information:filtering, structural:reformatting, quality:corruption, structural:summarization
Evolutionary theories

Evolutionary theory also suggests that people whose physical features suggest they are healthy are seen as more attractive. The theory suggests that a healthy mate is more likely to possess genetic traits related to health that would be passed on to offspring (known as indirect benefits), and also that a healthier mate may be able to provide better resources and parental investment than less healthy mates (known as direct benefits). People's tendency to consider people with facial symmetry more attractive than those with less symmetrical faces is one example. However, a test was conducted that found that perfectly symmetrical faces were less attractive than normal faces. According to this study, the exact ratio of symmetric to asymmetric facial features depicting the highest attraction is still undetermined.