IPIP Research API

Independent evidence matters

Scientific integrity is part of the product

Our long-term goal is to support careful psychometric work, not to convert personality scores into unsupported judgments about a person.

  • Preserve exact source wording, item IDs, scoring direction, provenance and version histories.
  • Separate measurement reliability, construct validity, and demonstrated real-world dependability.
  • Estimate internal consistency and other relevant statistics only when data are sufficient, and report uncertainty and assumptions.
  • Never assume a custom subset, weighting change or translation inherits the original instrument's validation.
  • Use reference percentiles only with suitable samples and a clear explanation of applicability.
  • Support investigator review, replication and correction instead of silently overwriting prior findings.
  • Do not turn a personality score alone into an automatic employment, contributor, or moderator acceptance/rejection decision.