Originally, psychology was knowledge of the human soul. The word psychology comes from Greek’s “psyche”, which means “breathing, spirit, self” and “logia” which means “knowledge of”. As a science, psychology aims to describe how and why people think, feel and act in various ways. The subject has a broad base in which biological, neurological, cognitive, social and cultural perspectives are used to create understanding of human thought and behaviour. This perspective is represented through sub-disciplines within psychology, such as social psychology, development psychology, cognition psychology, and works and organisation psychology. Each sub-discipline focuses on understanding humans from its specific perspective.
Research in Psychology is empirically oriented, which means that understanding is created by systematically investigating how people actually think and behave. A number of methods are used for this purpose, such as experiments, interviews, observations and questionnaires. The methods may have a qualitative character, but often include psychological investigations, quantitative methods and statistics.