Explain how twin and adoption studies attempt to distinguish genetic and environmental factors underlying the onset of schizophrenia within families. Review the studies and discuss two limitations of this.
Psychology Essay Explain how twin and adoption studies attempt to distinguish genetic and environmental factors underlying the onset of schizophrenia within families. Review the studies and discuss two limitations of this. Schizophrenia is the label applied to a group of disorders characterised by severe personality disorganisation, distortion of reality, and an inability to function in daily life. Symptoms are mainly disturbances of thought processes, but also extend to disturbances of emotion and behaviour. There are two symptom categories - acute schizophrenia characterised by positive symptoms, such as hallucinations and delusions; and chronic schizophrenia, characterised by negative symptoms such as apathy and withdrawal. However, DSM-IV has now moved away from these definitions and classified schizophrenia into three main sub-types: paranoid, disorganised and catatonic. Understanding Schizophrenia More research has, probably, been devoted to trying to understand the nature of schizophrenia than any other mental disorder. Somatogenic approaches have focused on the role of genetic mechanisms influencing the propensity to develop schizophrenia, while psychogenic approaches emphasise the effect of adverse childhood experiences, particularly abnormalities in family interaction in the aetiology of the disorder. Twin studies Twin studies offer a
Compare and contrast the Functionalist and Marxist views of society.
Compare and contrast the Functionalist and Marxist views of society. Sociology has been classified as the last in a long line of emerging scientific disciplines which people have developed and explored in order to make sense of their world. Early theories such as the positivist approach of Comte, the functionalist views of Emile Durkheim and the conflict perspectives of Karl Marx have offered a view of why human beings behave as they do and how they fit together in society. Each theory has to some extent been shaped or influenced by the approach of others and many sociological explanations have comparisons or contrast that can be made. Browne once said "sociological perspectives centre on how much freedom or control the individual had to influence society" He goes on to comment on the two main approaches "structuralism is concerned with the overall structure of society and the way social institutions act as a constraint, or limit and control individual behaviour". Structuralism offers a view of the individual being controlled by the society they live in, Marx and Durkheim are similar in that they can both be described as structuralists, however their individual ideas are somewhat different. Functionalism was developed by Emile Durkheim, he believed like Comte that sociology should be viewed as a precise science and that society should be studied objectively. Durkheim
Outline and evaluate two social psychological theories of aggression
Outline and evaluate two social psychological theories of aggression. (24 marks) Bandura believed that the potential for aggression may be biological, but the expression of aggression is learned. The social-learning theory (SLT) states that learning occurs through observation of a model. Imitation of an observed behaviour is more likely if the model is someone we aspire to or identify with or if they are rewarded. This is vicarious reinforcement. A child forms a mental representation of an event, including the possible rewards or punishments of the behaviour. When a child imitates an aggressive behaviour, they gain direct experience, and the outcome of the behaviour influences the value of aggression for the child. If they are rewarded they are more likely to repeat the behaviour. Children develop self-efficacy, which is confidence in their ability to successful carry out a behaviour. If aggressive behaviour is unsuccessful for a child, they will have a lower sense of self-efficacy so are less likely to behave this way in future. There is strong empirical evidence to support the SLT. For example, Bandura's Bobo doll studies found that children who observed a model behaving aggressively to the Bobo doll behaved more aggressively than those who observed a non-aggressive model and also imitated specific aggressive acts. This supports the theories claims that behaviour can be
The psychoanalytic approach to psychology is based on the system of psychoanalysis, developed by Sigmund Freud (1859 - 1939). Freud was interested in studies of the unconscious mind and mental illness
Zoë Wood Psychology Freud's psychoanalytic approach to psychology Tutor: N. Warmsley 9th October 2005 Freud's Psychoanalytic Approach to Psychology The psychoanalytic approach to psychology is based on the system of psychoanalysis, developed by Sigmund Freud (1859 - 1939). Freud was interested in studies of the unconscious mind and mental illness. He preformed studies to look into human personality, psychosexual development and conducted method of treatments to determine the causes of neurotic mental illness. Freud thought that mental illness was caused by early childhood trauma of which treatment for such illness could only be successful when these childhood memories were dealt with and overcome. He developed his own technique to try and remember and overcome the events from their past that had disturbed their development. He made his patients describe anything that came into their mind no matter how silly they thought it may be. This technique helped Freud determine the cause of the mental illness and encouraged the patient to resurface repressed memories. Freud thought this would help them come to terms with the events helping overcome the illness, which was said to be 'removing the neurosis'. According to Freud, everything we do, why we do things, who we are and how we became like this are all related to our sexual drive. Childhood sexual experiences will
Temp labreport
How Temperature of HCL Effect Rate Of Hydrogen Produced Aim:- To determine how temperature affects the rate at which the reaction between Magnesium ribbon (Mg) and Hydrochloric acid (HCl) takes place. Introduction:- The rate of reaction can be affected by a number of factors: temperature, concentration, adding a catalyst and surface area. The one that I am going to be investigating and explaining about is temperature. Changes in temperature change the kinetic energy of the particles and hence the numbers of successful collisions with enough energy to break existing bonds and make products. For a reaction to take place, molecules must collide with each other. When they do so, they must possess enough energy to break the intermolecular bonds and hence, cause a reaction. The two theories that affect temperature and the rate of reaction are the kinetic theory and the collision theory. The kinetic theory clearly states that the positioning and movement of particles in a substance increases if the temperature increases. Therefore, increasing the temperature increases the energy between the particles and makes them move around a lot more and collide more often. Hypothesis: - The rate of reaction has a positive relationship with the temperature of the Hydrochloric Acid. Apparatus:- ) Test tube 2) Rubber tube (a.k.a. delivery tube) 3) Measuring cylinder X2 [1-10ml, 1-100
p1: explain the purpose and role of research for the health and social care sector
P1: Explain the purpose and role of research for the health and social care sectors. Research is an intellectual investigation to get a greater knowledge or understanding of events, behaviours and theories. Research is very active and systematic process of inquiry aimed at revising, discovering and interpreting facts and also for law establishment and theories. Many organisations have research as an essential tool, though it is exceptional in the health and social care industry. Research in health and social care is for: * Demographic. Prior to planning the delivery of services. Establishing population patterns and statistics. * Epidemiology. Exploring patterns of disease. * Quality assurance. Feedback from service user about service. * Hypothesis. Exploring theories. * Knowledge. To extend understanding of theories * Reviewing and monitoring changes in practice. When health and social care practitioners are planning a new service they need to do research which focuses on the demographic data such as: population size, age, gender etc. This is so the practitioners can predict and plan for the future. Epidemiology investigates the cause, prevalence and spread of disease. Therefore the feedback from this research is very important and it is to help develop strategies to prevent and treat diseases. An example of this research is the United Kingdom Childhood Cancer
Sainsbury's organizational structure.
