the corticolimbic neural system. To date, however, it is unknown how cognitive emotion regulation traits (cER), adaptive and maladaptive, influence corticolimbic stress recovery. Here, we examined acute psychosocial stress neural recovery, accounting for cER. METHODS Functional neuroimaging data were collected while forty-seven healthy participants performed blocks of challenging, time-sensitive, mental calculations. Participants immediately received performance feedback (positive/negative/neutral) and their ranking, relative to fictitious peers. Participants rested for 90 seconds after each feedback, allowing for a neural stress recovery period. Collected before scanning, cER scores were correlated with neural activity during each recovery condition. RESULTS Negative feedback recovery yielded increased activity within the dorsomedial prefrontal cortex and amygdala, but this effect was ultimately explained by maladaptive cER (M-cER), like rumination. Isolating positive after-effects (i.e. positive > negative recovery) yielded a significant positive correlation between M-cER and the anterior cingulate, anterior insula, hippocampus, and striatum. CONCLUSIONS We provide first evidence of M-cER to predict altered neural recovery from positive stress within corticolimbic regions. Positive feedback may be potentially threatening to individuals with poor stress regulation. Identifying positive stress-induced activation patterns in corticolimbic neural networks linked to M-cER creates the possibility to identify these neural responses as risk factors for social-emotional dysregulation subsequent to rewarding social information, often witnessed in affective disorders, like depression.
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Affiliation(s)
- Ryan J Murray
- Psychiatry Department, Faculty of Medicine, University of Geneva, Campus Biotech, 1202 Geneva, Switzerland.
| | - Kalliopi Apazoglou
- Psychiatry Department, Faculty of Medicine, University of Geneva, Campus Biotech, 1202 Geneva, Switzerland; Neuroscience Department, Laboratory for Behavioral Neurology and Imaging of Cognition, Campus Biotech, 1202 Geneva, Switzerland
| | - Zeynep Celen
- Psychiatry Department, Faculty of Medicine, University of Geneva, Campus Biotech, 1202 Geneva, Switzerland
| | - Alexandre Dayer
- Psychiatry Department, Faculty of Medicine, University of Geneva, Campus Biotech, 1202 Geneva, Switzerland; Mood Disorder Unit, Psychiatric Specialties Service, Geneva University Hospital, 1201 Geneva, Switzerland
| | - Jean-Michel Aubry
- Psychiatry Department, Faculty of Medicine, University of Geneva, Campus Biotech, 1202 Geneva, Switzerland; Mood Disorder Unit, Psychiatric Specialties Service, Geneva University Hospital, 1201 Geneva, Switzerland
| | - Dimitri Van De Ville
- Medical Image Processing Laboratory, Center for Neuroprosthetics, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), Campus Biotech, 1202 Geneva, Switzerland; Department of Radiology and Medical Informatics, University of Geneva, 1211 Geneva, Switzerland
| | - Patrik Vuilleumier
- Neuroscience Department, Laboratory for Behavioral Neurology and Imaging of Cognition, Campus Biotech, 1202 Geneva, Switzerland
| | - Camille Piguet
- Psychiatry Department, Faculty of Medicine, University of Geneva, Campus Biotech, 1202 Geneva, Switzerland; Mood Disorder Unit, Psychiatric Specialties Service, Geneva University Hospital, 1201 Geneva, Switzerland
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Phan JM, Schneider E, Peres J, Miocevic O, Meyer V, Shirtcliff EA. Social evaluative threat with verbal performance feedback alters neuroendocrine response to stress. Horm Behav 2017; 96:104-115. [PMID: 28919553 PMCID: PMC5753599 DOI: 10.1016/j.yhbeh.2017.09.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 09/11/2017] [Accepted: 09/12/2017] [Indexed: 12/19/2022]
Abstract
Laboratory stress tasks such as the Trier Social Stress Test (TSST) have provided a key piece to the puzzle for how psychosocial stress impacts the hypothalamic-pituitary-adrenal axis, other stress-responsive biomarkers, and ultimately wellbeing. These tasks are thought to work through biopsychosocial processes, specifically social evaluative threat and the uncontrollability heighten situational demands. The present study integrated an experimental modification to the design of the TSST to probe whether additional social evaluative threat, via negative verbal feedback about speech performance, can further alter stress reactivity in 63 men and women. This TSST study confirmed previous findings related to stress reactivity and stress recovery but extended this literature in several ways. First, we showed that additional social evaluative threat components, mid-task following the speech portion of the TSST, were still capable of enhancing the psychosocial stressor. Second, we considered stress-reactive hormones beyond cortisol to include dehydroepiandrosterone (DHEA) and testosterone, and found these hormones were also stress-responsive, and their release was coupled with one another. Third, we explored whether gain- and loss-framing incentive instructions, meant to influence performance motivation by enhancing the personal relevance of task performance, impacted hormonal reactivity. Results showed that each hormone was stress reactive and further had different responses to the modified TSST compared to the original TSST. Beyond the utility of showing how the TSST can be modified with heightened social evaluative threat and incentive-framing instructions, this study informs about how these three stress-responsive hormones have differential responses to the demands of a challenge and a stressor.
