Systematic review reveals heterogeneity in the use of the scale to assess unawareness of mental disorder (SUMD)

Current Psychiatry Reports

Volumn 15, Issue 6, 2013, Pages

  Dumas, Rémy ^a,b   Baumstarck, Karine ^a   Michel, Pierre ^a   Lançon, Christophe ^a,b   Auquier, Pascal ^a   Boyer, Laurent ^a  

^a AIX MARSEILLE UNIVERSITY   (France)

^b HÔPITAL SAINTE MARGUERITE   (France)

Author keywords

Insight; Psychiatry; Psychometrics; Scale to assess unawareness of mental disorder; Schizophrenia; SUMD

Indexed keywords

AUSTRALIA; BIPOLAR DISORDER; BRAZIL; CANADA; CHINA; DATA ANALYSIS; FRANCE; GERMANY; HUMAN; INDIA; INTROSPECTION; IRELAND; ITALY; JAPAN; LIKERT SCALE; MAJOR DEPRESSION; MEDLINE; MENTAL DISEASE; METHODOLOGY; NAMED INVENTORIES, QUESTIONNAIRES AND RATING SCALES; NORWAY; PORTUGAL; PSYCHOMETRY; PSYCHOSIS; RATING SCALE; RESEARCH SUBJECT; REVIEW; SAMPLE SIZE; SCALE TO ASSESS UNAWARENESS OF MENTAL DISORDER; SCHIZOAFFECTIVE PSYCHOSIS; SCHIZOPHRENIA; SCORING SYSTEM; SINGAPORE; SOUTH KOREA; SPAIN; STATISTICAL ANALYSIS; SWITZERLAND; SYSTEMATIC REVIEW; TURKEY (REPUBLIC); UNITED STATES; AWARENESS; CULTURAL FACTOR; PSYCHOLOGICAL RATING SCALE; PSYCHOLOGY; STANDARD;

AWARENESS; CROSS-CULTURAL COMPARISON; HUMANS; PSYCHIATRIC STATUS RATING SCALES; PSYCHOMETRICS; SCHIZOPHRENIA; SCHIZOPHRENIC PSYCHOLOGY;

EID: 84876781189     PISSN: 15233812     EISSN: 15351645     Source Type: Journal    
DOI: 10.1007/s11920-013-0361-8     Document Type: Review

References (122)

