Exploratory factor analysis is widely used for item analysis in the earlier stages of scale
development, usually with large pools of items. In this scenario, the presence of …

In recent years, some models for binary and graded format responses have been proposed
to assess unipolar variables or “quasi-traits.” These studies have mainly focused on clinical …

When developing new questionnaires, it is traditionally assumed that the items should be as
discriminative as possible, as if this was always indicative of their quality. However, in some …

Suicide is a leading cause of death in college-aged youth, yet only half of all college
students report engaging in professional mental health help-seeking. We examined how the …

Cuando se desarrollan nuevos cuestionarios, tradicionalmente se asume que los ítems
deben ser lo más discriminativos posible, como si esto fuera siempre indicativo de su …

Most IRT applications in personality assume that the measured trait is a bipolar dimension,
normally distributed in the population. These assumptions, however, could be questionable …

The Graded Response model (GRM; Samejima, 1969) and the continuous response model
(CRM; Bejar, 1977, Samejima, 1973, Wang & Zeng, 1998), are unidimensional Item …