Hello Ibrahim,

I'm not sure whether these papers demonstrate what you asked about in your question, but might be worth looking at; for the first paper, see the bottom paragraph on p.441:

Glaesmer, H., Rief, W., Martin, A., Mewes, R., Brähler, E., Zenger, M., & Hinz, A. (2012). Psychometric properties and population‐based norms of the Life Orientation Test Revised (LOT‐R). British journal of health psychology, 17(2), 432-445.

https://www.researchgate.net/publication/51820649_Psychometric_properties_and_population-based_norms_of_the_Life_Orientation_Test_Revised_LOT-R

These papers may also be relevant:

Hirsch, J. K., Britton, P. C., & Conner, K. R. (2010). Psychometric evaluation of the life orientation test—revised in treated opiate dependent individuals. International Journal of Mental Health and Addiction, 8(3), 423-431.

https://www.researchgate.net/publication/225498897

Trivedi, R. B., Blumenthal, J. A., O'Connor, C., Adams, K., Hinderliter, A., Dupree, C., ... & Sherwood, A. (2009). Coping styles in heart failure patients with depressive symptoms. Journal of psychosomatic research, 67(4), 339-346.

https://www.researchgate.net/profile/Ranak_Trivedi/publication/26830337_Coping_styles_in_heart_failure_patients_with_depressive_symptoms_Journal_of_Psychosomatic_Research_674_339-346/links/00463529e80ad1410a000000.pdf

Very best wishes,

Mary

Article Psychometric properties and population-based norms of the Li...

Article Psychometric Evaluation of the Life Orientation Test—Revised...

Article Coping styles in heart failure patients with depressive symp...

 Thank you so much Mary!

I really appreciate your help. 

Actually I already have most of those papers you suggest. They go into too much detail, and I would like a simple asnwer to a simple question. Would you be able to help me on that? I would be very grateful.

Thank you Mary

Have a great New Year!

Ibrahim

All the best for 2017 to you, too!

I had another look, and can't see anything that's as straight forward as what you need. This paper (see paragraph before the discussion, p.437 is maybe relevant, butI don't think it is what you are looking for:

Herzberg, P. Y., Glaesmer, H., & Hoyer, J. (2006). Separating optimism and pessimism: a robust psychometric analysis of the revised Life Orientation Test (LOT-R). Psychological assessment, 18(4), 433.

https://www.researchgate.net/profile/Philipp_Herzberg/publication/6644271_Separating_optimism_and_pessimism_A_robust_psychometric_analysis_of_the_Revised_Life_Orientation_Test_LOT-R/links/00b49528a28aa101a3000000.pdf

I wonder if it is worth contacting any of the authors of these papers who are ResearchGate members?

I have only been able to access the abstract for this chapter:

Zenger M. (2014) LOT-R. Life Orientation Test - Revised IN: Psychologische und sozialwissenschaftliche Kurzskalen. Standardisierte Erhebungsinstrumente für Wissenschaft und Praxis, Publisher: Medizinisch Wissenschaftliche Verlagsgesellschaft, Editors: In C. Kemper, E. Brähler, M. Zenger, pp.190-193

https://www.researchgate.net/publication/258933904_LOT-R_Life_Orientation_Test_-_Revised

I also looked at this paper:

Gustems-Carnicer, J., Calderón, C., & Santacana, M. F. (2016). Psychometric properties of the Life Orientation Test (LOT-R) and its relationship with psychological well-being and academic progress in college students. Revista Latinoamericana de Psicología.

https://www.researchgate.net/publication/303800599_Psychometric_properties_of_the_Life_Orientation_Test_LOT-R_and_its_relationship_with_psychological_well-being_and_academic_progress_in_college_students

. . and tried to access a paper referenced by the authors:

Haugen, R., & Lund, T. (2002). Self-concept, attributional style and depression. Educational Psychology, 22(3), 305-315.

https://www.researchgate.net/publication/233488968_Self-concept_Attributional_Style_and_Depression

. . . but could not access the full text.

So I haven't really been able to help. But maybe other RG members will be able to.

Very best wishes,

Mary 

Article Separating Optimism and Pessimism: A Robust Psychometric Ana...

Article Self-concept, Attributional Style and Depression

Chapter LOT-R. Life Orientation Test - Revised

Article Psychometric properties of the Life Orientation Test (LOT-R)...