1. Observe children's behaviors, such as inattention, poor academic performance and emotional instability.
2. Observe the child's athletic ability, such as uncoordinated hands and feet, unstable walking and dislike of sports.
3. Observe children's language expression ability, such as unclear speech, small vocabulary and poor language organization ability;
4. Observe children's social skills, such as dislike of interacting with others and lack of self-confidence.