Princeton University researchers have developed a computer program that analyzes the facial features that make people appear trustworthy or fearsome. Below are some of the most extreme examples showing computer-generated faces displaying these characteristics.

Here is a face Princeton researchers found to be most trustworthy in the study.

Credit: Oosterhof & Todorov

This face is considered neutral because of its blank expression.

Credit: Oosterhof & Todorov

Here is a face Princeton scientists concluded to be least trustworthy, according to the study findings.

Credit: Oosterhof & Todorov