What Are Hogan Assessments, and Can You Trust the Results?

If you've applied for a leadership role or gone through an executive search process, there's a decent chance you've taken a Hogan assessment. It's one of the most widely used personality assessment suites in business, and for good reason: it's built on real science, not pop psychology.

Here's the background on what Hogan assessments actually measure, where they came from, and why the validity data holds up.

Where Hogan Came From

Psychologist Robert Hogan founded Hogan Assessment Systems in 1987, but the theory behind it dates back further. In 1983, Hogan published a framework called socioanalytic theory, which combines psychoanalytic theory, role theory, and evolutionary theory into a single model of how personality shapes social behavior.

The core idea: humans are wired to do two things in any group, at work or otherwise — get along with others and get ahead of them. Reputation is the byproduct of how well someone balances those two drives, and it's observable, measurable, and predictive of how they'll perform on the job.

Hogan built its assessments to measure the Five-Factor Model of personality (the well-established "Big Five" — openness, conscientiousness, extraversion, agreeableness, and emotional stability) through that socioanalytic lens. The result is three core instruments:

HPI (Hogan Personality Inventory) — measures normal, everyday personality: how someone comes across when they're at their best. This is the "bright side."

HDS (Hogan Development Survey) — measures the tendencies that show up under stress, boredom, or pressure and can derail a career if left unmanaged. This is the "dark side."

MVPI (Motives, Values, Preferences Inventory) — measures what someone values and what motivates them, which shapes culture fit and long-term engagement.

Used together, these three answer a different question than most personality tools: not "what type are you," but "how will you actually perform, lead, and fit in this specific environment."

The Validity Data

This is where Hogan separates itself from a lot of what's marketed as workplace personality testing.

The HPI alone has been evaluated in more than 450 validation studies across a wide range of jobs and industries. Meta-analytic research on individual HPI scales shows solid criterion validity for predicting job performance — Adjustment (.43), Prudence (.36), Ambition (.35), Interpersonal Sensitivity (.34), Inquisitive (.34), and Learning Approach (.25).

Used on its own, the HPI predicts job performance at roughly .29. That's a meaningful, above-average result for any single assessment. But the real number worth remembering is .54 — the predictive validity when HPI, HDS, and MVPI are used together. Well over 250 criterion-related validation studies back this up, and the combined profile consistently outperforms any single instrument, across job families and industries, without adversely impacting candidates.

Research specifically testing the incremental value of combining tools found that adding HDS dimensions accounted for more than twice the variance in job performance domains — intrapersonal skills, interpersonal skills, work skills, and leadership — compared to the HPI alone. In other words, the "dark side" data isn't a nice-to-have. It measurably improves the prediction.

Reliability holds up too. Short-term test-retest reliability runs .81 for the HPI, .79 for the MVPI, and .70 for the HDS — all within the range psychometricians consider acceptable to strong for personality instruments.

How That Compares to Other Popular Tools

It's worth naming the elephant in the room: Hogan is not the MBTI, and it wasn't built the same way.

The MBTI is based on Carl Jung's theory of psychological types — a framework built on observation and belief, not empirical validation. In 1991, the National Academy of Sciences reviewed the available MBTI research and concluded there wasn't sufficient, well-designed research to justify using it in career counseling, let alone hiring. Even the Myers-Briggs Company itself says the MBTI shouldn't be used for selection decisions.

Hogan was built for the opposite purpose. It was designed from the outset for use in employee selection and leadership development, validated against actual job performance outcomes, and it's maintained by a team of PhD- and master's-level psychologists who continue to publish peer-reviewed research on it. That's the difference between a tool that describes and a tool that predicts.

Why This Matters for Your Organization

None of this means Hogan is magic or infallible — no assessment should be the sole basis for a hiring or promotion decision. But when it's used as one input alongside structured interviews, work samples, and reference checks, the validity data gives you a real, defensible basis for the decision. That matters both for making better people decisions and for standing behind them if they're ever challenged.

In the next post, we'll get into what the HPI, HDS, and MVPI actually measure in practice, and how to read a Hogan report without getting lost in the jargon.