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Edmiston EK, Jones RM, Corbett BA. Physiological Response to Social Evaluative Threat in Adolescents with Autism Spectrum Disorder. J Autism Dev Disord 2016; 46:2992-3005. [PMID: 27318810 DOI: 10.1007/s10803-016-2842-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The Trier Social Stress Test (TSST) was employed to study response to social evaluative threat in male adolescents with Autism Spectrum Disorder (ASD, n = 21) and typical development (n = 13). Participants wore a mobile electrocardiogram to collect heart rate data. There were significant group effects on respiratory sinus arrhythmia (RSA), a measure of parasympathetic nervous system function, with lower values in ASD (F = 4.97). Bivariate correlations also showed a significant relationship between parent reports of social problems and RSA response to the TSST (r = -0.586). These findings suggest that autonomic dysregulation may contribute to social deficits in adolescents with ASD.
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Arch JJ, Landy LN, Brown KW. Predictors and moderators of biopsychological social stress responses following brief self-compassion meditation training. Psychoneuroendocrinology 2016; 69:35-40. [PMID: 27017431 DOI: 10.1016/j.psyneuen.2016.03.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 02/17/2016] [Accepted: 03/16/2016] [Indexed: 10/22/2022]
Abstract
Arch et al. (2014) demonstrated that brief self-compassion meditation training (SCT) dampened sympathetic (salivary alpha-amylase) and subjective anxiety responses to the Trier Social Stress Test (TSST), relative to attention and no-instruction control conditions. The present study examined baseline predictors and moderators of these SCT intervention effects. Baseline characteristics included two stress vulnerability traits (social anxiety and rumination) and two potential resiliency traits (non-attachment and self-compassion). We investigated how these traits moderated the effects of SCT on response to the TSST, relative to the control conditions. We also tested how these individual differences predicted TSST responses across conditions in order to uncover characteristics that confer increased vulnerability and resiliency to social stressors. Trait non-attachment, rumination (for sympathetic TSST response only), and social anxiety (for subjective TSST response only) interacted with training condition to moderate TSST responses such that following SCT, lower attachment and lower social anxiety predicted lower TSST stress responses, relative to those scoring higher on these traits. In contrast, trait self-compassion neither moderated nor predicted responses to the TSST. Thus, although SCT had robust effects on buffering stress across individuals with varying levels of trait self-compassion, other psychological traits enhanced or dampened the effect of SCT on TSST responses. These findings support the importance of examining the role of relevant baseline psychological traits to predict sympathetic and subjective responses to social evaluative threat, particularly in the context of resiliency training.
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Affiliation(s)
- Joanna J Arch
- Department of Psychology and Neuroscience, University of Colorado Boulder, 345 UCB Muenzinger, Boulder, CO 80309-0345, United States.
| | - Lauren N Landy
- Department of Psychology and Neuroscience, University of Colorado Boulder, 345 UCB Muenzinger, Boulder, CO 80309-0345, United States.
| | - Kirk Warren Brown
- Department of Psychology, Virginia Commonwealth University, 806 West Franklin Street, Richmond, VA 23284-2018, United States.
