Situation Awareness Performance in Healthy Young Adults Is Associated With a Serotonin Transporter Gene Polymorphism

Area of Science:

• Neuroscience
• Genetics
• Cognitive Psychology

Background:

• Situational awareness (SA) is a critical cognitive function, defined across three levels: perception (SA1), comprehension (SA2), and projection (SA3).
• Understanding the genetic underpinnings of SA can provide insights into individual differences in cognitive performance.

Purpose of the Study:

• To investigate the association between a specific genetic polymorphism in the serotonin transporter gene (SLC6A4) and performance on the Situational Awareness test (SAtest).
• To explore the potential role of SLC6A4 genotype in modulating different levels of situational awareness.

Main Methods:

• The Situational Awareness test (SAtest) was administered to 230 healthy Colombian participants using the Psychology Experiment Building Language platform.
• Genotyping for a functional polymorphism in the SLC6A4 gene was performed using polymerase chain reaction (PCR).

Main Results:

• Participants with the s/s genotype exhibited lower accuracy in SA1 compared to s/l and l/l genotypes.
• Individuals with the l/l genotype demonstrated significantly better accuracy in both SA2 and SA3 levels compared to s/s and s/l genotypes, even after correction for multiple testing.

Conclusions:

• The SLC6A4 gene polymorphism, particularly the l/l genotype, may be associated with enhanced abilities in perceiving, comprehending, and predicting environmental elements.
• This study represents the first genetic investigation of SA performance in healthy individuals, highlighting potential molecular correlates of situational awareness.
• Further research involving other genes is warranted to elucidate the complex genetic architecture of SA in both healthy and clinical populations.