Stroop Color-Word Interference Test: Normative data for the Latin American Spanish speaking adult population

Area of Science:

• Neuropsychology
• Cognitive Psychology
• Cross-cultural Psychology

Background:

• The Stroop Test is a widely used neuropsychological tool to assess selective attention and cognitive control.
• Normative data is crucial for accurate interpretation of test results, but existing data often lacks regional specificity.
• Latin America presents unique demographic and cultural factors that may influence cognitive test performance.

Purpose of the Study:

• To generate normative data for the Stroop Test across 11 Latin American countries.
• To investigate the influence of gender, age, and education on Stroop Test performance within this region.
• To provide culturally relevant and statistically robust norms for neuropsychological assessment in Latin America.

Main Methods:

• A sample of 3,977 healthy adults was recruited from 11 diverse countries in Latin America.
• Participants completed the Stroop Test as part of a comprehensive neuropsychological battery.
• A standardized five-step statistical procedure was employed to derive the normative data.

Main Results:

• Multiple linear regression models explained significant variance in Stroop Test scores (14-41%), highlighting the influence of demographic factors.
• While statistically significant gender differences were observed, effect sizes were small ( < 0.3), indicating limited clinical relevance for gender-adjusted norms.
• Age and education were identified as key demographic variables influencing performance, necessitating age- and education-adjusted norms where appropriate.

Conclusions:

• This study presents the first multicenter normative data for the Stroop Test in a Spanish-speaking Latin American sample.
• The generated norms are vital for enhancing the accuracy and applicability of neuropsychological assessments throughout the region.
• This research significantly contributes to the standardization and advancement of neuropsychological practice and research in Latin America.