title: Psychometric properties of a culture-adapted Spanish version of AIDA (Assessment of Identity Development in Adolescence) in Mexico.
abstract: BACKGROUND
  The construct "identity" was discussed to be integrated as an important criterion for diagnosing personality disorders in DSM-5. According to Kernberg, identity diffusion is one of the relevant underlying structures in terms of personality organization for developing psychopathology, especially borderline personality disorder. Therefore, it would be important to differentiate healthy from pathological development already in adolescence. With the questionnaire termed AIDA (Assessment of Identity Development in Adolescence), a reliable and valid self-rating inventory was introduced by Goth, Foelsch, Schlueter-Mueller, & Schmeck (2012) to assess pathology-related identity development in healthy and disturbed adolescents. To test the usefulness of the questionnaire in Mexico, we contributed to the development of a culture-specific Spanish translation of AIDA and tested the reliability and aspects of validity of the questionnaire in a juvenile Mexican sample.
  
  
  METHODS
  An adapted Spanish translation of AIDA was developed by an expert panel from Chile, Mexico, and Spain in cooperation with the original authors, focusing on content equivalence and comprehensibility by considering specific idioms, life circumstances, and culture-specific aspects. The psychometric properties of the Spanish version were first tested in Mexico. Participants were 265 students from a state school (N = 110) and private school (N = 155), aged between 12 and 19 years (mean 14.15 years). Of these, 44.9% were boys and 55.1% were girls. Item characteristics were analyzed by several parameters, scale reliability by Cronbach's Alpha, and systematic effects of gender, age, and socioeconomics by an analysis of variance (ANOVA). We evaluated aspects of criterion validity in a juvenile justice system sample (N = 41) of adolescent boys in conflict with the law who displayed various types of behavioral problems by comparing the AIDA scores of a subgroup with signs for borderline pathology (N = 14) with the scores obtained in the student sample using T-tests.
  
  
  RESULTS
  The psychometric properties of the Spanish version of AIDA proved satisfactory in the Mexican sample for items as well as scales. The reliability coefficients were α = .94 for the total scale "Identity Diffusion", α = .85 and .92 for the two primary scales "Discontinuity" and "Incoherence", and between α = .70 and .83 for the subscales. However, some items of the item pool in the Spanish version of AIDA did not meet all criteria for test equivalence and should thus be reformulated, taking the Mexican culture into account. Significant effects for gender and age were found. In line with our theory, the AIDA scores in the domains "Discontinuity" (high effect size) and "Incoherence" (medium effect size) were markedly higher in the delinquent boys than in the student group.
  
  
  CONCLUSIONS
  The Spanish version of AIDA can be used in Mexico with satisfying psychometric properties, with only minor adaptions required. Our study contributes to the intercultural applicability of the AIDA instrument using the construct "identity integration vs. diffusion" as it was defined in the AIDA model for diagnostic purposes. Cultural differences, even those present in the various Spanish-speaking countries, should be modeled carefully.
authors.affiliation: Mexican Institute of Transference Focused Psychotherapy, Iberoamerican University, Mexico City, Mexico.
authors.forename: Moises
authors.initials: M
authors.lastname: Kassin
authors.affiliation: Mexican Institute of Public Health Cuernavaca, México City, Mexico.
authors.forename: Filipa
authors.initials: F
authors.lastname: De Castro
authors.affiliation: Borderline Personality Disorder Clinic, National Psychiatry Institute "Ramón de la Fuente Muñiz", México City, Mexico.
authors.forename: Ivan
authors.initials: I
authors.lastname: Arango
authors.affiliation: Child and Adolescent Psychiatric Hospital, Psychiatric University Hospitals, Basel, Switzerland.
authors.forename: Kirstin
authors.initials: K
authors.lastname: Goth
keywords: Adolescence; Cross-cultural; Cultural test adaption; Identity; Psychometrics; Questionnaire
references.citation: J Pers Disord. 2007 Apr;21(2):199-224
references.pmid: 17492921
references.citation: Child Adolesc Psychiatry Ment Health. 2012 Jul 19;6(1):27
references.pmid: 22812911
references.citation: Eur Child Adolesc Psychiatry. 2009 Sep;18(9):575-81
references.pmid: 19390770
references.citation: J Am Acad Child Adolesc Psychiatry. 2004 Jan;43(1):97-104
references.pmid: 14691365
references.citation: Harv Rev Psychiatry. 1996 Jan-Feb;3(5):254-67
references.pmid: 9384955
references.citation: Arch Gen Psychiatry. 2002 Dec;59(12):1133-43
references.pmid: 12470130
references.citation: J Am Acad Child Adolesc Psychiatry. 2004 Apr;43(4):430-9
references.pmid: 15187803
references.citation: Sante Ment Que. 2008 Spring;33(1):37-60
references.pmid: 18795195
references.citation: Bull Menninger Clin. 2006 Spring;70(2):160-70
references.pmid: 16753038
references.citation: J Pers Disord. 2005 Jun;19(3):315-38
references.pmid: 16175740
references.citation: Bull Menninger Clin. 2003 Fall;67(4):314-27
references.pmid: 14733448