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Developmental norms are sometimes called milestones – they define the recognized development pattern that children are expected to follow. Each child develops in a unique way; however, using norms helps in understanding these general patterns of development while recognizing the wide variation between individuals.
The Gesell Developmental Schedules claimed that an appraisal of the developmental status of infants and young children could be made. The Gesell Developmental Schedule believes that human development unfolds in stages, or in sequences over a given time period. These stages were considered milestones, or the manifestations of mental development. [1]
The CDC has made updates to its list of developmental milestones and Yahoo Life asked a pediatrician to explain. ... Terms like "child development milestones" can cause anxiety in some parents ...
The Denver Developmental Screening Test (DDST) was introduced in 1967 to identify young children, up to age six, with developmental problems. A revised version, Denver II, was released in 1992 to provide needed improvements. These screening tests provide information about a range of ages during which normally developing children acquire certain ...
Developmental delay is prevalent in approximately 1-3% of children under the age of 5 worldwide. [5] According to a systematic analysis done for a conducted study in 2016, there are approximately 52.9 million children worldwide under the age of 5 that are affected by some type of developmental delay or delayed milestone.
The Bayley Scales of Infant and Toddler Development (version 4 was released September 2019) is a standard series of measurements originally developed by psychologist Nancy Bayley used primarily to assess the development of infants and toddlers, ages 1–42 months. [1]
It was validated both at the hospital and the community level against the standard Denver Developmental Screening Test. [2]With a sensitivity of 66.7% and specificity of 78.8%, it can be used even by community level health worker for mass screening and takes around 5 minutes to complete. [2]
Preventing, and intervening early, in developmental delays is a significant topic in the study of child development. Developmental delays are characterized by comparison with age variability of a milestone, not with respect to average age at achievement. [82]