Version 0.3.0 · personal reflection · 22 October 2026

What this result means

The four scores are descriptive summaries of your self-reported answers. The item sets draw on familiar DISC themes, but they do not establish four pure traits or a fixed personality type. The report shows actual responses so you can decide what fits your experience.

What we checked

We kept the original 48 items and scoring fixed, then analysed three SAPA collection periods containing 126,884 released response records. All 48 items were available in each period. We calculated raw-score consistency with 1,000 respondent-row bootstrap resamples per period, examined ordinal factor models, and compared scores with 36 separate IPIP anchor questions.

These are temporal replications on the same self-selected survey platform, not 126,884 people taking this website's test. Individual item pairs have far fewer observations because SAPA presented random subsets.

Consistency is strongest for the longer forms. The short S/C summaries remain particularly limited, so the brief form shows those individual answers without prominent numerical style scores. Alpha is a sample-level consistency statistic, not a percentage of correct personal results.

What the structure showed

The proposed four-factor model left substantial unexplained correlations. S mixes patience, support and dependability; C mixes detail, deliberation and structure. D and I also overlap. We therefore report broad answer summaries, reveal the individual responses, and avoid selecting a dominant type.

The four themes

• D: stated assertion, initiative and leadership inclination/confidence.
• I: stated social ease, expressiveness and engagement.
• S: a broad combination of patience, support, cooperation and dependability.
• C: a broad combination of detail attention, deliberation and structure.

Scoring

Responses run from 1 to 6. Reverse-keyed items contribute 7 − answer. Each summary is (mean keyed answer − 1) × 20. All items have equal weight and every item needs an answer. The four numbers do not add up to 100. The 0–100 display adds convenience, not measurement precision.

Reference percentiles

Separate percentiles are model-estimated midranks against historical SAPA volunteers in the 2015–2017 period. The source is a self-selected sample with planned item missingness. The distributions are reconstructed using item frequencies and unrestricted within-theme ordinal correlations. They are not representative general-population norms or observed complete-test ranks. Appendix C of the full report documents the model, checks and remaining uncertainty.

Limits that matter for personal use

We have not observed this new website's users over time, compared their answers with informants or behaviour, or established an individual confidence interval. We do not know whether taking the test improves self-understanding. Current mood, setting, interpretation and self-presentation can influence answers. Treat small score differences cautiously and use concrete examples from your life.

Privacy

This test page sends no answers anywhere. Saving on this device is optional; exported answers are personal information. Ordinary website access logs may record page requests, but not these answers. Analytics are disabled on this test page.

Sources and full analysis

• Official IPIP repository: public-domain wording and source keys.
• SAPA 2013–2014, 2014–2015, and 2015–2017: pinned original repository data.
• Full mathematical and psychometric report: estimates, assumptions, model failures, content audit and defensible claims.

The question bank and this summary are included with this test. No commercial DISC questionnaire or report text was copied.

48 public-domain IPIP items. “Reverse” means a higher answer contributes less to the target score. S/M/L identifies form membership. Seeing the key can influence later responses; take the test first if you prefer.