You’ve probably seen a Likert Scale even if you don’t know the ubiquitous measurement tool by name. In its traditional form, a researcher presents a statement followed by five response options of ...

To enhance the clinical utility of the Perinatal Post-Traumatic Stress Disorder (PTSD) Questionnaire (PPQ), the current study sought to refine the measure by changing the item response options from ...

Early in testing, Guatemalan parents tended to choose answers at the extreme ends of response categories and socially desirable responses. Ultimately, a visual aid was developed to accompany ...