Table 1

A comparison of Bayley Scales of Infant and Toddler Development – Third Edition and other standardised measures of child development

Test	Age range	Behavioural assessment	Parent report	Ability test	Screening test	Cognitive	Motor	Language	Social- emotional	Adaptive behaviour	Executive function	Admin time
Bayley Scales of Infant and Toddler Development – Third Edition3	1–42 months	✓	✓	✓		✓	✓	✓	✓	✓		30–90 min
Ages and Stages Questionnaire17	1–66 months		✓		✓	✓	✓	✓		✓		10–15 min
Denver Developmental Screening Test18	0–6 years	✓			✓	✓	✓	✓		✓		20–30 min
Griffiths Scales of Child Development-III9	0–6 years	✓		✓		✓	✓	✓	✓	✓		~60 min
Mullen Scales of Early Learning10	0–68 months	✓		✓		✓	✓	✓				15–60 min
Parent Report of Children’s Abilities19	24 months		✓	✓		✓		✓				15 min
Peabody Developmental Motor Scales11	0–6 years	✓		✓			✓					45–60 min
Weschler Preschool and Primary Scales of Intelligence20	2.6–7.7 years	✓		✓		✓		✓			✓	30–60 min