Shipley Test
Background
The original Shipley Test is a classic psychological assessment used to measure crystallized intelligence (learned knowledge) and fluid intelligence (reasoning and problem-solving, independent of acquired knowledge). The test was designed by Walter C. Shipley in 1940 to fill a need for a quick, self-administered, objective way to measure intellectual impairment and mental decline based on the observation that crystallized intelligence deteriorates much slower than fluid intelligence. The test was later revised and is now commercially available under the name 'Shipley 2'.
The original Shipley test consists of 20 multiple-choice vocabulary questions that provide one target word and four possible answer choices (Example: large -> red, big, silent, wet?) and 20 abstract reasoning questions to test a person's ability to solve novel problems (Example: 12345?).
The Millisecond Shipley Test implements only the abstract reasoning portion of the original Shipley test. The test can be run as the original test with all questions presented on one single page or by presenting each question on a separate page. Two question forms are available. Form A runs the original 1940 Shipley questions, and form B runs the alternate questions devised by Reuben S. Horlick and Harold J. Monroe in 1954.
Task Procedure
The one-page Millisecond Shipley Test provides all 20 abstract reasoning questions on one single page. In the multiple-page Millisecond Shipley Test, participants work on problem per page. Once a page is submitted, they cannot return to previous questions. In both version, participants have as much time as they require.
What it Measures
The Millisecond Shipley Test is an assessment tool of fluid intelligence
Psychological domains
- Fluid Intelligence: Ability to reason abstractly and solve novel problems independent of acquired knowledge
- Inductive Reasoning: Ability to infer underlying general rules
- Non-Verbal Problem Solving: Ability to solve problems devoid of verbal information
- Numerical Reasoning: Ability to interpret, analyze, and draw logical conclusions from quantitative data
Main Performance Metrics
- Total Score: Sum of all correct responses (out of a total of 20); main measure of fluid intelligence
Psychiatric Conditions
The original (full) Shipley Test was used as a diagnostic assessment tool with the following patient groups
- Dementia
- Schizophrenia
- Combat Trauma
- Traumatic Brain Injuries (TBI)
Test Variations
The original Shipley Test, a brief measure of crystallized and fluid abilities. Download provides the original version (Shipley, 1940) and an alternate form (Horlick & Monroe, 1954).
The original Shipley Test, a brief measure of crystallized and fluid abilities. Download provides the original version (Shipley, 1940) and an alternate form (Horlick & Monroe, 1954).
References
Search Google Scholar for peer-reviewed, published research using the Inquisit Shipley Test.
Shipley, W. C. (1940). A Self-Administering Scale for Measuring Intellectual Impairment and Deterioration. The Journal of Psychology, 9(2), 371–377. https://doi.org/10.1080/00223980.1940.9917704
Horlick, R.S. & Monroe, H.J. (1954). A study of the reliability of an alternate form for the Shipley-Hartford Abstraction Scale.J Clin Psychol, 10(4), 381-3.