Development can refer to maturity in terms of physical, cognitive, language, social-emotional, temperament, or fine and gross motor skills development.
发育可以指身体、认知、语言、社会情感、气质，或精细和大运动技能的发育。
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To test this idea, they looked at six people with damage to the VMPC on both sides of their brains. These people are known from other work to have poor social-emotional responses.
While many programs designed for preschoolers focus primarily on social and emotional factors, some are geared mainly toward promoting cognitive gains.