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CIVJIG 12.30 Expert Testimony

Opinion testimony

Most witnesses are allowed to testify only about what they saw, heard, or experienced. Usually, they are not allowed to give their opinions.

But some witnesses are allowed to give their opinions, because they have special training, education, and experience.

When a witness gives an opinion, you should consider the following guidelines:

1. What are the education, training, experience, knowledge, and ability of the witness?

2. What reasons are given for the opinion?

3. What are the sources of the information?

4. What are the guidelines already given to you for any testimony?

You need not give this opinion testimony any more importance than other evidence.