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What does this data show?

Open item-level analytics from the same bank that powers the live assessments.

This page publishes aggregate statistics on assessment items: which questions discriminate traits best, how traits correlate, test quality summaries, and IRT calibration views. Nothing here is behind a login; it is the same transparency we describe in our philosophy.

Use the tabs to compare best and worst items per trait, inspect test stats across assessments, or review accuracy and IRT curves. Select an assessment to scope the tables to that instrument, or compare two assessments side by side.

We publish this so researchers, typologists, and curious test-takers can see how scores are built instead of trusting a black box. The item bank is living data: weak items are removed, strong items are weighted more heavily, and the whole system improves with every response.

If you are conducting research, the statistics on this page are published for open review. You do not need to ask permission to read what you see here.

Our philosophyTake an assessment
Best ItemsWorst Items
Test QualityTest AccuracyTest IRTTest Stats
Trait Correlation

Jungian Function Assessment Stats (Version 5)

Aggregate usage and item bank metrics for the selected assessment.

Distribution

Trait score distribution with normality statistics — all traits combined or by individual trait.

Trait Score Distribution - All Traits Combined
n=37,230
Distribution of average trait scores across all traits combined
Observed
Normal Distribution
Mean (μ)
StatValue
Mean4.49
Median4.50
95% CI of Mean4.48 – 4.50
Mean vs Median-0.01

Assessment Grade = (Average Grade)

B-

Jungian Function Assessment (Version 5)

Average Test Duration

Average finished-test duration by test type, based on IQR-filtered historical completions.

Quick24items
⏱️ Avg 3m 31s
Half32items
⏱️ Avg 5m 19s
Full64items
⏱️ Avg 11m 15s
Masochistic128items
⏱️ Avg 23m 55s
MetricCount
  1. Total Users

    281

  2. Total Anon

    4,738

  3. Total Assessments Taken

    5,264

  4. Total Items

    403

  5. Total Responses

    296,303

  6. Total Traits

    8

  7. Item Grade Distribution

    Number of active, scored items in each quality index letter grade.

    GradeCount
    S++0
    S+0
    S0
    S-0
    A+5
    A23
    A-33
    B+52
    B74
    B-85
    C+81
    C45
    C-4
    D+1
    D0
    D-0
    F0

Validity

Cronbach's alpha (α) and McDonald's omega (ω) reliability coefficients by trait and version.

View:
Version SummaryGraphBy Trait
Reliability Coefficients by Trait
Cronbach's alpha (α) and McDonald's omega (ω) for each trait (All Versions)
Trait
Cronbach's α
95% CI
McDonald's ω
Items
N
Fe
0.69Questionable
[0.67, 0.71]
0.96Excellentcoverage 97%
108
2142
Fi
0.60Questionable
[0.58, 0.62]
0.97Excellentcoverage 73%
146
2142
Ne
0.64Questionable
[0.62, 0.66]
0.94Excellentcoverage 99%
85
2142
Ni
0.69Questionable
[0.68, 0.71]
0.96Excellentcoverage 97%
101
2142
Se
0.62Questionable
[0.59, 0.64]
0.97Excellentcoverage 64%
157
2142
Si
0.57Poor
[0.54, 0.59]
0.97Excellentcoverage 63%
166
2142
Te
0.61Questionable
[0.58, 0.63]
0.93Excellentcoverage 97%
107
2142
Ti
0.63Questionable
[0.61, 0.66]
0.97Excellentcoverage 86%
151
2142