Learning a musical instrument may sharpen attention and vigilance from childhood through adulthood, according to new research published in the British Journal of Psychology. Researchers have long debated whether mentally demanding activities—such as playing chess, learning a language, or practising a musical instrument—can enhance general cognitive abilities, such as attention and vigilance, which naturally develop with age. Musical training has been seen as a promising candidate because it requires sustained focus, complex coordination, and multitasking. However, much of the earlier evidence comparing musicians and non-musicians is difficult to interpret. These groups often differ in background factors like education, socioeconomic status, and personality, making it difficult to determine whether observed differences can be attributed to musical training itself, or instead reflect the pre‑existing characteristics of individuals who are more likely to pursue music. A research team led by Rafael Román-Caballero of the University of Granada in Spain sought to address this selection bias. The scientists recruited 420 participants between the ages of 8 and 34, drawing from two independent groups—one of Spanish children and adolescents, and …