1. Amador XF, Gorman JM. Psychopathologic domains and insight in schizophrenia. Psychiatr Clin N Am. 1998;21:27-42.
2. Karow A, Pajonk FG. Insight and quality of life in schizophrenia: recent findings and treatment implications. Curr Opin Psychiatry. 2006;19:637-41.
3. Drake RJ, Pickles A, Bentall RP, Kinderman P, Haddock G, Tarrier N, et al. The evolution of insight, paranoia and depression during early schizophrenia. Psychol Med. 2004;34:285-92.
4. Pedrelli P, McQuaid JR, Granholm E, Patterson TL, McClure F, Beck AT, et al. Measuring cognitive insight in middle-aged and older patients with psychotic disorders. Schizophr Res. 2004;71:297-305.
5. Subotnik KL, Nuechterlein KH, Irzhevsky V, Kitchen CM, Woo SM, Mintz J. Is unawareness of psychotic disorder a neurocognitive or psychological defensiveness problem? Schizophr Res. 2005;75:147-57.
6. Schwartz-Stav O, Apter A, Zalsman G. Depression, suicidal behavior and insight in adolescents with schizophrenia. Eur Child Adolesc Psychiatry. 2006;15:352-9.
7. Sevy S, Nathanson K, Visweswaraiah H, Amador X. The relationship between insight and symptoms in schizophrenia. Compr Psychiatry. 2004;45:16-9.
8. Amador XF, Flaum M, Andreasen NC, Strauss DH, Yale SA, Clark SC, et al. Awareness of illness in schizophrenia and schizoaffective and mood disorders. Arch Gen Psychiatry. 1994;51:826-36.
9. Smith TE, Hull JW, Israel LM, Willson DF. Insight, symptoms, and neurocognition in schizophrenia and schizoaffective disorder. Schizophr Bull. 2000;26:193-200.
10. Moore O, Cassidy E, Carr A, O'Callaghan E. Unawareness of illness and its relationship with depression and self-deception in schizophrenia. Eur Psychiatry. 1999;14:264-9.
11. Smith CM, Barzman D, Pristach CA. Effect of patient and family insight on compliance of schizophrenic patients. J Clin Pharmacol. 1997;37:147-54.
12. Sim K, Chan YH, Chua TH, Mahendran R, Chong SA, McGorry P. Physical comorbidity, insight, quality of life and global functioning in first episode schizophrenia: a 24-month, longitudinal outcome study. Schizophr Res. 2006;88:82-9.
13. Piccinni A, Catena M, Del Debbio A, Marazziti D, Monje C, Schiavi E, et al. Health-related quality of life and functioning in remitted bipolar I outpatients. Compr Psychiatry. 2007;48:323-8.
14. Jovanovski D, Zakzanis KK, Young DA, Campbell Z. Assessing the relationship between insight and everyday executive deficits in schizophrenia: a pilot study. Psychiatry Res. 2007;151:47-54.
15. Raffard S, Bayard S, Gely-Nargeot M-C, Capdevielle D, Maggi M, Barbotte E, et al. Insight and executive functioning in schizophrenia: a multidimensional approach. Psychiatry Res. 2009;167:239-50.
16. Marková IS, Berrios GE. Insight in clinical psychiatry. A new model. J Nerv Ment Dis. 1995;183:743-51.
17. Schwartz RC. Insight and illness in chronic schizophrenia. Compr Psychiatry. 1998;39:249-54.
18. Mintz AR, Dobson KS, Romney DM. Insight in schizophrenia: a meta-analysis. Schizophr Res. 2003;61:75-88.
19. Raffard S, Bayard S, Capdevielle D, Garcia F, Boulenger J-P, Gely-Nargeot M-C. Lack of insight in schizophrenia: a review. Part I: theoretical concept, clinical aspects and Amador's model. Encephale. 2008;34:597-605.
20. Amador XF, Strauss DH, Yale SA, Flaum MM, Endicott J, Gorman JM. Assessment of insight in psychosis. Am J Psychiatry. 1993;150:873-9.
21. Schwartz RC, Skaggs JL, Petersen S. Critique of recent empirical research on insight and symptomatology in schizophrenia. Psychol Rep. 2000;86:471-4.
22. Raffard S, Trouillet R, Capdevielle D, Gely-Nargeot M-C, Bayard S, Larøi F, et al. French adaptation and validation of the scale to assess unawareness of mental disorder. Can J Psychiatry. 2010;55:523-31.
23. Paillot C, Ingrand P, Millet B, Amador X-F, Senon J-L, Olié J-P, et al. French translation and validation of the Scale to assess Unawareness of Mental Disorder (SUMD) in patients with schizophrenics. Encephale. 2010;36:472-7.
