If your child is refusing to cooperate, there are a few things you can do to try and encourage them to participate. First, try to find out why they are resistant. It could be that the task is too difficult, or they may not understand what is expected of them. If you can identify the issue, you can then work on addressing it. If the task is too challenging, break it down into smaller steps so they can feel successful. If they don't understand what is expected, provide clear and concise instructions.
You can also try using positive reinforcement to encourage cooperation. This could involve offering praise or rewards for completing the task at hand. For younger children, this could be something as simple as a sticker or stamp; for older kids, you might offer privileges such as extra screen time. The key is to make sure the reward is something that your child values and will be motivated by.
If your child continues to refuse to cooperate despite your best efforts, it may be necessary to seek professional help. A therapist or counselor can work with your family to identify underlying issues and develop strategies for dealing with resistance.