Cross-cultural invariance of the factor structure of the Schizotypal Personality Questionnaire across Spanish and American college students.

The main goal of this study was to examine the cross-cultural invariance of the factor structure of the Schizotypal Personality Questionnaire (SPQ) (Raine, 1991) in two large samples of Spanish and American young adults. The final sample was made up of 2313 college students (508 men, 22%). Their mean age was 20.

Cross-cultural invariance of the factor structure of the Schizotypal Personality Questionnaire across Spanish and American college students.

The main goal of this study was to examine the cross-cultural invariance of the factor structure of the Schizotypal Personality Questionnaire (SPQ) (Raine, 1991) in two large samples of Spanish and American young adults. The final sample was made up of 2313 college students (508 men, 22%). Their mean age was 20.

Schizotypal personality questionnaire: new sources of validity evidence in college students.

Schizotypal traits represent the behavioral expression of vulnerability to psychosis in general population. Among the most widely used measurement instruments, we could find the Schizotypal Personality Questionnaire (SPQ) (Raine, 1991). However, some aspects of its psychometric quality have yet to be analyzed.

An updated review on burden on caregivers of schizophrenia patients.

Background: Schizophrenia is a debilitating mental illness that has a significant impact not only in the patient but also in the entire family as well. Caregivers assume almost the totality of the patient care. This responsibility exposes caregivers to an intense burden with negative consequences for them and the rest of the family system.

Psychometric properties of the AQ Aggression Scale in Chilean students.

Background: The Buss and Perry Aggression Questionnaire (AQ) evaluates aggressive behaviours and is used to assess manifestations of aggression.

Methods: At different points in time, 346 Chilean university students participated in the validation of the instrument, whose convergent validity was shown in relation to the scales of Psychological Aggression and Physical Aggression of the Conflict Tactics Scale 2 (CTS- 2), and the Salvo Impulsivity Scale. Discriminant validity was found when comparing the scores obtained from a group of students categorized as "Violent" with those of a control group, after a screening test.

A systematic review of the complex organization of human cognitive domains and their heritability.

Background: Models of cognition propose a hierarchical structure for human cognitive processes, in which the sequences of human action are organized into parts or subunits of analysis that can be grouped into progressively more complex, inclusive higher-order functions. This organizational structure from partial to whole may be reflected in the neural representations that underlie human behaviour, and in its genetic underpinnings. The objective of the present study was to explore a putative hierarchical organization of the genetic influences underlying cognitive domains.

Dimensionality of the Wisconsin Schizotypy Scales--brief forms in college students.

Wisconsin Schizotypy Scales are one of the most used measuring instruments for the assessment of psychometric risk for psychosis. The main goal of the present study was to analyze the internal structure of the Wisconsin Schizotypy Scales-Brief (WSS-B) forms and the reliability of the scores in a large sample of college students. The final sample was comprised by a total of 1349 students, 288 males, with a mean age of 20.

The assessment of positive dimension of the psychosis phenotype in college students.

The Wisconsin Schizotypy Scales are one of the most used measuring instruments for the assessment of psychometric risk for psychosis. The main goal of the present study was to analyze the reliability of the scores and to provide new sources of validity evidence for the brief version of the Magical Ideation Scale (MIS-B) and the Perceptual Aberration Scale (PAS-B). The final sample was comprised of a total of 1349 university students divided into two subsamples (n1=710; M=19.

Development of a computerized adaptive test for Schizotypy assessment.

Background: Schizotypal traits in adolescents from the general population represent the behavioral expression of liability for psychotic disorders. Schizotypy assessment in this sector of population has advanced considerably in the last few years; however, it is necessary to incorporate recent advances in psychological and educational measurement.

Objective: The main goal of this study was to develop a Computerized Adaptive Test (CAT) to evaluate schizotypy through "The Oviedo Questionnaire for Schizotypy Assessment" (ESQUIZO-Q), in non-clinical adolescents.

Cluster A maladaptive personality patterns in a non-clinical adolescent population.

Background: The prevalence and expression of Cluster A personality disorders in adolescence is poorly analyzed and understood. The main goal was to analyze the rate of Cluster A traits and maladaptive personality patterns in adolescents. In addition, the underlying dimensional structure and the possible influence of sex and age in its phenotypic expression were examined.

Cluster C maladaptive personality traits in a general population of adolescents.

Introduction: The prevalence of the Cluster C traits and personality disorders in adolescents has been poorly analyzed. The main goal of this research was to analyze the rate of the Cluster C traits and maladaptive personality patterns in a community sample of adolescents. We also examined the dimensional structure and the influence of sex and age in its phenotypic expression.

Cluster B maladaptive personality traits in Spanish adolescents.

Introducction: The prevalence and expression of Cluster B personality disorders during adolescence have been poorly analyzed. The main aim of this research was to analyze the rate of Cluster B maladaptive personality traits in Spanish adolescents. We also examined dimensional structure underlying the influence of sex and age in its phenotypic expression, was also examined.

