Dr. John Oldham commends Pete Davidson on Good Morning America

Watch Dr. Oldham, an expert in personality styles and personality disorders,  as he commends comedian Pete Davidson for being open about his diagnosis of borderline personality disorder on Good Morning America. Dr. Oldham is the interim chief of staff at the Menninger Clinic in Houston.

Read More


John M. Oldham, MD Why is it that so few people who recover from an episode of severe depression never have another one? This question, addressed in a recent New York Times article, brought to mind one of my own: What does personality have to do with it? Flourishing After Depression In the New York […]

Read More


  Do you look trustworthy? Lazy? Enthusiastic? When it comes to snap judgments, your body shape affects other’s first impressions of your personality. Researchers at the University of Texas in Dallas tested their theory that body-shape and personality-trait stereotypes affect how we judge and interact with people we haven’t met before. The Body Shape Study […]

Read More

Truth About Lies

By John M. Oldham, MD For $99.95, anyone can purchase a lie detector from Walmart. Who buys a polygraph test? Who uses it? Who relies on the results? These are questions I can’t answer, and I was surprised to find one being marketed to the public, since even in expert hands, lie detection results are […]

Read More


Want to know why casting headlines as “fake news” gets traction with so many people? The strategy, say psychologists, is “plausible deniability,” meaning the claim cannot be proven wrong in the moment. The strategy is often put to use by overly confident politicians and business leaders among others, say researchers at the University of Notre […]

Read More

Healthy Self-Confidence or Narcissistic Personality?

There is a lot in the air these days about the narcissistic personality of prominent people. But what is narcissism, really?  Is having narcissistic traits good or bad?  How much is healthy narcissism and how much is a true narcissistic personality disorder? Scholars of behavior have described healthy narcissism as a plus, a useful personality […]

Read More

Comparing Personality Tests

There’s a lot of buzz lately about The Personality Brokers, a new book by Merve Emre about the Myers-Briggs Type Indicator (MBTI) and the mother-daughter team that came up with it 75 years ago.   Now that we’ve launched The New Personality Self-Portrait 25 online, we’ve  been fielding a lot of questions about how the two […]

Read More

The New Personality Self-Portrait 25 Logo

Please enter your information:

You may purchase tests for personal use or to provide as a gift or a service to others. You will receive test credits for any unused purchases. You will be informed of available credits when you log in to your Account page.

For myself For others

To share a link to the NPSP25 site, enter information below and we will send an invitation.
To purchase a test on someone’s behalf, click on Buy Tests.