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Boyle NB, Lawton C, Arkbåge K, West SG, Thorell L, Hofman D, Weeks A, Myrissa K, Croden F, Dye L. Stress responses to repeated exposure to a combined physical and social evaluative laboratory stressor in young healthy males. Psychoneuroendocrinology 2016; 63:119-27. [PMID: 26441230 DOI: 10.1016/j.psyneuen.2015.09.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/22/2015] [Accepted: 09/22/2015] [Indexed: 12/25/2022]
Abstract
Repeated exposure to homotypic laboratory psychosocial stressors typically instigates rapid habituation in hypothalamic-pituitary-adrenal (HPA) axis-mediated stress responses in humans. However, emerging evidence suggests the combination of physical stress and social evaluative threat may be sufficient to attenuate this response habituation. Neuroendocrine, cardiovascular and subjective stress responses following repeated exposure to a combined physical and social evaluative stress protocol were assessed to examine the habituation response dynamic in this context. The speech task of the Trier social stress test (TSST; Kirschbaum et al., 1993) and the socially evaluated cold pressor task (SECPT; Schwabe et al., 2008) were administered in a combined stressor protocol. Salivary cortisol, cardiovascular and subjective stress responses to a non-stress control and repeat stressor exposure separated by six weeks were examined in males (N=24) in a crossover manner. Stressor exposure resulted in significant elevations in all stress parameters. In contrast to the commonly reported habituation in cortisol response, a comparable post-stress response was demonstrated. Cortisol, heart rate and subjective stress responses were also characterised by a heightened response in anticipation to repeated stress exposure. Blood pressure responses were comparatively uniform across repeated exposures. Findings suggest a combined physical and social evaluative stressor is a potentially useful method for study designs that require repeated presentation of a homotypic stressor.
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Affiliation(s)
- N B Boyle
- School of Psychology, University of Leeds, LS2 9JT, UK.
| | - C Lawton
- School of Psychology, University of Leeds, LS2 9JT, UK
| | - K Arkbåge
- Arla Strategic Innovation Centre, Arla Foods, Stockholm, Sweden
| | - S G West
- Department of Biobehavioral Health, Pennsylvania State University, USA
| | - L Thorell
- Arla Strategic Innovation Centre, Arla Foods, Stockholm, Sweden
| | - D Hofman
- School of Psychology, University of Leeds, LS2 9JT, UK
| | - A Weeks
- School of Psychology, University of Leeds, LS2 9JT, UK
| | - K Myrissa
- School of Psychology, University of Leeds, LS2 9JT, UK
| | - F Croden
- School of Psychology, University of Leeds, LS2 9JT, UK
| | - L Dye
- School of Psychology, University of Leeds, LS2 9JT, UK
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Cheetham TJ, Turner-Cobb JM. Panel manipulation in social stress testing: The Bath Experimental Stress Test for Children (BEST-C). Psychoneuroendocrinology 2016; 63:78-85. [PMID: 26422711 DOI: 10.1016/j.psyneuen.2015.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 08/20/2015] [Accepted: 09/14/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Whilst acute stress paradigms in adults make use of adult panel members, similar paradigms modified for child participants have not manipulated the panel. Most work has utilised an audience of adult confederates, regardless of the age of the population being tested. The aim of this study was to trial a social stress test for children that provided a meaningful environment using age-matched child peers as panel actors. METHODS Thirty-three participants (7-11 years) underwent the Bath Experimental Stress Test for Children (BEST-C). Based on the Trier Social Stress Test (TSST), it comprises a shortened six-minute public speaking task and four-minute maths challenge. It differs from previous stress tests by using age-matched children on the panel, pre-recorded and presented as a live feed, and includes an expanded manipulation check of subjective experience. Salivary cortisol was assessed at four time points, pre-post stress testing; life events, daily hassles and coping strategies were measured through questionnaires. A simple numerical coding scheme was applied to post-test interview data. RESULTS The BEST-C generated a typical stress and adaptation response in salivary cortisol (p=.032). Age and gender differences were observed during recovery. Cortisol responses mapped directly onto three distinct subjective response patterns: (i) expected response and recovery; (ii) expected response, no recovery; (iii) no response. CONCLUSIONS The BEST-C, utilising child confederates of participant target age is a meaningful social stress test for children. This is the first social stress test developed specifically for children that manipulates panel characteristics by using child confederates and a pre-recorded sham panel. Greater cortisol responses to the test were also found to match subjective verbal accounts of the experience. It offers a meaningful acute stress paradigm with potential applications to other child and adolescent age groups. Furthermore, it leads the way in the use of panel manipulation in social stress testing.
