Discuss the evolutionary explanations of functions of sleep. (24 marks) The evolutionary theories suggest sleep has evolved because it gives an animal a greater chance of survival when in a dangerous environment. They also suggest that sleep has evolved because it conserves energy and coincides with their eating habits. The evolutionary explanation (also referred to as the ecological approach) is based on the observation of animals in their natural environment. The evolutionary approach to
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Outline and evaluate biological explanations for aggression (24) The biological explanation for aggression states that aggression is innate behavior in people and the environment around them does not cause it. Neurotransmitters in the brain‚ chemicals that allow impulses to be transmitted from one area to another‚ can be used to explain why some people are aggressive. There is evidence to suggest that the neurotransmitters serotonin and dopamine are linked to aggression‚ low levels of serotonin and
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Describe and evaluate social explanations of aggression. Aggression can be defined in many different ways. Bandura suggests that it is the intent to cause harm to another human being who is motivated to avoid such treatment. One of the main social psychological explanations of aggression comes from Bandura and Walters in 1963. He suggests that aggression is learned either indirectly; through observational learning and only replicated if vicarious reinforcement occurs‚ or directly- where aggressive
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hormonal mechanisms in aggression (8 marks + 16 marks) Aggression is a behavior directed towards another intended to harm or injure. Neurotransmitters are chemicals that enable impulses in the brain to be transmitted from one area of the brain to another. There’s evidence that the neurotransmitters serotonin and dopamine are closely linked to aggressive behavior. Low levels of serotonin and high levels of dopamine have been associated with aggression in both animals and humans. Low levels of serotonin
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Discuss explanations of institutional aggression. (24 marks) Institutional aggression is any violent behaviour that exists within certain institutions. The aggression may be a defining feature of the group‚ for example the army or the police. Or it may just be a readily acceptable ‘normal’ behaviour e.g. the events that took place in Abu Grahib Prison in Iraq. There are two main explanations of institutional aggression; dispositional factors and situational factors. Dispositional factors can be
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Explanation of Human Behavior The history of evolutionary psychology began with Charles Darwin‚ who proposed that humans have social instincts that evolved by natural selection. Darwin ’s work inspired later psychologists such as William James and Sigmund Freud but for most of the 20th century psychologists focused more on behaviorism and proximate explanations for human behavior. As school psychology transitions into an outcome-oriented profession‚ we continue to evolve new ways to bring science
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OUTLINE AND EVALUATE EVOLUTIONARY EXPLANATIONS OF FOOD PREFERENCES (4 MARKS + 16 MARKS) Outline (A01) Tastes experiences come from our taste receptors. These make us sensitive to a range of taste qualities. For example‚ sweet foods are usually associated with carbohydrates that are a great source of energy. Sour food allows us to identify food that has gone off and would therefore contain harmful bacteria. Salt food is vital for the function of our cells. Bitter tastes are associated with
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evaluate the evolutionary explanation for gender roles Gender refers to culturally constructed distinctions between femininity and masculinity. Individuals are born female or male but they become feminine or masculine through complex developmental processes that take many years to unfold. For example‚ women usually look after babies while men are the providers. The evolutionary approach argues that gender role division appears as an adaptation to the challenges faced by the ancestral humans in the EEA
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Discuss one or more evolutionary explanations of group display in humans. (25 marks) Group display in humans has been studied by a variety of psychologists both classic and contemporary. Psychologists such as Le Bon believe that crowd behaviour is explained through the individual taking on the ‘psychology’ of the crowd’. Essentially‚ the actions of a crowd can be explained through situational factors‚ such as convergence in one location‚ or the result of normless situations where people look to
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Describe the evolutionary explanation of gender development Evolutionary psychology is based on the ideas that our behaviour is influenced by our instincts left over from our evolutionary past. These behaviours were adaptive to increase the chances of survival and reproduction. Natural selection is the idea that the individual who is best adapted to the environment will survive and pass on their genes. Sexual selection is the idea that species have developed specific behaviours and physical
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