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A pheromone (from ancient greek phero to bear and hormone) is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting like hormones outside the body of the secreting individual, to impact the behavior of the receiving individuals. There are alarm pheromones, food trail pheromones, sex pheromones. In an experiment by hummer and mcclintock, androstandienone or a control odor was put on the upper lips of fifty males and females and they were tested for four different effects of the pheromone 1) automatic attention towards positive and negative facial expressions, 2) the strength of cognitive and emotional information as distracters in a. Pheromones produced by female web-building spiders attract mates and trigger courtship (gaskett, 2007), and males apparently also release chemical cues (scott et al. Hall (1966) pointed out that facial expressions are most useful to communication at personal and social distances, and that patterns involving touch, odor. Many of us think of communication only as talking or writing to each other. How do wolves converse? Even though they cannot talk or write, wolves communicate effectively in several ways. The term pheromone is based on the greek words pheran to transfer and horman to excite. They are chemical molecules released in humans, insects, and animals to trigger a response to or to elicit specific behavioural expressions or hormonal changes from the opposite sex, the same sex or both sexes of the same species. Their facial expressions were recorded and their eye movements were tracked as they completed the task. The effects of the mixture on womens behavior enables us to make the claim that the mixture is a mixture of human pheromones. The poster presentation of our results to the society for social neuroscience is here. Pheromones ltpa pheromone (from greek phero to bear and hormone, from greek impetus.). Wolves frequently use ear and tail positioning, as well as facial expressions, to communicate. For example, ears flat back, close to the head with the tail tucked between the legs, accompanied by a slinking, slumping body posture, communicates submission. Ears perked up or forward with the tail straight out and slightly up indicates dominance. Facial expressions a wolfs face is a dynamic display of visual cues. A dominant wolfs curled lips, bared teeth, fixed stare, and ears jutting out horizontally tell other wolves to back off. Wolves have scent glands that produce a personal signature in the form of pheromones. this is where pheromones--those chemical secretions that influence the physiology or behavior of other animals--come into play. These powerful substances can do everything from calm (as in maternal appeasing pheromones) to excite (as in sexual pheromones).