Fig. 3From: Social-emotional problems among Swedish three-year-olds: an Item Response Theory analysis of the Ages and Stages Questionnaires: Social-EmotionalThe Test Information Function (TIF) to explore the amount of the information from all items in the first edition of the Ages and Stages Questionnaires: Social-Emotional (ASQ:SE) for 36-month interval, across the social-emotional traitBack to article page