Open Matrices Item Bank (OMIB)

The selected original matrix SVGs, construction-element SVGs, and source-derived
item data in this directory are distributed under GNU GPL version 3, as specified
by their authors in the primary publication. The full license is COPYING.txt.

Authors: Marco Koch, Frank M. Spinath, Samuel Greiff, and Nicolas Becker.
Source: https://osf.io/4km79/
Publication: Koch, M., Spinath, F. M., Greiff, S., & Becker, N. (2022).
Development and Validation of the Open Matrices Item Bank.
Journal of Intelligence, 10(3), 41. https://doi.org/10.3390/jintelligence10030041

Ownfacet modifications, 2026-10-07:
- Selected the 22 source Set 1 items, in published worksheet order.
- Extracted the original response keys, rule counts, and calibration metadata.
- Copied selected original SVG files byte-for-byte.
- Added two practice illustrations using the original construction elements;
  these are not published OMIB items and do not contribute to the score.
- Implemented an independent interface and an exact-match raw-score calculator.
- Omitted the six shared anchor items: their solutions are not included in the
  source worksheet. No anchor solutions were inferred.

The published item-bank evidence does not establish validation or population
norms for Ownfacet's chosen form and interface. No author or institution endorses
Ownfacet. The published calibration data are reference metadata, not IQ norms.

provenance.json records source URLs, source hashes, selected IDs, and hashes for
the unmodified SVG files. SVG and JSON files are supplied in editable source form.

This scoped notice applies to the source-derived OMIB materials and added practice
illustrations in this directory. It does not relicense unrelated site content.