24. Ruiz A, Pousa E, Duñó R, Crosas J, Cuppa S, García C. Spanish adaptation of the Scale to Asses Unawareness of Mental Disorder (SUMD). Actas Esp Psiquiatr. 2008;36:111-1198.
25. Fiss N, Chaves AC. Translation, adaptation and reliability study of the Scale to Assess Unawareness of Mental Disorder-SUMD. Rev Bras Psiquiatr. 2005;27:143-5.
26. Young DA, Davila R, Scher H. Unawareness of illness and neuropsychological performance in chronic schizophrenia. Schizophr Res. 1993;10:117-24.
27. Kemp RA, Lambert TJ. Insight in schizophrenia and its relationship to psychopathology. Schizophr Res. 1995;18:21-8.
28. Amador XF, Friedman JH, Kasapis C, Yale SA, Flaum M, Gorman JM. Suicidal behavior in schizophrenia and its relationship to awareness of illness. Am J Psychiatry. 1996;153:1185-8.
29. Cassano GB, Pini S, Saettoni M, Rucci P, Dell'Osso L. Occurrence and clinical correlates of psychiatric comorbidity in patients with psychotic disorders. J Clin Psychiatry. 1998;59:60-8.
30. Schwartz RC, Cohen BN, Grubaugh A. Does insight affect long-term impatient treatment outcome in chronic schizophrenia? Compr Psychiatry. 1997;38:283-8.
31. Mohamed S, Fleming S, Penn DL, Spaulding W. Insight in schizophrenia: its relationship to measures of executive functions. J Nerv Ment Dis. 1999;187:525-31.
32. Arango C, Adami H, Sherr JD, Thaker GK, Carpenter Jr WT. Relationship of awareness of dyskinesia in schizophrenia to insight into mental illness. Am J Psychiatry. 1999;156:1097-9.
33. Pallanti S, Quercioli L, Pazzagli A, Rossi A, Dell'Osso L, Pini S, et al. Awareness of illness and subjective experience of cognitive complaints in patients with bipolar I and bipolar II disorder. Am J Psychiatry. 1999;156:1094-6.
34. Cuesta MJ, Peralta V, Zarzuela A. Reappraising insight in psychosis. Multi-scale longitudinal study. Br J Psychiatry. 2000;177:233-40.
35. Ghaemi SN, Boiman E, Goodwin FK. Insight and outcome in bipolar, unipolar, and anxiety disorders. Compr Psychiatry. 2000;41:167-71.
36. Larøi F, Fannemel M, Rønneberg U, Flekkøy K, Opjordsmoen S, Dullerud R, et al. Unawareness of illness in chronic schizophrenia and its relationship to structural brain measures and neuropsychological tests. Psychiatry Res. 2000;100:49-58.
37. Rossi A, Arduini L, Prosperini P, Kalyvoka A, Stratta P, Daneluzzo E. Awareness of illness and outcome in schizophrenia. Eur Arch Psychiatry Clin Neurosci. 2000;250:73-5.
38. Chen EY, Kwok CL, Chen RY, Kwong PP. Insight changes in acute psychotic episodes: a prospective study of Hong Kong Chinese patients. J Nerv Ment Dis. 2001;189:24-30.
39. Pini S, Cassano GB, Dell'Osso L, Amador XF. Insight into illness in schizophrenia, schizoaffective disorder, and mood disorders with psychotic features. Am J Psychiatry. 2001;158:122-5.
40. Thompson KN, McGorry PD, Harrigan SM. Reduced awareness of illness in first-episode psychosis. Compr Psychiatry. 2001;42:498-503.
41. Dell'Osso L, Pini S, Cassano GB, Mastrocinque C, Seckinger RA, Saettoni M, et al. Insight into illness in patients with mania, mixed mania, bipolar depression and major depression with psychotic features. Bipolar Disord. 2002;4:315-22.
42. Sajatovic M, Rosch DS, Sivec HJ, Sultana D, Smith DA, Alamir S, et al. Insight into illness and attitudes toward medications among inpatients with schizophrenia. Psychiatr Serv. 2002;53:1319-21.
43. Young DA, Campbell Z, Zakzanis KK, Weinstein E. A comparison between an interview and a self-report method of insight assessment in chronic schizophrenia. Schizophr Res. 2003;63:103-9.
44. Pini S, Dell'Osso L, Amador XF, Mastrocinque C, Saettoni M, Cassano GB. Awareness of illness in patients with bipolar I disorder with or without comorbid anxiety disorders. Aust N Z J Psychiatry. 2003;37:355-61.
45. Arduini L, Kalyvoka A, Stratta P, Rinaldi O, Daneluzzo E, Rossi A. Insight and neuropsychological function in patients with schizophrenia and bipolar disorder with psychotic features. Can J Psychiatry. 2003;48:338-41.
