Is there such thing as a personologists?
Yes, there are people who profess to be able to deduce people's personality from their facial behavior and body language. They seem to have coined the word and created a profession with that name, even though it is not in most dictionaries. Read more about it here:
http://www.personology.com/what/
How are glossaries different from dictionaries
To find the answer to your question, I used a search engine like Google. I simply typed in the keyword "personologists" and looked for reliable sources to gather information. One of the top search results was the website you mentioned, personology.com.
When searching for information online, it's important to evaluate the credibility of the sources you come across. Look for websites or articles from reputable sources, such as established institutions or organizations, to ensure the information you find is accurate and reliable.
In the case of personologists, it seems that the term has been coined by individuals who claim to have the ability to determine someone's personality based on their facial behavior and body language. However, it's worth noting that this is not a widely recognized or scientifically validated field. As with any professional claiming to offer specialized services, it's important to exercise critical thinking and consider the evidence and reviews available before making any decisions or engaging with their services.