Open Data: The Differentiation Studies

Each study's running aggregate is available at /api/study-results?study={id}, where id is one of type, profile, authority, barnum, or consistency. Responses are JSON, uncached beyond 15 seconds, and require no key.

• Type, Profile, Authority (study, study-profile, study-authority) — blind two-description forced choice. Returns answered, correct, cantTell, and a byFamiliarity breakdown (new / some / very), each with its own answered and correct counts.
• The Mirror Test (study-barnum) — the Barnum control. Returns total, sum of 1–5 accuracy ratings, and dist, the count of responses at each rating.
• Chart Consistency (study-consistency) — cross-calculator agreement. Returns total, typeMatch, and profileMatch counts.

The blind studies are scored against a 50% chance baseline: if the descriptions carry no real signal, correct / answered should sit near one half. The Mirror Test provides the Barnum baseline the other studies are read against — how highly people rate a single generic paragraph presented as their own result. The archive publishes the counts and leaves their interpretation to the reader; the framing for each study is stated on its own page, in advance, and does not move with the results.

The aggregates may be quoted and reused with attribution to The Science of Differentiation (https://thescienceofdifferentiation.com/research/data), including the date retrieved — the numbers are live and grow as responses arrive. For how the studies were constructed, cite the individual study pages; for the wider research record on Human Design, see the validation page and the public record.