In A Nutshell

A 60-question self-assessment process that has it’s roots in two different philosophies – Carl Jung’s theory of psychological types and the Myers-Briggs Type Indicator. The test results use the acronym format introduced by Myers-Briggs (e.g. INTJ) with an extra letter to accommodate five rather than four scales. Each letter refers to one of the two sides of the corresponding scale. If you’ve looked at the Understand Myself you’ll probably notice some similarities, NERIS have chosen to rework and rebalance the Big Five personality traits, a model that dominates modern psychological and social research to align to their five scale Myers-Briggs format. The approach has allowed them to achieve high test accuracy while also retaining the ability to define and describe distinct personality types.

How Much Does It Cost?


Who’s Behind The Test?

NERIS Analytics Limited

How Long Does It Take?

12 minutes

What Type Of Test Is It?

Big Five / Jung

What Makes It Unique?

Anyone can take the NERIS Type Explorer® assessment for free and in 30 languages – it’s extremely accessible, having been taken nearly 100 million times. It’s one of the most user friendly and intuitively designed Personality Tools available – the interface is beautifully simple with rich visualisations that bring it to life. Hard science is balanced with great design and with the backdrop of it being free, this makes it an ideal starting place for most people curious about personality.

What Do You Do?

You will be presented with a series of statements, such as “You enjoy vibrant social events with lots of people,” “You often spend time exploring unrealistic yet intriguing ideas,” and “People can rarely upset you,” and asked to indicate your agreement or disagreement with those phrases as they apply to you, typically and personally.

Want to take the test? Go to

An example of the online report

How Credible Is It?

Whilst specific details on the original sample and model are limited, statistical analysis available via NERIS Analytics does confirm that their assessment is based on five distinct and independent scales. It also shows that all scales are internally consistent and people who retake their assessment are very likely to get similar scores on all scales, even after an extended break.

It is important to note that neither Jung’s theory, nor Myers and Briggs’ application of it emerged out of controlled experiments. Theirs is a conceptual framework, a mental model, rather than a scientific instrument. 16 Personalities is as previously mentioned, rooted in both of these philosophies and whilst it does leverage some elements of The Big Five it is unclear to what extent.

Most personality psychologists agree that individual differences in personality are better described by continuous traits than discrete type categories as prescribed by MBTI. Any tool which divides humanity into 16 different types will have limitations. In their credit, 16 Personalities do reference this explicitly on their introductory theory section.

What About The Results?

An online report accessed through the web interface tells you:

  • Type – your personality type shows what guides your attitudes and actions in life. You’ll be given a title for each of the 16 available (e.g. Architect) and then assigned an Identity characteristic which prefaces it as either Assertive or Turbulent. This is basically a build on your Code shown below
  • Code – the letters in your type code refer to your five dominant traits:
    • Mind – how we interact with our environment
      Introverted (I) or Extroverted (E)
    • Energy – where we direct our mental energy
      Observant (S) or Intuitive (N)
    • Nature – how we make decisions and cope with emotions
      Thinking (T) or Feeling (F)
    • Tactics – reflects our approach to work, planning and decision-making
      Judging (J) or Prospecting (P)
    • Identity – underpins all others, showing how confident we are in our abilities and decisions
      Assertive (-A) or Turbulent (-T)
  • Role – determines your goals, interests and preferred activities. There are four roles dictated by two of your traits:
    • Analysts (Intuitive and Thinking [ _NT_ ] types
    • Diplomats (Intuitive and Feeling [ _NF_ ] types
    • Sentinels (Observant and Judging [ _S_J ] types
    • Explorers (Observant and Prospecting [ _S_P ] types
  • Strategy – can be used to determine how you approach everyday situations and achieve your goals

Following this overview you get a breakdown of how you rank, according to your self-report in percentage terms against the five personality aspects. You have the ability to click through on each and every aspect in order to learn more.

Read more insights and articles about the process

How Are My Results Treated?

You do not need to create an account to receive results, in all instances your responses are collected and should you wish to create an account, your name, age and gender are collected. It’s completely up to you to decide what you want to share. They do not sell your personal data. Your data can be used to improve services and understanding of personality traits. Any raw research data you supply is anonymized or pseudonymised, and access to it is strictly limited. Even our own researchers only see data that cannot be connected back to any individually identifying information, and we only publish aggregate statistical data.

What Do We Think?

It’s probably the prettiest test in the bunch, albeit with a mixed scientific backing… we think so long as you’re aware of some of the pitfalls with an MBTI approach and the underlying philosophy, this test is worth taking. It’s free and where possible NERIS Analytics strive to provide logic and reasoning for the decisions they’ve taken. Your results are easy to digest, they provide great follow up advice and there are a number of paid options should you find it engaging and useful.