46. Lysaker PH, Bryson GJ, Lancaster RS, Evans JD, Bell MD. Insight in schizophrenia: associations with executive function and coping style. Schizophr Res. 2003;59:41-7.
47. Sim K, Mahendran R, Siris SG, Heckers S, Chong SA. Subjective quality of life in first episode schizophrenia spectrum disorders with comorbid depression. Psychiatry Res. 2004;129:141-7.
48. Freudenreich O, Deckersbach T, Goff DC. Insight into current symptoms of schizophrenia. Association with frontal cortical function and affect. Acta Psychiatr Scand. 2004;110:14-20.
49. Koren D, Seidman LJ, Poyurovsky M, Goldsmith M, Viksman P, Zichel S, et al. The neuropsychological basis of insight in first-episode schizophrenia: a pilot metacognitive study. Schizophr Res. 2004;70:195-202.
50. Liraud F, Droulout T, Parrot M, Verdoux H. Agreement between self-rated and clinically assessed symptoms in subjects with psychosis. J Nerv Ment Dis. 2004;192:352-6.
51. Miller CJ, Klugman J, Berv DA, Rosenquist KJ, Ghaemi SN. Sensitivity and specificity of the Mood Disorder Questionnaire for detecting bipolar disorder. J Affect Disord. 2004;81:167-71.
52. Pini S, de Queiroz V, Dell'Osso L, Abelli M, Mastrocinque C, Saettoni M, et al. Cross-sectional similarities and differences between schizophrenia, schizoaffective disorder and mania or mixed mania with mood-incongruent psychotic features. Eur Psychiatry. 2004;19:8-14.
53. Simon AE, Berger GE, Giacomini V, Ferrero F, Mohr S. Insight in relation to psychosocial adjustment in schizophrenia. J Nerv Ment Dis. 2004;192:442-5.
54. Beck AT, Baruch E, Balter JM, Steer RA, Warman DM. A new instrument for measuring insight: the beck cognitive insight scale. Schizophr Res. 2004;68:319-29.
55. Sim K, Swapna V, Mythily S, Mahendran R, Kua EH, McGorry P, et al. Psychiatric comorbidity in first episode psychosis: the Early Psychosis Intervention Program (EPIP) experience. Acta Psychiatr Scand. 2004;109:23-9.
56. Goodman C, Knoll G, Isakov V, Silver H. Insight into illness in schizophrenia. Compr Psychiatry. 2005;46:284-90.
57. Chen EYH, Tam DKP, Wong JWS, Law CW, Chiu CPY. Self-administered instrument to measure the patient's experience of recovery after first-episode psychosis: development and validation of the psychosis recovery inventory. Aust N Z J Psychiatry. 2005;39:493-9.
58. Iancu I, Poreh A, Lehman B, Shamir E, Kotler M. The positive and negative symptoms questionnaire: a self-report scale in schizophrenia. Compr Psychiatry. 2005;46:61-6.
59. Caton CLM, Hasin DS, Shrout PE, Drake RE, Dominguez B, Samet S, et al. Predictors of psychosis remission in psychotic disorders that co-occur with substance use. Schizophr Bull. 2006;32:618-25.
60. Shad MU, Muddasani S, Keshavan MS. Prefrontal subregions and dimensions of insight in first-episode schizophrenia-a pilot study. Psychiatry Res. 2006;146:35-42.
61. Varga M, Magnusson A, Flekkøy K, Rønneberg U, Opjordsmoen S. Insight, symptoms and neurocognition in bipolar I patients. J Affect Disord. 2006;91:1-9.
62. Cuesta MJ, Peralta V, Zarzuela A, Zandio M. Insight dimensions and cognitive function in psychosis: a longitudinal study. BMC Psychiatry. 2006;6:26.
63. Simon AE, Berger GE, Giacomini V, Ferrero F, Mohr S. Insight, symptoms and executive functions in schizophrenia. Cogn Neuropsychiatry. 2006;11:437-51.
64. Lysaker PH, Whitney KA, Davis LW. Awareness of illness in schizophrenia: associations with multiple assessments of executive function. J Neuropsychiatry Clin Neurosci. 2006;18:516-20.
65. Sim K, Chua TH, Chan YH, Mahendran R, Chong SA. Psychiatric comorbidity in first episode schizophrenia: a 2 year, longitudinal outcome study. J Psychiatr Res. 2006;40:656-63.
66. Bora E, Sehitoglu G, Aslier M, Atabay I, Veznedaroglu B. Theory of mind and unawareness of illness in schizophrenia: is poor insight a mentalizing deficit? Eur Arch Psychiatry Clin Neurosci. 2007;257:104-11.
