How the Affective Reactivity Index (ARI) works for teachers as informants

The Affective Reactivity Index (ARI) is a brief instrument originally designed as a self- and parent report. However, the view of teachers, who can observe social situations that may give rise to irritability, is relevant. The goal is to provide the measurement qualities of the ARI score as reported by teachers. Children formed part of a longitudinal study on behavior problems in Barcelona (Spain) and they were assessed when they were 7 (N =...