References
- Arbuckle, J. (2008). Analysis of moment structures (AMOS) 17.0.0. AMOS Development Corporation.
- Bardeen, J. R., & Fergus, T. A. (2016). The interactive effect of cognitive fusion and experiential avoidance on anxiety, depression, stress and posttraumatic stress symptoms. Journal of Contextual Behavioral Science, 5(1), 1–6. https://doi.org/https://doi.org/10.1016/j.jcbs.2016.02.002
- Bessaha, M. L., Sabbath, E. L., Morris, Z., Malik, S., Scheinfeld, L., & Saragossi, J. (2019). A systematic review of loneliness interventions among non-elderly adults. Clinical Social Work Journal, 48(1), 110–125. https://doi.org/https://doi.org/10.1007/s10615-019-00724-0
- Bond, F. W., Hayes, S. C., Baer, R. A., Carpenter, K. M., Guenole, N., Orcutt, H. K., Waltz, T., & Zettle, R. D. (2011). Preliminary psychometric properties of the Acceptance and Action Questionnaire-II: A revised measure of psychological flexibility and experiential avoidance. Behavior Therapy, 42(4), 676–688. https://doi.org/https://doi.org/10.1016/j.beth.2011.03.007
- Bramwell, K., & Richardson, T. (2017). Improvements in depression and mental health after acceptance and commitment therapy are related to changes in defusion and values-based action. Journal of Contemporary Psychotherapy, 48(1), 9–14. https://doi.org/https://doi.org/10.1007/s10879-017-9367-6
- Christiansen, J., Larsen, F. B., & Lasgaard, M. (2016). Do stress, health behavior, and sleep mediate the association between loneliness and adverse health conditions among older people? Social Science & Medicine, 152(C), 80–86. https://doi.org/https://doi.org/10.1016/j.socscimed.2016.01.020
- Ciarrochi, J., Bilich, L., & Godsell, C. (2010). Psychological flexibility as a mechanism of change in acceptance and commitment therapy. In R. A. Baer (Ed.), Assessing mindfulness and acceptance processes in clients: Illuminating the theory and practice of change (pp. 51–75). Context Press/New Harbinger Publications.
- Cohen, J. (1992). A power primer. Psychological Bulletin, 112, 155–166. https://doi.org/https://doi.org/10.1037/0033-2909.112.1.155
- Cohen, J., Cohen, P., West, S., & Aiken, L. (2003). Applied multiple regression/correlation analysis for the behavioural sciences (3th ed.). Lawrence Erlbaum Associates.
- Coutinho, M., Trindade, I. A., & Ferreira, C. (2019). Experiential avoidance, committed action and quality of life: Differences between college students with and without chronic illness. Journal of Health Psychology, 26(7), 1035–1045. https://doi.org/https://doi.org/10.1177/1359105319860167
- Gardner, W., Gabriel, S., & Diekman, A. B. (2000). Interpersonal processes. In J. Cacioppo, L. Tassinary, & G. Berntson (Eds.), Handbook of psychophysiology (pp. 643–664). Cambridge University Press.
- Ghosh, S., Shand, A., & Ferguson, A. (2000). Ulcerative colitis. British Medical Journal, 320(7242), 1119–1123. https://doi.org/https://doi.org/10.1136/bmj.320.7242.1119
- Gillanders, D. T., Bolderston, H., Bond, F. W., Dempster, M., Flaxman, P. E., Campbell, L., Kerr, S., Tansey, L., Noel, P., Ferenbach, C., Masley, S., Roach, L., Lloyd, J., May, L., Clarke, S., & Remington, B. (2014). The development and initial validation of the cognitive fusion questionnaire. Behavior Therapy, 45(1), 83–101. https://doi.org/https://doi.org/10.1016/j.beth.2013.09.001
- Gillanders, D. T., Sinclair, A. K., MacLean, M., & Jardine, K. (2015). Illness cognitions, cognitive fusion, avoidance and self-compassion as predictors of distress and quality of life in a heterogeneous sample of adults, after cancer. Journal of Contextual Behavioral Science, 4(4), 300–311. https://doi.org/https://doi.org/10.1016/j.jcbs.2015.07.003
- Graham, C. D., Gouick, J., Krahé, C., & Gillanders, D. (2016). A systematic review of the use of acceptance and commitment therapy (ACT) in chronic disease and long-term conditions. Clinical Psychology Review, 46, 46–58. https://doi.org/https://doi.org/10.1016/j.cpr.2016.04.009
- Hawkley, L. C., Hughes, M. E., Waite, L. J., Masi, C. M., Thisted, R. A., & Cacioppo, J. T. (2008). From social structural factors to perceptions of relationship quality and loneliness: The Chicago health, aging, and social relations study. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences, 63(6), 375–384. https://doi.org/https://doi.org/10.1093/geronb/63.6.s375
- Hayes, S. C., Strosahl, K. D., Bunting, K., Twohig, M., & Wilson, K. G. (2004). What is acceptance and commitment therapy? In S. C. Hayes & K. D. Strosahl (Eds.), A practical guide to acceptance and commitment therapy (pp. 3–29). Springer.
