Psychometric Evaluation of the Internalized Stigma of Mental Illness Scale for Patients with Mental Illnesses: Measurement Invariance across Time
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{"title"=>"Psychometric Evaluation of the Internalized Stigma of Mental Illness Scale for Patients with Mental Illnesses: Measurement Invariance across Time", "type"=>"journal", "authors"=>[{"first_name"=>"Chih-Cheng", "last_name"=>"Chang"}, {"first_name"=>"Tsung-Hsien", "last_name"=>"Wu"}, {"first_name"=>"Chih-Yin", "last_name"=>"Chen"}, {"first_name"=>"Jung-Der", "last_name"=>"Wang"}, {"first_name"=>"Chung-Ying", "last_name"=>"Lin"}], "year"=>2014, "source"=>"PLoS ONE", "identifiers"=>{"doi"=>"10.1371/journal.pone.0098767", "pmid"=>"24887440", "issn"=>"1932-6203", "isbn"=>"1932-6203"}, "id"=>"5800c8ff-edbf-3e57-a6d1-e34677a1f6ba", "abstract"=>"BACKGROUND: The current investigation examined the psychometric properties of the Internalized Stigma of Mental Illness (ISMI) scale in a sample of patients with mental illness. In addition to the internal consistency, test-retest reliability, and concurrent validity that previous studies have tested for the ISMI, we extended the evaluation to its construct validity and measurement invariance using confirmatory factor analysis (CFA).\\n\\nMETHODS: Three hundred forty-seven participants completed two questionnaires (i.e., the ISMI and the Depression and Somatic Symptoms Scale [DSSS]), and 162 filled out the ISMI again after 50.23±31.18 days.\\n\\nRESULTS: The results of this study confirmed the frame structure of the ISMI; however, the Stigma Resistance subscale in the ISMI seemed weak. In addition, internal consistency, test-retest reliability, and concurrent validity were all satisfactory for all subscales and the total score of the ISMI, except for Stigma Resistance (α = 0.66; ICC = 0.52, and r = 0.02 to 0.06 with DSSS). Therefore, we hypothesize that Stigma Resistance is a new concept rather than a concept in internalized stigma. The acceptable fit indices supported the measurement invariance of the ISMI across time, and suggested that people with mental illness interpret the ISMI items the same at different times.\\n\\nCONCLUSION: The clinical implication of our finding is that clinicians, when they design interventions, may want to use the valid and reliable ISMI without the Stigma Resistance subscale to evaluate the internalized stigma of people with mental illness.", "link"=>"http://www.mendeley.com/research/psychometric-evaluation-internalized-stigma-mental-illness-scale-patients-mental-illnesses-measureme-6", "reader_count"=>28, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Professor > Associate Professor"=>2, "Student > Doctoral Student"=>4, "Researcher"=>6, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>1, "Student > Master"=>3, "Student > Bachelor"=>4, "Professor"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Professor > Associate Professor"=>2, "Student > Doctoral Student"=>4, "Researcher"=>6, "Student > Ph. D. Student"=>5, "Student > Postgraduate"=>1, "Student > Master"=>3, "Student > Bachelor"=>4, "Professor"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>3, "Nursing and Health Professions"=>5, "Medicine and Dentistry"=>8, "Psychology"=>8, "Social Sciences"=>4}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>8}, "Social Sciences"=>{"Social Sciences"=>4}, "Psychology"=>{"Psychology"=>8}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>5}, "Unspecified"=>{"Unspecified"=>3}}, "reader_count_by_country"=>{"Puerto Rico"=>1, "United Kingdom"=>1}, "group_count"=>4}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1516772"], "description"=>"<p>Demographic data of participants.</p>", "links"=>[], "tags"=>["psychology", "Psychometrics", "Diagnostic medicine", "epidemiology", "Mental health and psychiatry", "Mood disorders", "research design", "Survey research", "Survey methods", "Clinical research design"], "article_id"=>1042528, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Chih-Cheng Chang", "Tsung-Hsien Wu", "Chih-Yin Chen", "Jung-Der Wang", "Chung-Ying Lin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0098767.t001", "stats"=>{"downloads"=>3, "page_views"=>1, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Demographic_data_of_participants_/1042528", "title"=>"Demographic data of participants.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-06-02 04:16:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1516773"], "description"=>"<p><i>df</i>  =  degree of freedom; CFI  =  comparative fit index; RMSEA  =  root mean square of approximation; SRMR  =  standardized root mean square residual.</p><p>M1: Configural model; M2: All factor loadings were invariant between test and retest; M3: All factor loadings and item intercepts were invariant between test and retest; M4: All factor loadings, item intercepts, and construct means were invariant between test and retest.</p>a<p>Internalized Stigma of Mental Illness: using the sum scores of the five subscales as observed item scores.</p><p>*<i>p</i><0.05.