Most of the common traits of highly intelligent people are :-

1.   They have high intuition power .They can make quick decision with little or no data.

2.   They have very good analytical skills and ability to process data in their minds.They usually are able to interpret data well , gather facts and propose workable solution .

3.   They have very good judgement capability that is to filter what is right from wrong or ability to discard unnecessary things.

4.   They are flexible with their believe system and in their approach. Don't have strong fixed mindset attached to few things unlike others.They accept other viewpoint but know what is correct as they have ability to judge things and have good reasoning power.

5.   Most of them are good in all subjects taught in school ,which is why they generally score high on many subjects Social Science,Science, Mathematics, History, Biology etc. exception are always there.

6.   They are good observers.

7.   Most of them have minds always working so they are over thinkers and thus they sleep less in comparison to other people.

8.   Most of them are multi-talented .They can be writer and painter at the same time.They can be good in studies or in singing,art, dancing, some sports etc. at the same time. Example :Leonardo da Vinci, ( photo attached) was good in invention, sculpting, music ,science, painting, architecture etc. Steve jobs loved technology and art which is evident from Apple computer design besides this he was producer of animation films like Toy Story & Finding nemo and had great communication skills.