Assessing the dimensionality of optimism and pessimism using a multimeasure approach

Weighted least-squares confirmatory factor analysis and exploratory factor-analytic procedures were used to assess the dimensionality of three self-report instruments designed to measure optimism and pessimism: the Life Orientation Test (LOT), the Hopelessness Scale (HS), and the Optimism and Pessimism Scale (OPS). The LOT was found to be bidimensional, the HS unidimensional, and the OPS multidimensional. The HS was interpreted as measuring a unipolar pessimism dimension. Factor analyses performed on an item subset from the OPS that fit the definition of optimism and pessimism as generalized outcome expectancies also supported the two-dimensional model of optimism and pessimism. Differential correlations between separate optimism and pessimism indices and a measure of psychological stress provided partial further support for a two-dimensional model of optimism and pessimism.

[1]  F. Rhodewalt,et al.  Optimism, neuroticism, coping, and symptom reports: an alternative interpretation of the Life Orientation Test. , 1989, Journal of personality and social psychology.

[2]  Lloyd G. Humphreys,et al.  Three Approaches to Determining the Dimensionality of Binary Items , 1991 .

[3]  G. Metalsky,et al.  Hopelessness depression: A theory-based subtype of depression. , 1989 .

[4]  D Lester,et al.  The measurement of pessimism: the hopelessness scale. , 1974, Journal of consulting and clinical psychology.

[5]  Roderick P. McDonald,et al.  Factor Analysis and Related Methods , 1985 .

[6]  A. Beck.  Cognitive models of depression. , 1987 .

[7]  C. Carver,et al.  Optimism, coping, and health: assessment and implications of generalized outcome expectancies. , 2009, Health psychology : official journal of the Division of Health Psychology, American Psychological Association.

[8]  Roderick P. McDonald,et al.  THE THEORETICAL FOUNDATIONS OF PRINCIPAL FACTOR ANALYSIS, CANONICAL FACTOR ANALYSIS, AND ALPHA FACTOR ANALYSIS , 1970 .

[9]  R. P. McDonald,et al.  Structural Equations with Latent Variables , 1989 .

[10]  S. Folkman,et al.  Stress, appraisal, and coping , 1974 .

[11]  C. Carver,et al.  Dispositional optimism and physical well-being: the influence of generalized outcome expectancies on health. , 1987, Journal of personality.

[12]  Karl G. Jöreskog,et al.  LISREL 7: A guide to the program and applications , 1988 .

[13]  J. H. Steiger.  Tests for comparing elements of a correlation matrix. , 1980 .

[14]  A. Bandura.  Social Foundations of Thought and Action: A Social Cognitive Theory , 1985 .

[15]  L. Derogatis,et al.  The Derogatis Stress Profile (DSP): quantification of psychological stress. , 1987, Advances in psychosomatic medicine.

[16]  S. Folkman,et al.  Stress, Appraisal, and Coping. New York, NY: Springer; , 1984 .

[17]  J. Fawcett,et al.  An item-response theory evaluation of the Beck Hopelessness Scale , 1992, Cognitive Therapy and Research.

[18]  William N. Dember,et al.  A new instrument for measuring optimism and pessimism: Test-retest reliability and relations with happiness and religious commitment , 1989 .

[19]  William N. Dember,et al.  The measurement of optimism and pessimism , 1989 .

[20]  A. Beck,et al.  Hopelessness and eventual suicide: a 10-year prospective study of patients hospitalized with suicidal ideation. , 1985, The American journal of psychiatry.

[21]  Jeffrey W. Kusulas,et al.  Distinguishing optimism from pessimism : relations to fundamental dimensions of mood and personality , 1992 .

[22]  John Hattie,et al.  Methodology Review: Assessing Unidimensionality of Tests and ltenls , 1985 .

[23]  Fritz Drasgow,et al.  Item response theory : application to psychological measurement , 1983 .