</p>", "links"=>[], "tags"=>["psychology", "Psychometrics", "Diagnostic medicine", "epidemiology", "Mental health and psychiatry", "Mood disorders", "research design", "Survey research", "Survey methods", "Clinical research design", "indices", "comparisons", "internalized", "stigma", "subscales"], "article_id"=>1042529, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Chih-Cheng Chang", "Tsung-Hsien Wu", "Chih-Yin Chen", "Jung-Der Wang", "Chung-Ying Lin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0098767.t003", "stats"=>{"downloads"=>4, "page_views"=>10, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Data_model_fit_indices_and_model_comparisons_for_Internalized_Stigma_of_Mental_Illness_ISMI_and_its_five_subscales_n_8202_8202_162_/1042529", "title"=>"Data-model fit indices and model comparisons for Internalized Stigma of Mental Illness (ISMI) and its five subscales (n = 162).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-06-02 04:16:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1516774"], "description"=>"<p><i>df</i>  =  degree of freedom; CFI  =  comparative fit index; RMSEA  =  root mean square of approximation; SRMR  =  standardized root mean square residual; Stigma Resistance items are reversely coded; Second-order factor loadings are in <i>italics</i>.</p>a<p><i>p</i>  =  0.094; all other <i>p</i>s < 0.05 for factor loadings.</p>", "links"=>[], "tags"=>["psychology", "Psychometrics", "Diagnostic medicine", "epidemiology", "Mental health and psychiatry", "Mood disorders", "research design", "Survey research", "Survey methods", "Clinical research design", "loadings", "data-model", "internalized", "stigma"], "article_id"=>1042530, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Chih-Cheng Chang", "Tsung-Hsien Wu", "Chih-Yin Chen", "Jung-Der Wang", "Chung-Ying Lin"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0098767.t002", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Factor_loadings_and_data_model_fit_of_Internalized_Stigma_of_Mental_Illness_/1042530", "title"=>"Factor loadings and data-model fit of Internalized Stigma of Mental Illness.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-06-02 04:16:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1516775", "https://ndownloader.figshare.com/files/1516776"], "description"=>"<div><p>Background</p><p>The current investigation examined the psychometric properties of the Internalized Stigma of Mental Illness (ISMI) scale in a sample of patients with mental illness. In addition to the internal consistency, test-retest reliability, and concurrent validity that previous studies have tested for the ISMI, we extended the evaluation to its construct validity and measurement invariance using confirmatory factor analysis (CFA).</p><p>Methods</p><p>Three hundred forty-seven participants completed two questionnaires (i.e., the ISMI and the Depression and Somatic Symptoms Scale [DSSS]), and 162 filled out the ISMI again after 50.23±31.18 days.</p><p>Results</p><p>The results of this study confirmed the frame structure of the ISMI; however, the Stigma Resistance subscale in the ISMI seemed weak. In addition, internal consistency, test-retest reliability, and concurrent validity were all satisfactory for all subscales and the total score of the ISMI, except for Stigma Resistance (α = 0.66; ICC = 0.52, and <i>r</i> = 0.02 to 0.06 with DSSS). Therefore, we hypothesize that Stigma Resistance is a new concept rather than a concept in internalized stigma. The acceptable fit indices supported the measurement invariance of the ISMI across time, and suggested that people with mental illness interpret the ISMI items the same at different times.</p><p>Conclusion</p><p>The clinical implication of our finding is that clinicians, when they design interventions, may want to use the valid and reliable ISMI without the Stigma Resistance subscale to evaluate the internalized stigma of people with mental illness.</p></div>", "links"=>[], "tags"=>["psychology", "Psychometrics", "Diagnostic medicine", "epidemiology", "Mental health and psychiatry", "Mood disorders", "research design", "Survey research", "Survey methods", "Clinical research design", "internalized", "stigma", "patients", "invariance"], "article_id"=>1042531, "categories"=>["Biological Sciences", "Science Policy"], "users"=>["Chih-Cheng Chang", "Tsung-Hsien Wu", "Chih-Yin Chen", "Jung-Der Wang", "Chung-Ying Lin"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0098767.s001", "https://dx.doi.org/10.1371/journal.pone.0098767.s002"], "stats"=>{"downloads"=>3, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Psychometric_Evaluation_of_the_Internalized_Stigma_of_Mental_Illness_Scale_for_Patients_with_Mental_Illnesses_Measurement_Invariance_across_Time_/1042531", "title"=>"Psychometric Evaluation of the Internalized Stigma of Mental Illness Scale for Patients with Mental Illnesses: Measurement Invariance across Time", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2014-06-02 04:16:15"}

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