Part A (Q1): Define Human Development.

Human development, in the context of psychology and social work, refers to the scientific study of the quantitative and qualitative changes that occur in people throughout their lifespan, from conception until death.

It encompasses three primary domains:

1. Physical Development: Changes in body size, proportions, appearance, and the functioning of body systems, including brain development and motor skills.
2. Cognitive Development: Changes in intellectual abilities, including attention, memory, academic and everyday knowledge, problem-solving, imagination, creativity, and language.
3. Psychosocial/Emotional Development: Changes in emotional communication, self-understanding, knowledge about other people, interpersonal skills, friendships, intimate relationships, and moral reasoning.

Unlike "growth," which refers purely to physical increase in size (a quantitative change), "development" implies a progressive series of orderly, coherent changes (both qualitative and quantitative) leading toward maturity.