The Personality Psychopathology-Five (PSY-5; Harkness & McNulty, 1994) is a model of individual differences relevant to adaptive functioning in both clinical and non-clinical populations. In this article, we review the development of the PSY-5 model (Harkness, 1992; Harkness & McNulty, 1994) and discuss the ways in which the PSY-5 model is…

In this study, the authors evaluated aspects of criterion validity and clinical utility of the grandiosity and vulnerability components of the Pathological Narcissism Inventory (PNI) using two undergraduate samples (N = 299 and 500). Criterion validity was assessed by evaluating the correlations of narcissistic grandiosity and narcissistic…

The benefits of early intervention for very young children with autism are now well established. Hand and hand with these interventions is the necessity of psychometrically sound diagnostic tools. Not only should these tools be instrumental in differentiating developmentally delayed and other at risk infants. These measures should also be…

This study evaluates the validity of derived measures of the psychopathic personality traits of Fearless Dominance and Impulsive Antisociality from the NEO Personality Inventory-Revised (NEO-PI-R; Costa & McCrae, 1992) using data from the Collaborative Longitudinal Personality Disorders Study (baseline N = 733). These 3 issues were examined:…

Research on adults indicates that perfectionistic self-presentation, the interpersonal expression of one's perfection, is associated with a variety of psychopathological outcomes independent of trait perfectionism and Big Five traits. The current article reports on the development and evidence for the validity of the subtest score interpretations…

In this study, we report on the development and psychometric evaluation of the Risk-Taking (RT) and Self-Harm (SH) Inventory for Adolescents (RTSHIA), a self-report measure designed to assess adolescent RT and SH in community and clinical settings. 651 young people from secondary schools in England ranging in age from 11.6 years to 18.7 years and…

Early childhood social-emotional assessment has traditionally focused on risk factors or psychopathology, and has less frequently examined protective factors that may serve to promote positive developmental outcomes for children. To advance conceptual models that include protective factors as key explanatory constructs, there is a need for…

Psychometric properties of Romanian translations of the "Behavior Problems Inventory-01" ("BPI-01"; Rojahn, Matson, Lott, Esbensen, & Smalls, 2001) and the "Nisonger Child Behavior Rating Form" ("NCBRF"; Aman, Tasse, Rojahn, & Hammer, 1996) were explored. Respondents completed the instruments for 115…

There is an abundance of research investigating Autism Spectrum Disorders (ASD) in children; however, little emphasis has been placed on ASD in adults, especially in regards to comorbid psychopathology. Although scales are available that measure comorbidity in adults with ID, what is needed are scales that measure comorbidity in adults with ID and…

The authors argue for a significant shift in how clinical psychology researchers conduct construct validation and theory validation tests. They argue that sound theory and validation tests can best be conducted on measures of unidimensional or homogeneous constructs. Hierarchical organizations of such constructs are useful descriptively and…

Reliability is a property of test scores from individuals who have been sampled from a well-defined population. Reliability indices, such as coefficient and related formulas for internal consistency reliability (KR-20, Hoyt's reliability), yield lower bound reliability estimates when (a) subjects have been sampled from a single population and when…

This study presents evidence on the reliability and construct validity of the Dutch version of the Youth Psychopathic traits Inventory (YPI), a self-report instrument for psychopathic traits in adolescent boys and girls. In a sample of 776 Dutch non-referred adolescents, the YPI was found to have good internal consistency. Furthermore, exploratory…

We tested the psychometric properties of the Hypomania Checklist (HCL-32) in a sample of nonclinical adolescents, examined the association with current psychopathology, and tested if "hypomanic" adolescents differ from other participants regarding HCL-scores and psychopathology. A total of 294 students completed the HCL-32 and the SDQ, a…

Autism spectrum disorders (ASD) and intellectual disabilities (ID) are high prevalence developmental disabilities that co-occur at high rates. Furthermore, Axis I psychopathology is known to occur more frequently in individuals with ID than the general population. The problems are lifelong and can be major impediments to independent living.…

The success of early intervention programs has in large part spurred increasing emphasis on identifying children with autism and Pervasive Developmental Disorder-Not Otherwise Specified (PDD-NOS) at the earliest possible ages. National and international professional groups have called for early screening and diagnosis, yet the technology to…