Your best bet for an expert witness is a friendly nerd rather than an attractive scientist

And it doesn’t really matter if the expert is male or female, if they are young or old, and they can be any ethnicity! In other words, said the researchers—the variables we have read so much about (i.e., gender, age, ethnicity) are not as notable as whether someone “looks like” our stereotype of a “good […]...

Gheorghiu, A., Callan, M., & Skylark, W. (2017) Facial appearance affects science communication. Proceedings of the National Academy of Sciences (PNAS)., 201620542. DOI: 10.1073/pnas.1620542114  

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