The Enneagram After Dark: Sex, Love, and the Enneagram

Clinically Reviewed by Steven Melendy, PsyD. on January 06, 2023

With Valentine's Day on the way, it’s natural to spend a bit more time thinking about love and relationships.  Rather than offer you a guide to make your relationship explosive, this year, we decided to get down and dirty with some Enneagram sex research by Dr. Frederik Coene and his research partner Valerie Wanamaker.

Can Your Personality Predict Your Favorite Flavors?

Clinically Reviewed by Steven Melendy, PsyD. on October 11, 2022

We found that someone’s personality can help explain their taste preferences. Using Truity’s Decision Style Test, we surveyed over 6,000 people and found a striking association between personality and taste. Like this tasty insight: people whose favorite foods are sweet are significantly more likely to be ‘sweet’ towards others! Applying machine learning (ML) tools to the data allows us to guess people’s favorite flavor with approximately 50% accuracy given only their personality results—random guessing would be correct only 20% of the time.  

What is the Rarest Enneagram Type?

Clinically Reviewed by Steven Melendy, PsyD. on August 18, 2022

There are nine different Enneagram types in the Enneagram personality system, but statistics suggest they aren’t evenly distributed amongst the population. Considering these differences, the Enneagram has some types that are more rare and some that are more common. So what is the rarest Enneagram type? Among Truity readers, the rarest Enneagram type is Type 7, “The Enthusiast,” with Type 5 “The Investigator” following close behind. 

Have Our Personalities Changed Due to the Pandemic? New Research Says: Yes.

Clinically Reviewed by Steven Melendy, PsyD. on October 13, 2022

Whether you feel emotionally exhausted by two years of constant norm changes, or you’re now a pro with alone time, everyone has their own story about how the pandemic reshaped their day-to-day lives. And if it seems like the pandemic has permanently changed who you are and your outlook on life—it’s not just you. 

Can You Be Both an Introvert and Extravert? Here's What the Science Says

Clinically Reviewed by Steven Melendy, PsyD. on February 17, 2022

Personality typing can be validating, encouraging, eye-opening, and occasionally…frustrating.

The Myers and Briggs Personality test places your personality somewhere on a scale between introversion and extraversion. You might, even before testing, have a definitive answer for this one. Many people know whether time spent in large groups leaves them feeling drained or energized. They can tell you whether spending time in isolation feeds their soul or leaves them empty and lonely.

Corporate Criminal Test: Find Out How Your Personality Traits Align With Famous Corporate Con Artists, from Elizabeth Holmes to the Fyre Fest Organizers

Clinically Reviewed by Steven Melendy, PsyD. on October 28, 2021

Note: The corporate crimes and True Crime stories highlighted here can involve dark and mature themes. If you’re sensitive to reading about these types of crimes, skip this read and the test. 

Hate your job? How to use your personality type to find meaning at work

Clinically Reviewed by Steven Melendy, PsyD. on October 26, 2021

A Q&A with Paul Tieger, Behavioral Scientist & bestselling co-author of “Do What You Are”

Our work and careers are such a big part of our lives. We spend a huge chunk of time there, and yet many people are very unhappy and disengaged with their work. In fact, thanks in part to the global pandemic, a “Great Resignation” is now underway, with many people re-examining their core motivations and looking for more meaningful and authentic careers. 

Is There Really a Blood Type Personality? Here's What Science Says

Clinically Reviewed by Steven Melendy, PsyD. on October 20, 2021

You’ve heard of being cold-blooded, hot-blooded, red-blooded and blue-blooded – but is there really a blood type personality?

Despite popular belief, there is no solid scientific evidence to support the theory that blood type affects personality. A 2014 large-scale survey of over 10,000 people from both Japan and the US found that blood type does not influence personality at all. That doesn’t stop the theory from persisting, though.

Read on to find out more about the blood type personality theory, its history and the science behind it.

Are you a Difficult Person? Take the Toxic Traits Test

Clinically Reviewed by Steven Melendy, PsyD. on October 13, 2021

We all know someone who’s difficult to deal with. Maybe it’s a cunning colleague at work, an overly dramatic friend who demands too much of your energy, or that killjoy who always runs to tell you—you guessed it—the bad news. All of these behaviors describe what some call a toxic person.

While no one would like to think of themselves as being difficult, the truth is we all have some less-than-perfect personality traits. Wondering if you’re a difficult person? This article is for you. Here are seven signs that you may be a bit more toxic than you think.

What’s the Link Between the Enneagram and Autism?

Clinically Reviewed by Steven Melendy, PsyD. on October 12, 2021

Last month, I did an Enneagram typing interview for an autistic friend. Before the interview, we had an open discussion because she wasn’t sure her autism would allow her to self-type, even with the help of my interview questions. 

Her concern was that what she really thinks and what motivates her might be too heavily influenced by the adjustments she has made as a result of her autism and her efforts to behave neurotypically. 


Myers-Briggs® and MBTI® are registered trademarks of the MBTI Trust, Inc., which has no affiliation with this site. Truity offers a free personality test based on Myers and Briggs' types, but does not offer the official MBTI® assessment. For more information on the Myers Briggs Type Indicator® assessment, please go here.

The Five Love Languages® is a registered trademark of The Moody Bible Institute of Chicago, which has no affiliation with this site. You can find more information about the five love languages here.

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