Mental Age Test

Can you give more background to this Mental Age Test?

Good question. Our Mental Age Test was first released in November 2013 on my personal website. The original content was introduced to me by a friend from Japan. However, I couldn’t find any online resource for it. It has now been translated into 32 languages and is one of the most shared webpages on Facebook and Twitter. Many famous people have taken this test. According to Google Analytics reports, more than 127,200,000 people from more than 239 countries/regions have taken this test. (as of Mar 5, 2025)

In February 2014, I moved this webpage from my personal website to arealme.com, and the Mental Age Test became the first test to exist on arealme.com. Many updates have been applied to the test since its launch. We have used various algorithms to improve its reliability, based on user feedback from Twitter, Facebook, and in our comments section (you can also drop a message after taking the test).

Mental Age Test Result breakdown by country

Mental Age Test Result breakdown by U.S. states

Is this Mental Age Test accurate?

I believe so. We’ve improved our algorithm from time to time since its first launch in 2013. According to most of the users’ reactions, the quiz is very reliable. Almost 10% of people who completed this test have shared it on Facebook and Twitter.

Other fun facts about our Mental Age Test

• In 2013, test takers were required to enter their actual age before beginning the test. The average age of participants was 23.
• In 2014, due to privacy concerns, we allowed test takers to opt out of providing their actual age. The average age of participants then dropped to 16, suggesting that individuals under 18 are less concerned about disclosing their real age.
• Question #3 is: “I spend most of my time on ___________”. We included a textfield for users to input their own responses. The most frequently mentioned activities are:

Mental Age Test Result breakdown by cities worldwide