Lifespan normative data (18-89 years) for Raven's Advanced Progressive Matrices Set I

Area of Science:

• Neuropsychology
• Cognitive Aging
• Psychometrics

Background:

• Raven's Advanced Progressive Matrices (APM) Set I is a brief, validated fluid intelligence test.
• Existing normative data for APM Set I is limited, hindering accurate clinical interpretation.
• Previous APM standardizations lacked measures of premorbid intellectual ability.

Purpose of the Study:

• To establish comprehensive normative data for APM Set I across the adult lifespan (18-89 years).
• To enable age-standardized assessment by presenting data in five age cohorts.
• To include data on premorbid intellectual ability for enhanced score interpretation.

Main Methods:

• Collected APM Set I data from 352 adults across five age cohorts (18-89 years).
• Included a validated measure of premorbid intellectual ability.
• Analyzed performance across age groups, focusing on age-related changes and error patterns.

Main Results:

• A notable age-related decline in fluid intelligence was observed, starting early in adulthood and more pronounced in lower-scoring individuals.
• Older adults did not exhibit specific item difficulties or increased error rates.
• Sex was not a significant predictor of APM performance.

Conclusions:

• The new normative data facilitates accurate APM Set I interpretation, especially for older adults.
• The findings underscore the susceptibility of fluid intelligence to normal aging and brain injury.
• This dataset is valuable for neuropsychological assessments in aging populations and informs theories of neurological aging.