Structural models of psychopathology provide dimensional alternatives to traditional
categorical classification systems. Competing models, such as the bifactor and correlated …

Multivariate behavioral research often focuses on latent constructs—such as motivation, self-
concept, or wellbeing—that cannot be directly observed. Typically, these latent constructs …

In exploratory factor analysis (EFA), cross-loadings frequently occur in empirical research,
but its effects on determining the number of factors to retain are seldom known. In this paper …

In contrast to historical conceptualizations that framed psychological disorders as distinct,
categorical conditions, it is now widely understood that co-and multi-morbidities between …

To examine the construct validity of attention-deficit/hyperactivity disorder (ADHD) and
oppositional defiant disorder (ODD), the bifactor S-1 approach has been applied as an …

Objective: Whether children with attention deficit hyperactivity disorder (ADHD) have deficits
in sustained attention remains unresolved due to the ongoing use of cognitive paradigms …

Background: In the past decade, the bifactor model of attention-deficit/hyperactivity disorder
(ADHD) has been extensively researched. This model consists of an ADHD general …

Objective: To test explanations for the underrecognition of female ADHD by examining
differences in adult ratings of boys and girls matched for levels of directly observed ADHD …

An attention disturbance is a problem that affects many school-aged children. The
assessment in children is usually report-based, and as a result, controversy surrounds the …

The trait impulsivity theory suggests that a single, highly heritable externalizing liability
factor, expressed as temperamental trait impulsivity, represents the core vulnerability for …