Can the size of your pupils affect how attractive you are? According to a new study published in Cognition, it just might. Physical attractiveness has profound effects on social experiences and outcomes, often leading to positive perceptions and advantages, a phenomenon known as the “halo effect.” Attractive individuals tend to have more friends, higher earnings, and greater success in elections. Research on this topic has focused on facial features like prominent cheekbones, small noses, and especially the eyes. Large eyes are linked to youthfulness (a phenomenon known as neoteny) and attract…