1. The spirit of enquiry
2. Experimentation
3. Objectivity
4. Fearlessness
5. Integrity. (To own up mistakes, not to steal credit, etc)
6. Not to rest till a discovered difference between hypothesis and experimental result is satisfactorily explained.

When performing experiment or any scientific investigation you must apply some of the scientific attitude:
1.) Curiosity - ask questions about observations.
2.) humility
3.) honesty - report the results of the observations truthfully.
4.) open mindedness - accept the opinions of other.
5.) perseverance and patience - does not easily give up.
6.) inferring
7.) predicting
8.) classifying
9.) unbiased - separating his ideas from the actual one.