67. Jovanovski D, Zakzanis KK, Atia M, Campbell Z, Young DA. A comparison between a researcher-rated and a self-report method of insight assessment in chronic schizophrenia revisited: a replication study using the SUMD and SAIQ. J Nerv Ment Dis. 2007;195:165-9.
68. Varga M, Magnusson A, Flekkøy K, David AS, Opjordsmoen S. Clinical and neuropsychological correlates of insight in schizophrenia and bipolar I disorder: does diagnosis matter? Compr Psychiatry. 2007;48:583-91.
69. Bell M, Fiszdon J, Richardson R, Lysaker P, Bryson G. Are self-reports valid for schizophrenia patients with poor insight? Relationship of unawareness of illness to psychological self-report instruments. Psychiatry Res. 2007;151:37-46.
70. Faragian S, Kurs R, Poyurovsky M. Insight into obsessive-compulsive symptoms and awareness of illness in adolescent schizophrenia patients with and without OCD. Child Psychiatry Hum Dev. 2008;39:39-48.
71. Poyurovsky M, Faragian S, Kleinman-Balush V, Pashinian A, Kurs R, Fuchs C. Awareness of illness and insight into obsessive-compulsive symptoms in schizophrenia patients with obsessive-compulsive disorder. J Nerv Ment Dis. 2007;195:765-8.
72. Sim K, Chan YH, Chong SA, Siris SG. A 24-month prospective outcome study of first-episode schizophrenia and schizoaffective disorder within an early psychosis intervention program. J Clin Psychiatry. 2007;68:1368-76.
73. Fraguas D, Mena A, Franco C, Martín-Blas MM, Nugent K, Rodríguez-Solano JJ. Attributional style, symptomatology and awareness of illness in schizophrenia. Psychiatry Res. 2008;158:316-23.
74. Monteiro LC, Silva VA, Louzã MR. Insight, cognitive dysfunction and symptomatology in schizophrenia. Eur Arch Psychiatry Clin Neurosci. 2008;258:402-5.
75. Tranulis C, Lepage M, Malla A. Insight in first episode psychosis: who is measuring what? Early Interv Psychiatry. 2008;2:34-41.
76. Lepage M, Buchy L, Bodnar M, Bertrand M-C, Joober R, Malla A. Cognitive insight and verbal memory in first episode of psychosis. Eur Psychiatry. 2008;23:368-74.
77. Roe D, Hasson-Ohayon I, Kravetz S, Yanos PT, Lysaker PH. Call it a monster for lack of anything else: narrative insight in psychosis. J Nerv Ment Dis. 2008;196:859-65.
78. Dias VV, Brissos S, Carita AI. Clinical and neurocognitive correlates of insight in patients with bipolar I disorder in remission. Acta Psychiatr Scand. 2008;117:28-34.
79. Dias VV, Brissos S, Frey BN, Kapczinski F. Insight, quality of life and cognitive functioning in euthymic patients with bipolar disorder. J Affect Disord. 2008;110:75-83.
80. Karow A, Pajonk F-G, Reimer J, Hirdes F, Osterwald C, Naber D, et al. The dilemma of insight into illness in schizophrenia: self- and expert-rated insight and quality of life. Eur Arch Psychiatry Clin Neurosci. 2008;258:152-9.
81. Bayard S, Capdevielle D, Boulenger J-P, Raffard S. Dissociating self-reported cognitive complaint from clinical insight in schizophrenia. Eur Psychiatry. 2009;24:251-8.
82. Choudhury S, Khess CRJ, Bhattacharyya R, Sanyal D. Insight in schizophrenia and its association with executive functions. Indian J Psychol Med. 2009;31:71-6.
83. Kobayashi H, Morita K, Takeshi K, Koshikawa H, Yamazawa R, Kashima H, et al. Effects of aripiprazole on insight and subjective experience in individuals with an at-risk mental state. J Clin Psychopharmacol. 2009;29:421-5.
84. Parellada M, Fraguas D, Bombín I, Otero S, Castro-Fornieles J, Baeza I, et al. Insight correlates in child- and adolescent-onset first episodes of psychosis: results from the CAFEPS study. Psychol Med. 2009;39:1433-45.
85. Pousa E, Duñó R, Blas Navarro J, Ruiz AI, Obiols JE, David AS. Exploratory study of the association between insight and Theory of Mind (ToM) in stable schizophrenia patients. Cogn Neuropsychiatry. 2008;13:210-32.
86. Shabani A, Koohi-Habibi L, Nojomi M, Chimeh N, Ghaemi SN, Soleimani N. The Persian bipolar spectrum diagnostic scale and mood disorder questionnaire in screening the patients with bipolar disorder. Arch Iran Med. 2009;12:41-7.
