Manoeuvres are based on evidence-based literature on milestone acquisition. Evidence-based milestone ages (PCH). They are not a developmental screen, but rather an aid to developmental surveillance. They are set after the time of typical milestone acquisition. Thus, absence of any one or more items is considered a high-risk marker and indicates consideration for further developmental assessment, as does parental or caregiver concern about development at any stage. Assessment tools Table 4 (CPS) | Global Delay (CPS)

• Best Start website contains resources for maternal, newborn, and early child development
• Getting it right at 18 months (CPS) | Measuring in support of early childhood development (CPS)
• Identifying and treating speech & language delays (PCH) | Encyclopedia on Early Childhood Development