The Bayley Scales of Infant and Toddler Development™ (4th ed.; Bayley™-4) assesses infant and toddler development across five scales: Cognitive, Language, Motor, Social-Emotional, and Adaptive Behavior.
Administration of the Cognitive, Language, and Motor items includes administering structured items to the child and utilizing the caregiver’s description of the child’s behavior outside of the testing environment.
Information for the Social-Emotional and Adaptive Behavior Scales is collected from a primary caregiver using the Social-Emotional and Adaptive Behavior Questionnaire.
Entering Bayley-4 Cognitive, Language, and Motor Scales Scores
Entering Bayley-4 Social-Emotional and Adaptive Behavior Scales Scores