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Affiliation(s)
- Tara J Cheetham
- Department of Psychology, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Julie M Turner-Cobb
- Department of Psychology, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.
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Zoccola PM, Dickerson SS. Extending the recovery window: Effects of trait rumination on subsequent evening cortisol following a laboratory performance stressor. Psychoneuroendocrinology 2015; 58:67-78. [PMID: 25965871 DOI: 10.1016/j.psyneuen.2015.04.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 11/21/2022]
Abstract
Mental rehearsal of past stressors through rumination may extend the physiological stress response and exposure to stress-related physiological mediators, such as cortisol. If repeated over time, this prolonged activation may contribute to a number of chronic health conditions. Findings from the emerging literature on the tendency to ruminate and its association with cortisol have been somewhat mixed. In the present study, we tested whether trait rumination predicted elevated cortisol concentrations in response to a performance stressor, and whether this association varied by the social-evaluative context of the stressor and gender. We also examined whether associations persisted into the evening of the stressor. Participants (50% female; mean age=19.83, SD=1.62) were randomly assigned to complete a laboratory speech stressor either in a social-evaluative (SET; n=86) or non-evaluative context (non-SET; n=58). Salivary cortisol concentrations were measured throughout the laboratory visit and later that evening. There was a main effect of trait rumination on greater total cortisol exposure into the evening of the stressor. In addition, trait rumination interacted with stressor context to predict cortisol declines: on the night of the SET stressor, high trait ruminators did not exhibit typical declines in cortisol. Different cortisol patterns emerged for men and women with tendencies to ruminate: women with higher rumination scores had flatter cortisol slopes with greater evening cortisol, whereas men with higher trait rumination scores had greater initial cortisol reactivity to the stressor. Together, these findings suggest that the relationship between the tendency to ruminate and cortisol concentrations is qualified by individual differences (gender) and stressor characteristics (social-evaluative threat).
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Denson TF, Creswell JD, Terides MD, Blundell K. Cognitive reappraisal increases neuroendocrine reactivity to acute social stress and physical pain. Psychoneuroendocrinology 2014; 49:69-78. [PMID: 25063879 DOI: 10.1016/j.psyneuen.2014.07.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 06/17/2014] [Accepted: 07/04/2014] [Indexed: 12/15/2022]
Abstract
Cognitive reappraisal can foster emotion regulation, yet less is known about whether cognitive reappraisal alters neuroendocrine stress reactivity. Some initial evidence suggests that although long-term training in cognitive behavioral therapy techniques (which include reappraisal as a primary training component) can reduce cortisol reactivity to stress, some studies also suggest that reappraisal is associated with heightened cortisol stress reactivity. To address this mixed evidence, the present report describes two experimental studies that randomly assigned young adult volunteers to use cognitive reappraisal while undergoing laboratory stressors. Relative to the control condition, participants in the reappraisal conditions showed greater peak cortisol reactivity in response to a socially evaluative speech task (Experiment 1, N=90) and to a physical pain cold pressor task (Experiment 2, N=94). Participants in the cognitive reappraisal group also reported enhanced anticipatory psychological appraisals of self-efficacy and control in Experiment 2 and greater post-stressor self-efficacy. There were no effects of the reappraisal manipulation on positive and negative subjective affect, pain, or heart rate in either experiment. These findings suggest that although cognitive reappraisal fosters psychological perceptions of self-efficacy and control under stress, this effortful emotion regulation strategy in the short-term may increase cortisol reactivity. Discussion focuses on promising psychological mechanisms for these cognitive reappraisal effects.
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Affiliation(s)
- Thomas F Denson
- School of Psychology, UNSW Australia, Sydney, New South Wales 2052, Australia.
| | - J David Creswell
- Department of Psychology, Carnegie Mellon University, Baker Hall 342c, Pittsburgh, PA 15213, USA
| | - Matthew D Terides
- School of Psychology, UNSW Australia, Sydney, New South Wales 2052, Australia
| | - Kate Blundell
- School of Psychology, UNSW Australia, Sydney, New South Wales 2052, Australia
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