I think most children start to have their own opinions when they are in primary school, maybe around six to ten years old. At this age, they begin to think for themselves and sometimes question what adults say. School also encourages them to speak up and share their ideas, so they slowly become more independent in their thinking.

I think teenagers are more likely to have strong opinions. When they are around eleven to eighteen, they are influenced by friends and social media, and they want to be different from their parents. Teenagers are usually more confident to say what they think and stand up for their ideas.

It really depends on the child. Some kids are naturally more independent and start sharing their opinions early, while others are shy and take longer. Family and culture also matter a lot. If parents encourage children to speak up, they will probably have their own opinions sooner.