About the archive
A collection of tests.
A history of ideas.
Intelligence measurement has taken many forms: a spoken question, a timed page of arithmetic, a missing piece in a pattern, a design assembled from blocks.
What the collection holds
Psychometrics Archive brings together historical intelligence tests and open cognitive assessments. Each entry connects the assessment to its origins, identifies the abilities it examines, and provides a path into the test itself.
The collection spans verbal and numerical reasoning, spatial construction, visual patterns, memory, and general knowledge. Some tests are designed for a person working independently; others use a structured exchange between an examiner and a participant.
Different forms of intelligence testing
Group tests
Written and visual batteries made it possible to assess classrooms, military recruits, and other groups using common instructions and time limits.
Individual examinations
Examiner-led tasks reveal how a participant answers, remembers, reasons, and constructs. Instructions and scoring are part of the assessment.
Open cognitive measures
Shared test resources support the study of reasoning through defined item types, recorded responses, and reproducible scoring.
Following a test through the archive
Begin with an assessment’s catalog entry for its history and format. Its sources lead to original publications and research. The test instructions describe the sequence, materials, and timing for that assessment; the results page brings the recorded performance together.
Explore the collection