Abstract. The aim of this study was to analyze the psychometric properties of the Questionnaire about Interpersonal Difficulties for Adolescents (QIDA; Inglés, Méndez, & Hidalgo, 2000 ). In Study 1, the questionnaire was administered to a sample of 4,240 high school pupils. Exploratory factor analysis identified five factors accounting for 42.86% of the variance: Assertiveness, Heterosexual Relationships, Public Speaking, Family Relationships, and Close Friendships. Internal consistency was high (.90). In Study 2, 538 high school pupils answered a set of social anxiety and personality self-report measures. Test-retest reliability, over a 2-week period, was adequate (.78). Correlations between the QIDA and the Personal Report of Confidence as Speaker (r = .43), the Social Phobia and Anxiety Inventory (r = .61), and the Eysenck Personality Questionnaire (r = -.38, Extraversion; r = .34, Neuroticism) were statistically significant. A significant difference was found between the total QIDA score for adolescents with and without social phobia (d = 1.53) supporting the construct validity of the questionnaire.

Este trabajo describe la elaboración y las propiedades psicométricas de una nueva medida de autoinforme destinada a detectar el nivel de dificultad que presentan los adolescentes en sus relaciones interpersonales. El Cuestionario de Evaluación de Dificultades Interpersonales en la Adolescencia (CE-DIA) está compuesto por 39 ítems distribuidos en cinco factores: Aserción, Relaciones con el otro Sexo, Relaciones con Iguales, Hablar en Público y Relaciones Familiares, que explican el 32.92% de la varianza. El estudio de la fiabilidad indica que el CEDIA posee una elevada consistencia interna (α = .91). Los análisis de varianza revelan que las chicas presentan un mayor nivel de dificultad en las relaciones interpersonales que los chicos, pero no existen diferencias en función de la edad ni de la interacción sexo-edad. Questionnaire about interpersonal difficulty for adolescents. This study describes the elaboration and the psychometric properties of a new self-report measure developed to identify the level of difficulty that adolescents show in their interpersonal relationships. The Cuestionario de Evaluación de Dificultades Interpersonales en la Adolescencia (CEDIA) is composed of 39 items grouped in five factors: Assertiveness, Heterosocial Relationships, Peer Relationships, Public Speaking and Family Relationships, that accounted for 32.92% of the total variance. The results indicate that the CEDIA has a high internal consistency (α = .91). Two-way analysis of variance found significant differences on gender, showing that females had higher level of difficulty in interpersonal relationships than males, but neither differences in age nor gender¥age interaction were found.

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Summary: This study analyzes the psychometric properties of the Spanish translation of the Matson Evaluation of Social Skills with Youngsters (MESSY; Matson, Rotatori & Helsel, 1983 ), which assesses the degree of appropriate social behavior. This social behavior self-report was applied to a sample of 634 adolescents between the ages of 12 and 17. The exploratory factor analysis isolated four factors: Aggressiveness/Antisocial Behavior, Social Skills/Assertiveness, Conceit/Haughtiness, and Loneliness/Social Anxiety, which accounted for the 33.28% variance. The internal consistency was high (α = .88). Correlations with similar self-reports, the Assertiveness Scale for Adolescents, the Teenage Inventory of Social Skills, and the Assertiveness Scale for Children and Adolescents, were statistically significant. Inappropriate social behavior measured with the MESSY correlated positively with the Psychoticism and Neuroticism scales, and negatively with the Extraversion scale of the Eysenck Personality Questionnaire. Female adolescents obtained lower scores in Aggressiveness/Antisocial Behavior and in Conceit/Haughtiness, and higher scores in Social Skills/Assertiveness, displaying greater appropriate social behavior than male adolescents. No significant differences were found for gender in Loneliness/Social Anxiety, the only factor in which a worsening with age and a significant gender× age interaction effect were found.

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