The thing which Julie teaches her students so that they can make better judgements and observations is:
This refers to the complex analysis of available facts and data so that a conclusion can be reached through the use of logic which facilitates problem solving.
With this in mind, we can see that Julie who has a background in psychology is making use of her understanding of human behavior to guide her students to improve their critical thinking skills.
Read more about critical thinking skills here:
https://brainly.com/question/6034421