Cognitive development refers to the process through which an individual acquires and refines their mental abilities, including learning, memory, problem-solving, perception, reasoning, and judgment. This process begins in early childhood and continues throughout one's lifetime as new experiences shape our thoughts, beliefs, and behaviors. Cognitive development is influenced by various factors such as genetics, environment, culture, education, and experience. It involves the growth of cognitive structures that enable us to understand and interact with the world around us, including language, concepts, and problem-solving skills.