Phenotypic expression of schizotypal traits in an adolescent population.

The main goal of the present study was to examine the influence of gender and age in the phenotypic expression of schizotypal traits in a community sample of adolescents. The sample was composed of a total of 1,618 participants, 776 (48%) males, with a mean age of 15.9 years (SD = 1.

Validation of the Community Assessment Psychic Experiences -42 (CAPE-42) in Spanish college students and patients with psychosis.

Psychotic-like experiences can be considered as a vulnerability marker for psychotic disorders. The psychometric assessment of the extended psychosis phenotype has advanced considerably in recent years, although it must continue to deepen the quality of self-reports available for its assessment in Spanish population. The main goal was to analyze the psychometric quality of the Community Assessment Psychic Experiences-42 (CAPE-42) in Spanish college students and patients with psychosis.

Reliability and sources of validity evidence of the Oviedo Schizotypy Assessment Questionnaire-Abbreviated (ESQUIZO-Q-A).

The main goal of this research was to examine the reliability and different sources of validity evidence of the Oviedo Schizotypy Assessment Questionnaire-Abbreviated (ESQUIZO-Q-A) in nonclinical adolescents. The final sample was made up of 1,455 participants, 705 males (48.5%), with a mean age of 15.

Psychometric properties of the Peters et al Delusions Inventory 21 in college students.

Delusions show high prevalence in the general population and can be considered a risk marker for psychotic disorders. Although the assessment of these experiences has made considerable progress in recent years, there is still room for improvement in the measurement quality of the self-reports available for such assessment. The goal of the present work was to analyze the measurement quality of the Peters et al Delusions Inventory 21 (PDI-21) in Spanish college students.

Relationship between schizotypal and borderline traits in college students.

The main objective of the present investigation was to analyze the relationship between self-reported schizotypal and borderline personality traits in a sample of 759 college students (M = 19.63 years; SD = 2.03).

Dimensional structure and measurement invariance of the youth self-report across gender and age.

Purpose: The aim of the present work was to examine the correlated eight-syndrome model of the Youth Self-Report (YSR) proposed by Ivanova et al [1], using a confirmatory factor analysis for ordinal data. Likewise, we explored the measurement invariance of the YSR across gender and age using multigroup comparisons, and checked whether there were differences in the latent means.

Methods: The sample was made up of 4,868 nonclinical adolescents (47.

Borderline personality traits in nonclinical young adults.

The main purpose of this study was to explore the dimensionality of the borderline personality disorder in nonclinical young adults by means of the Borderline Personality Questionnaire (BPQ; Poreh et al., 2006). We also studied the phenotypic expression of the borderline personality traits as a function of participants' gender and age, and the relationship between BPQ subscales and measures of depressive symptoms, anxiety, stress, hallucinatory predisposition, and paranoid ideation.

Schizotypy, emotional-behavioural problems and personality disorder traits in a non-clinical adolescent population.

The main goal of the present study was to examine the relationship between the schizotypy dimensions, emotional-behavioural problems and personality disorder traits in non-clinical general adolescent population. A total of 1455 participants (M=15.9years; S.

Sleep architecture in patients with fibromyalgia.

The main objective of this work was to evaluate the characteristics of sleep in patients diagnosed with fibromyalgia syndrome. Sleep architecture in 32 patients with fibromyalgia and 20 healthy controls was evaluated. Following the recommendations of the International Federation of Clinical Neurophysiology, polysomnographies were conducted with fibromyalgia patients and the control subjects.

Prevalence and characteristics of depressive symptomatology in non-clinical adolescents.

Introduction: Depressive symptoms are fairly common in children and adolescents, these varying according to gender and age.

Objective: The objective of the present study was to examine the prevalence of depressive symptoms based on gender and age in a representative sample of Spanish adolescents.

Method: Severity of depressive symptomatology was assessed using the Reynolds Depression Adolescent Scale (RADS).

Measurement invariance of the Schizotypal Personality Questionnaire-Brief across gender and age.

The purpose of this study was to examine the dimensional structure and measurement invariance of the Schizotypal Personality Questionnaire-Brief (SPQ-B) (Raine and Benishay, 1995) across sex and age in a representative sample of nonclinical adolescents and young adults. The sample consisted of 1789 adolescents and young adults (42.1% males), with a mean age of 17.

Schizotypal traits and depressive symptoms in nonclinical adolescents.

The main goal of this study was to examine the relationship between schizotypal personality traits and depressive symptoms in a sample of nonclinical adolescents. The Schizotypal Personality Questionnaire-Brief (J Personal Disord 1995;9:346-355) and the Reynolds Depression Adolescent Scale (Reynolds WM. Reynolds Adolescent Depression Scale.