- Hayes, S. C., Luoma, J. B., Bond, F. W., Masuda, A., & Lillis, J. (2006). Acceptance and commitment therapy: Model, processes and outcomes. Behaviour Research and Therapy, 44(1), 1–25. https://doi.org/https://doi.org/10.1016/j.brat.2005.06.006
- Hayes, S. C., Strosahl, K. D., & Wilson, K. G. (2012). Acceptance and commitment therapy: The process and practice of mindful change (2nd ed.). The Guilford Press.
- Hu, L., & Bentler, P. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modelling: A Multidisciplinary Journal, 6(1), 1–55. https://doi.org/https://doi.org/10.1080/10705519909540118
- Hughes, M. E., Waite, L. J., Hawkley, L. C., & Cacioppo, J. T. (2004). A short scale for measuring loneliness in large surveys. Research on Aging, 26(6), 655–672. https://doi.org/https://doi.org/10.1177/0164027504268574
- Kline, R. (2005). Principles and practice of structural equation modelling (2nd ed.). The Guildford Press.
- Lee, V. (2008). The existential plight of cancer: Meaning making as a concrete approach to the intangible search for meaning. Supportive Care in Cancer, 16(7), 779–785. https://doi.org/https://doi.org/10.1007/s00520-007-0396-7
- Luoma, J. B., & Hayes, S. C. (2009). Cognitive defusion. In W. O’Donahue, J. E. Fisher, & S. C. Hayes (Eds.), Empirically supported techniques of cognitive behavioral therapy: A step-by step guide for clinicians (2nd ed., pp. 71–78). Wiley.
- Maitland, D. W. (2020). Experiential avoidance and fear of intimacy: A contextual behavioral account of loneliness and resulting psychopathology symptoms. Journal of Contextual Behavioral Science, 18, 193–200. https://doi.org/https://doi.org/10.1016/j.jcbs.2020.10.002
- McCracken, L. M., Chilcot, J., & Norton, S. (2015). Further development in the assessment of psychological flexibility: A shortened Committed Action Questionnaire (CAQ-8). European Journal of Pain, 19(5), 677–685. https://doi.org/https://doi.org/10.1002/ejp.589
- McCracken, L. M., & Vowles, K. E. (2014). Acceptance and commitment therapy and mindfulness for chronic pain: Model, process, and progress. American Psychologist, 69(2), 178–187. https://doi.org/https://doi.org/10.1037/a0035623
- Musich, S., Wang, S. S., Hawkins, K., & Yeh, C. S. (2015). The impact of loneliness on quality of life and patient satisfaction among older, sicker adults. Gerontology and Geriatric Medicine, 1, 1–9. https://doi.org/https://doi.org/10.1177/2333721415582119
- Petitte, T., Mallow, J., Barnes, E., Petrone, A., Barr, T., & Theeke, L. (2015). A systematic review of loneliness and common chronic physical conditions in adults. The Open Psychology Journal, 8(Suppl 2), 113–132. https://doi.org/https://doi.org/10.2174/1874350101508010113
- Pinto-Gouveia, J., Dinis, A., Gregório, S., & Pinto, A. M. (2017). Concurrent effects of different psychological processes in the prediction of depressive symptoms – The role of cognitive fusion. Current Psychology, 39(1), 528–539. https://doi.org/https://doi.org/10.1007/s12144-017-9767-5
- Pinto-Gouveia, J., Duarte, C., Matos, M., & Fráguas, S. (2014). The protective role of self-compassion in relation to psychopathology symptoms and quality of life in chronic and in cancer patients. Clinical Psychology & Psychotherapy, 21(4), 311–323. https://doi.org/https://doi.org/10.1002/cpp.1838
