Xavier Mendez

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This research describes the psychometric properties of a new child self-report measure, the separation anxiety scale for children (SASC), which assesses the frequency of symptoms of separation anxiety in children from 8 to 11. The factor solution with a sample of 1,201 children from 8 to 11, isolated three factors, discomfort from separation, worry about(More)
INTRODUCTION Anxiety symptoms in childhood and adolescence are an important risk factor for developing anxiety disorders in subsequent development stages. This study examines the frequency and characteristics of the symptoms of the principal anxiety disorders in children and adoloscents using a self-report questionnaire based on the diagnostic categories of(More)
The purpose of this study was to investigate the factorial structure and psychometric properties of the Spence Children's Anxiety Scale (SCAS) in a sample of 1,708 Spanish children aged between 8 and 12 years. The SCAS was demonstrated to have satisfactory internal consistency with the Spanish sample, and factor analysis confirmed the six-factor original(More)
Using the VIRMETADEN (acronym derived from virus adsorption enumeration) method to count cytopathogenic viruses adsorbed to cellulose nitrate membrane filters from prefiltered and decontaminated sewage samples was shown to be feasible. The numbers of naturally occurring enteroviruses recovered by the VIRMETADEN method were significantly higher than those(More)
The aim of this study was to investigate the factorial structure and psychometric properties of the Separation Anxiety Assessment Scale (SAAS) with Spanish schoolchildren. The participants in Study 1 were 1281 children aged 8-11. Exploratory factor analysis identified four factors: worry about calamitous events, fear of abandonment, fear of being alone, and(More)
The Spence Children's Anxiety Scale is an instrument widely applied in the assessment of the most common anxiety disorders in children and adolescents. This study examines its psychometric properties and the factorial structure in a large community sample of Spanish-speaking adolescents (N = 1,374) aged 13 to 17 years. The scale demonstrated strong internal(More)
This study describes the psychometric properties of the Children's Separation Anxiety Scale (CSAS), which assesses separation anxiety symptoms in childhood. Participants in Study 1 were 1,908 schoolchildren aged between 8 and 11. Exploratory factor analysis identified four factors: worry about separation, distress from separation, opposition to separation,(More)
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