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THE NORTHSTAR BLOG

Guides to every test

What each assessment actually measures, where its questions come from, how to read your result — and the limits most test sites leave out.

Personality

PERSONALITY TYPE

The 16 personality types, explained without the hype

What the four letters in a personality type actually measure, why a near-even axis matters, and how a free IPIP-based type test differs from the official MBTI.

3 MIN READ · READ THE GUIDE →
BIG FIVE

The Big Five personality traits (OCEAN), explained

Openness, Conscientiousness, Extraversion, Agreeableness and Neuroticism: what each Big Five trait means, why scores beat types, and how the IPIP-50 measures them.

2 MIN READ · READ THE GUIDE →
ENNEAGRAM

The Enneagram's nine types: a useful mirror, not a measurement

How the Enneagram's nine types are built around a core desire and fear, what a wing is, and why you should treat your Enneagram result as reflection rather than science.

2 MIN READ · READ THE GUIDE →
CHARACTER STRENGTHS

Character strengths: finding what is best in you, not what you are best at

The 24 character strengths and six virtues, what signature strengths are, why a low-ranked strength is not a weakness, and how this differs from VIA and CliftonStrengths.

2 MIN READ · READ THE GUIDE →
DARK PERSONALITY TRAITS

The Dark Triad (and Tetrad): what these traits are — and are not

Machiavellianism, narcissism, psychopathy and everyday sadism as ordinary personality traits: what the SD4 measures, why it is not a diagnosis, and why you can't test someone else.

2 MIN READ · READ THE GUIDE →
HIGHLY SENSITIVE PERSON

Highly sensitive person (HSP): what sensory-processing sensitivity really means

What the Highly Sensitive Person Scale measures, why high sensitivity is not the same as introversion, and why a score is a point on a continuum rather than a yes-or-no label.

2 MIN READ · READ THE GUIDE →

Career & work

Relationships

Emotions & wellbeing