- Pinto-Gouveia, J., Gregório, S., Dinis, A., & Xavier, A. (2012). Experiential avoidance in clinical and non-clinical samples: AAQ-II Portuguese version. International Journal of Psychology and Psychological Therapy, 12(2), 139–156. https://bit.ly/3zknDIk
- Russell, D. W. (1996). UCLA loneliness scale (Version 3): Reliability, validity, and factor structure. Journal of Personality Assessment, 66(1), 20–40. https://doi.org/https://doi.org/10.1207/s15327752jpa6601_2
- Russell, D. W., Cutrona, C. E., McRae, C., & Gomez, M. (2012). Is loneliness the same as being alone? The Journal of Psychology, 146(1–2), 7–22. https://doi.org/https://doi.org/10.1080/00223980.2011.589414
- Schrempft, S., Jackowska, M., Hamer, M., & Steptoe, A. (2019). Associations between social isolation, loneliness, and objective physical activity in older men and women. BioMed Central Public Health, 19(1), 74. https://doi.org/https://doi.org/10.1186/s12889-019-6424-y
- Scott, W., Hann, K. E., & McCracken, L. M. (2016). A comprehensive examination of changes in psychological flexibility following acceptance and commitment therapy for chronic pain. Journal of Contemporary Psychotherapy, 46(3), 139–148. https://doi.org/https://doi.org/10.1007/s10879-016-9328-5
- Shovestul, B., Han, J., Germine, L., & Dodell-Feder, D. (2020). Risk factors for loneliness: The high relative importance of age versus other factors. PLoS ONE, 15(2), e0229087. https://doi.org/https://doi.org/10.31234/osf.io/t8n2h
- The WHOQOL Group. (1994). Development of the WHOQOL: Rationale and current status. International Journal of Mental Health, 23(3), 24–56. https://doi.org/https://doi.org/10.1080/00207411.1994.11449286
- Trindade, I. A., Marta-Simões, J., Ferreira, C., & Pinto-Gouveia, J. (2017). Developments on committed action: Validity of the CAQ-8 and analysis of committed action’s role in depressive symptomatology in breast cancer patients and healthy individuals. Clinical Psychology & Psychotherapy, 25(1), 42–50. https://doi.org/https://doi.org/10.1002/cpp.2125
- Turner, J., & Kelly, B. (2000). Emotional dimensions of chronic disease. The Western Journal of Medicine, 172(2), 124–128. https://doi.org/https://doi.org/10.1136/ewjm.172.2.124
- Vaz-Serra, A., Canavarro, M. C., Simões, M. R., Pereira, M., Gameiro, S., Quartilho, M. J., Rijo, D., Carona, C., & Paredes, T. (2006). Estudos psicométricos do instrumento de avaliação da qualidade de vida da Organização Mundial de Saúde (WHOQOL-Bref) para Português de Portugal. Psiquiatria Clínica, 27(1), 41–49. http://hdl.handle.net/10316/21539
- Vowles, K. E., McCracken, L. M., & O’Brien, J. Z. (2011). Acceptance and values-based action in chronic pain: A three-year follow-up analysis of treatment effectiveness and process. Behaviour Research and Therapy, 49(11), 748–755. https://doi.org/https://doi.org/10.1016/j.brat.2011.08.002
- Wilson, K. G., & Murrell, A. R. (2004). Values work in acceptance and commitment therapy. In S. C. Hayes, V. M. Follette, & M. M. Linehan (Eds.), Mindfulness and acceptance: Expanding the cognitive-behavioral tradition (pp. 120–151). The Guilford Press.
- World Health Organization. (2018). Noncommunicable diseases. http://www.who.int/mediacentre/factsheets/fs355/en/
- Zeas-Sigüenza, A., Ganho, A., Ruisoto, P., & Ferreira, C. (Unpublished results). Validation of the Portuguese version of UCLA loneliness scale version- 3.