87. Varga M, Babovic A, Flekkoy K, Ronneberg U, Landro NI, David AS, et al. Reduced insight in bipolar I disorder: neurofunctional and neurostructural correlates: a preliminary study. J Affect Disord. 2009;116:56-63.
88. Capdevielle D, Raffard S, Bayard S, Garcia F, Baciu O, Bouzigues I, et al. Competence to consent and insight in schizophrenia: is there an association? A pilot study. Schizophr Res. 2009;108:272-9.
89. Diaz-Marsá M, Sánchez S, Rico-Villademoros F. Effectiveness and tolerability of oral ziprasidone in psychiatric inpatients with an acute exacerbation of schizophrenia or schizoaffective disorder: a multicenter, prospective, and naturalistic study. J Clin Psychiatry. 2009;70:509-17.
90. Kim S-W, Shin I-S, Kim J-M, Lee S-H, Lee Y-H, Yang S-J, et al. Effects of switching to long-acting injectable risperidone from oral atypical antipsychotics on cognitive function in patients with schizophrenia. Hum Psychopharmacol. 2009;24:565-73.
91. • Dassa D, Boyer L, Benoit M, Bourcet S, Raymondet P, Bottai T. Factors associated with medication non-adherence in patients suffering from schizophrenia: a cross-sectional study in a universal coverage health-care system. Aust N Z J Psychiatry. 2010;44:921-8. This study reported that insight was one of the most important features associated with non-adherence in schizophrenia.
92. Nakamae T, Kitabayashi Y, Okamura A, Shibata K, Iwahashi S, Naka F, et al. Insight and quality of life in long-term hospitalized Japanese patients with chronic schizophrenia. Psychiatry Clin Neurosci. 2010;64:372-6.
93. Buchy L, Czechowska Y, Chochol C, Malla A, Joober R, Pruessner J, et al. Toward a model of cognitive insight in first-episode psychosis: verbal memory and hippocampal structure. Schizophr Bull. 2010;36:1040-9.
94. Aspiazu S, Mosquera F, Ibañez B, Vega P, Barbeito S, López P, et al. Manic and depressive symptoms and insight in first episode psychosis. Psychiatry Res. 2010;178:480-6.
95. Kim S-W, Kim S-J, Mun J-W, Bae K-Y, Kim J-M, Kim S-Y, et al. Psychosocial factors contributing to suicidal ideation in hospitalized schizophrenia patients in Korea. Psychiatry Investig. 2010;7:79-85.
96. Beck E-M, Cavelti M, Kvrgic S, Kleim B, Vauth R. Are we addressing the « right stuff » to enhance adherence in schizophrenia? Understanding the role of insight and attitudes towards medication. Schizophr Res. 2011;132:42-9.
97. Braw Y, Sitman R, Sela T, Erez G, Bloch Y, Levkovitz Y. Comparison of insight among schizophrenia and bipolar disorder patients in remission of affective and positive symptoms: analysis and critique. Eur Psychiatry. 2012;27(8):612-8.
98. Bressi C, Porcellana M, Marinaccio PM, Nocito EP, Ciabatti M, Magri L, Altamura AC. The association between insight and symptoms in bipolar inpatients: an Italian prospective study. Eur Psychiatry. 2012;27(8):619-24.
99. González-Suárez B, Gomar JJ, Pousa E, Ortiz-Gil J, García A, Salvador R, et al. Awareness of cognitive impairment in schizophrenia and its relationship to insight into illness. Schizophr Res. 2011;133:187-92.
100. Parellada M, Boada L, Fraguas D, Reig S, Castro-Fornieles J, Moreno D, et al. Trait and state attributes of insight in first episodes of early-onset schizophrenia and other psychoses: a 2-year longitudinal study. Schizophr Bull. 2011;37:38-51.
101. Favrod J, Maire A, Bardy S, Pernier S, Bonsack C. Improving insight into delusions: a pilot study of metacognitive training for patients with schizophrenia. J Adv Nurs. 2011;67:401-7.
102. Antonius D, Prudent V, Rebani Y, D'Angelo D, Ardekani BA, Malaspina D, et al. White matter integrity and lack of insight in schizophrenia and schizoaffective disorder. Schizophr Res. 2011;128:76-82.
103. Brent BK, Giuliano AJ, Zimmet SV, Keshavan MS, Seidman LJ. Insight into illness in patients and caregivers during early psychosis: a pilot study. Schizophr Res. 2011;127:100-6.
