Infant and toddler psychological development, also known as neuropsychological development, includes perception, movement, language, adaptive behavior, and social skills. Tests of neurobehavioral development in infants and toddlers become developmental tests or developmental assessments. Intelligence tests for children are: tests that identify observed behaviors using normal child behavior patterns as a standard. What is the concept of an intelligence test? It is a scientific measure of a person’s intelligence and is a type of psychological measurement that tests a person’s thinking ability, imagination, memory, observation, attention and other cognitive abilities, or general intelligence. Why is it important for children to have regular intelligence assessments? Regular intelligence and psychological examinations of children not only provide an understanding of the child’s development at this stage, but also provide timely guidance and training for any problems found; the examinations also provide parents with early education methods. In addition, intelligence checkups are useful for early intervention to determine children’s learning difficulties, ADHD and attention deficits, and for early guidance and training. At what age can children have an IQ test? We now have different intelligence assessment scales for children of different ages from 0-16 years old; we recommend that children have an intelligence assessment once in June, September and 1 year after birth, once every six months from 1-3 years old and once a year after 3 years.