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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.
Developmental disability is a diverse group of chronic conditions, comprising mental or physical impairments that arise before adulthood. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in "language, mobility, learning, self-help, and independent living". [1]
Global developmental delay is an umbrella term used when children are significantly delayed in two or more areas of development. It can be diagnosed when a child is delayed in one or more milestones, categorised into motor skills , speech , cognitive skills, and social and emotional development. [ 1 ]
The scientific study of the causes of developmental disorders involves many theories. Some of the major differences between these theories involves whether environment disrupts normal development, if abnormalities are pre-determined, or if they are products of human evolutionary history which become disorders in modern environments (see evolutionary psychiatry). [5]
Research in developmental neuropsychology can generally be divided into two categories that are based on two main goals of the field: educational and clinical.The educational approach aims to understand and aid in the education of developing children (or in some cases adults) whom have deficits learning certain skills, most commonly language related – reading and writing.
Development and behavior require measurement with quality instruments if we are to detect delays and disabilities. Failing to measure at each well-visit. Development develops and developmental problems do to.
Established in 1896, American Journal on Intellectual and Developmental Disabilities (AJIDD) is a multidisciplinary journal for reporting original contributions of the highest quality on intellectual disability, its causes, treatment, and prevention. Like its parent organization, the journal has had multiple names through its history.
In the behavioral model, development is considered a behavioral change. It is dependent on the kind of stimulus and the person's behavioral and learning function. [5] Behavior analysis in child development takes a mechanistic, contextual, and pragmatic approach. [6] [7]