104. Ayesa-Arriola R, Rodríguez-Sánchez JM, Morelli C, Pelayo-Terán JM, Pérez-Iglesias R, Mata I, et al. Insight dimensions in first-episode psychosis patients: clinical, cognitive, pre-morbid and socio-demographic correlates. Early Interv Psychiatry. 2011;5:140-9.
105. • Lysaker PH, Dimaggio G, Buck KD, Callaway SS, Salvatore G, Carcione A, et al. Poor insight in schizophrenia: links between different forms of metacognition with awareness of symptoms, treatment need, and consequences of illness. Compr Psychiatry. 2011;52:253-60. This work explores the links between insight and metacognition in schizophrenia.
106. Ekinci O, Ugurlu GK, Albayrak Y, Arslan M, Caykoylu A. The relationship between cognitive insight, clinical insight, and depression in patients with schizophrenia. Compr Psychiatry. 2012;53:195-200.
107. Rubio G, Marín-Lozano J, Ferre F, Martínez-Gras I, Rodriguez-Jimenez R, Sanz J, et al. Psychopathologic differences between cannabis-induced psychoses and recent-onset primary psychoses with abuse of cannabis. Compr Psychiatry. 2012;53(8):1063-70.
108. Trevisi M, Talamo A, Bandinelli PL, Ducci G, Kotzalidis GD, Santucci C, et al. Insight and awareness as related to psychopathology and cognition. Psychopathology. 2012;45:235-43.
109. Misdrahi D, Petit M, Blanc O, Bayle F, Llorca P-M. The influence of therapeutic alliance and insight on medication adherence in schizophrenia. Nord J Psychiatry. 2012;66:49-54.
110. Schaub D, Brüne M, Bierhoff H-W, Juckel G. Comparison of self- and clinician's ratings of personal and social performance in patients with schizophrenia: the role of insight. Psychopathology. 2012;45:109-16.
111. •• Faget-Agius C, Boyer L, Padovani R, Richieri R, Mundler O, Lançon C, et al. Schizophrenia with preserved insight is associated with increased perfusion of the precuneus. J Psychiatry Neurosci JPN. 2012;37:110125. This work is one of the first studies to propose a neurobiological understanding of insight.
112. McFarland J, Cannon DM, Schmidt H, Ahmed M, Hehir S, Emsell L, et al. Association of grey matter volume deviation with insight impairment in first-episode affective and non-affective psychosis. Eur Arch Psychiatry Clin Neurosci. 2013;263(2):133-41
113. Chan SKW, Chan KKS, Lam MML, Chiu CPY, Hui CLM, Wong GHY, et al. Clinical and cognitive correlates of insight in first-episode schizophrenia. Schizophr Res. 2012;135:40-5.
114. Majadas S, Olivares J, Galan J, Diez T. Prevalence of depression and its relationship with other clinical characteristics in a sample of patients with stable schizophrenia. Compr Psychiatry. 2012;53:145-51.
115. Ware J, Snow K, Kosinski M, Gandek B. SF-36 health survey manual and interpretation guide. Boston: New England Medical Center; 1993.
116. Kalantar JS, Talley NJ. The effects of lottery incentive and length of questionnaire on health survey response rates: a randomized study. J Clin Epidemiol. 1999;52:1117-22.
117. Eaker S, Bergström R, Bergström A, Adami HO, Nyren O. Response rate to mailed epidemiologic questionnaires: a population-based randomized trial of variations in design and mailing routines. Am J Epidemiol. 1998;147:74-82.
118. Gummesson C, Atroshi I, Ekdahl C. Performance of health-status scales when used selectively or within multi-scale questionnaire. BMC Med Res Methodol. 2003;3:3.
119. Fang J, Fleck MP, Green A, McVilly K, Hao Y, Tan W, et al. The response scale for the intellectual disability module of the WHOQOL: 5-point or 3-point? J Intellect Disabil Res. 2011;55:537-49.
120. Chachamovich E, Fleck MP, Power M. Literacy affected ability to adequately discriminate among categories in multipoint Likert Scales. J Clin Epidemiol. 2009;62:37-46.
121. Fitzpatrick R. Surveys of patient satisfaction: II-Designing a questionnaire and conducting a survey. BMJ. 1991;302:1129-32.
122. Drake RJ, Dunn G, Tarrier N, Bentall RP, Haddock G, Lewis SW. Insight as a predictor of the outcome of first-episode nonaffective psychosis in a prospective cohort study in England. J Clin Psychiatry. 2007;68:81-6.