Task 3 (E4, C2, A1) Sainsbury's organizational structure Businesses are structured into different into ways according to the way they operate and according to their culture. The structure of business can affect the way it works and performs. You need to understand the differences between the following types of structure: * Tall * Flat * Matrix * Hierarchical Flat and tall structure:- The term 'scalar chain is a rather old fashioned one and stems from the days when large organizations were bureaucratic, with lots of layers between the top and bottom. Scalar chain refers to the number of levels within the structure or hierarchy of an organization. The scalar chain set out the authority, responsibility and the framework that determined superior and subordinate relationships. The idea of setting out everyone's role and position is to make it clear who is responsible for what, and that there is clear line of authority. Matrix structure:- A matrix structure can be used to combine the grouping method we have identified. In such a matrix it is probable that each member of the organization will belong to two or more groups. A matrix is thus a combination of structures, which enables employees to contribute to a mix of activities. The matrix enables the organization to focus upon a number of aims at the same time, and gives it the flexibility to respond to new markets where
Revision notes - origins of life on Earth, chemistry of life
8.4 LIFE ON EARTH 8.4.1 Origin of life 8.4.1.1 Identify the r/ship between the conditions on early Earth and the origin of organic molecules * Early earth contained no ozone layer › large amounts of UV radiation reached the earth * Little free oxygen (anoxic) therefore no ozone layer. * The volcanic emissions filled the atmosphere with methane (CH4), ammonia (NH3), H, CO2, CO and small amounts of water vapour. * The violent electrical storms and acidic rain formed the present warm and mineral-rich oceans. * There are only two possible ways organic molecules could have formed either - formed on earth from simpler molecules (Abiogenesis) - arrived from the cosmos (Panspermia) 8.4.1.2 Discuss the implications of the existence of organic molecules in the cosmos for the origin of life on Earth Panspermia * Elements found in space (H, He, C, O, N, P) can combine to form organic molecules. * Some of these compounds including amino acids have been found in meteors that have struck the earth's surface. * Panspermia proposes that living organisms were seeded on earth as passengers on comets and meteors (ie. Life evolved elsewhere and travelled to earth) 8.4.1.3 Describe two scientific theories relating to the evolution of the chemicals of life and discuss their significance in understanding the origin of life Chemosynthesis * Formation of complex organic molecules on
Internal Resistance of a cell
Topic: Internal Resistance of a cell Aim: To measure the internal resistance and emf (the potential differences across a voltage Source when no current is flowing) and to observe the combination of cells Hypothesis: The emf of the old cell is less than the emf of the new cell but the internal resistance of the old cell is much greater than the new cell. Introduction: Resistance in electricity, property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current. Resistance involves collisions of the current-carrying charged particles with fixed particles that make up the structure of the conductors. Resistance is often considered as localized in such devices as lamps, heaters, and resistors, in which it predominates, although it is characteristic of every part of a circuit, including connecting wires and electric transmission lines. (Britannica.2006) The dissipation of electric energy in the form of heat, even though small, affects the amount of electromotive force, or driving voltage, required to produce a given current through the circuit. In fact, the electromotive force V (measured in volts) across a circuit divided by the current I (amperes) through that circuit defines quantitatively the amount of electrical resistance R. Precisely, R = V/I. Thus, if a 12-volt battery steadily drives a 2-ampere
Has Neofunctionalism Been Superseded By A New 'Liberal Intergovernmentalism" As Currently The Most Convincing Theoretical Explanation of European Political Integration?
Has Neofunctionalism Been Superseded By A New 'Liberal Intergovernmentalism" As Currently The Most Convincing Theoretical Explanation of European Political Integration? From an ambitious project originally envisaged to remove the catastrophe of war from such a war-torn continent, the European project has proceeded in 'fits and starts'. Since its inception, there has been much debate regarding what forces drive the integration process forward. Why now, when interstate war in Europe seems impossible, do member states continue to 'pool' their sovereignty in so many areas? Two theories have dominated previous attempts to answer the question of "how and why states cease to be wholly sovereign, how and why they voluntarily mingle, merge and mix with their neighbours, so as to lose the factual attributes of sovereignty."1 Neofunctionalism, the idea that the integration process, once started, develops its own momentum for further integration, saw the height of popularity in the 1960s, following the initial success of the ECSC/EEC and the hugely influential theoretical explanation by Ernst Haas. The second theory, Liberal Intergovernmentalism, surfaced in the 1990s and was championed by Andrew Moravcsik. It saw flaws in neofunctionalist thinking and instead offered an alternative account in which the integrative process was always, and remains, in the hands of national governments;
