Developmental stages and milestones — physical, cognitive, social, emotional, language

Child development means the orderly, progressive change in a child from conception to adolescence. Growth refers mainly to measurable physical increase, such as height, weight and body proportions, while development includes qualitative changes in movement, thinking, language, emotions and social behaviour. In objective exams, the important point is that development is continuous but not perfectly uniform. A child may progress faster in language than in motor coordination, or may show age-appropriate social play while still needing help with fine motor tasks.

Development follows recognised principles. It proceeds from head to foot, called the cephalocaudal principle, and from the centre of the body to the extremities, called the proximodistal principle. General movement appears before refined movement: an infant waves the arm before using a neat pincer grasp. Development also moves from simple to complex behaviour and from dependence to increasing autonomy. Heredity provides the biological potential, but nutrition, stimulation, illness, family care, early learning opportunities and safety shape how that potential is expressed. For a Mahila Supervisor, these principles matter because anganwadi observation must distinguish normal variation from delay requiring referral.

Core takeaway: development is multidimensional, patterned and influenced by both maturation and environment.