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...human mood, emotion, and aggression as well as being recognised as an element of signalling in competitive interactions in many non-human species (Hill and Barton, 2005). Colours have been found to contain certain unique psychological properties and can have a strong impact on our emotional feelings. (Hemphill, 1996; Wright n.d). For example, Red is viewed as a powerful...

...human semen that are very familiar to most people, but their importance isn't appreciated. For a start, the ejaculate isn't of a uniform consistency. As the man ejaculates, the first 'spurt' contains far more sperm than subsequent spurts. This is why the withdrawal method of contraception is so dangerous. If the man is only a split second too late then the most potent...

...resources...[A rugby match in progress] The Six Nations Championship, the annual international rugby union competition involving six European teams: England, France, Ireland, Italy, Scotland and Wales is back. Discover all the different ways in which sport impacts our lives and explore The Open University's sports and fitness modules and qualifications by trying a free...

...humans and animals - The evolutionary approach suggests that non-human animals, our evolutionary relatives, experience emotions too. Anybody who has a pet dog or has observed any animals carefully should need no convincing of this! Charles Darwin was one of the first to study the expression of the emotions in animals and humans systematically (Darwin, 2009 [1872]). Figure...