Exhibit 2 A preference in humаns fоr turning the heаd tо the right, rаther than tо the left, during the first six months after birth constitutes one of the earliest examples of behavioral asymmetry and is thought to influence the subsequent development of perceptual preferences by increasing visual orientation to the right side. Suppose that you are trying to understand if this head-turning bias persists into adulthood by analyzing how adults turn their heads when kissing. If the head-turning bias does not persist, then half or 50% of adults should turn their heads to the right and 50% should turn their heads to the left when kissing. To test the head-turning bias in adulthood, you want to test if the proportion of adults who turn their heads to the left when kissing is below 50%. You observe kissing people in public places (international airports, large railway stations, beaches, and parks) recording the head-turning behavior of individuals. You find that, in the sample of 150 kissing adults you observed, 60 turned their heads to the left.