Some key aspects of lifespan development include:

• Physical development - including growth in height and weight, changes in brain and nervous system functioning, and the development of gross and fine motor skills.
• Cognitive development - including the development of problem-solving, memory, language, and reasoning skills.
• Emotional development - including the development of emotional regulation, social and emotional intelligence, and emotional self-awareness.
• Social development - including the development of social relationships, communication skills, and the ability to participate in and contribute to society.

Lifespan development is an important area of study in psychology and human development, as it helps us understand how people change and grow throughout their lives.