Question

Explain physical and physiological changes that take place during different developmental stages.

Answer 1

Physical and physiological changes vary across developmental stages. The main stages described are early childhood, middle childhood, and adolescence.

1. Early childhood
   • From birth to about three years, children typically double in height and quadruple in weight.
   • They develop basic motor skills such as sitting, walking, using a spoon, and catching or throwing.
   • From three to five years, fine motor control improves, while skills such as skipping and balancing on one foot emerge.
   • Physical growth slows between five and eight years, as body proportions and motor skills become more refined. Cognitive and language development also progress rapidly.
2. Middle childhood
   • Growth is generally slow and steady until puberty; physical changes are less dramatic than in early childhood or adolescence.
   • The onset of puberty varies between individuals and generally begins earlier in females.
   • Cognitive development continues steadily. Children may develop enthusiasm for learning and motivation to build competence and self-esteem.
3. Adolescence
   • Usually considered the period from 12 to 18 years, adolescence is a second period of accelerated growth.
   • Individuals may gain about 15–20 centimetres in height and 8–10 kilograms in weight; the timing varies by individual and gender.
   • Females generally begin developing earlier than males. Sexual maturation is a major change during this stage.
   • Cognitive development also continues significantly.