Assignment 1 in Psychology Research Method Example | Topics and Well Written Essays - 2000 words

1 in Psychology Research Method - Assignment Example The first group was handled daily from 3 to 14 weeks of age, the second from 7 to 14 weeks of age and the third received no handling from birth to 14 weeks. Different experimenters handled each kitten on different days. "Handling" was defined as an experimenter holding a kitten on his/her lap while petting it for 15 minutes. Friendliness was measured by how long each kitten stayed with the experimenter when not restrained, and by how long it took each kitten to reach the experimenter. Karsh found that the kittens handled from 3 to 14 weeks stayed longer with the experimenter and ran more quickly to the experimenter than kittens handled from 7 to 14 weeks. Also, kittens handled from 7 to 14 weeks were more "friendly" than kittens who received no handling at all. Karsh concluded that kittens should be handled as early as possible to ensure life-long friendliness towards humans. What are the possible confounds in Karsh’s experimental design: The possible confounds in Karsh’s experimental design are the way experimenters handled each kitten on different days. Each experimenter will hold a kitten on his/her lap while petting it differently for 15 minutes. The petting a kitten will be different for each experimenter and each kitten will feel it differently. This have affect on both handling and friendliness in cats. An investigator believed that sensory deprivation inhibits the intellectual development of animals. He ran an experiment to examine this thesis in the following way. He used two rats, each of which had just given birth to eight pups. One rat and her litter were placed in a large cage. This cage had ample space and lots of objects to explore. The baby rats in this cage breastfed off their mother. The second rat’s pups were separated from the mother, and each was placed in a separate cage. These cages were quite small, and the only objects they could see or hear were the four walls and the food and water

Analytical Hierarchy Process Essay Example for Free

Analytical Hierarchy Process Essay Abstract The analytic hierarchy process (AHP) provides a structure on decision-making processes where there are a limited numbers of choices but each has a number of attributes. This paper explores the use of AHP for deciding on car purchase. In the context of shopping, it is important to include elements that provide attributes that make consumer decision making easier, comfortable and therefore, lead to a car purchase. As the car market becomes more competitive, there is a greater demand for innovation that provides better customer service and strategic competition in the business management. This paper presents a new methodological extension of the AHP by focusing on two issues. One combines pair wise comparison with a spreadsheet method using a 5-point rating scale. The other applies the group weight to a reciprocal consistency ratio. Three newly formed car models of midsize are used to show how the method allows choice to be prioritized and analyzed statistically. INTRODUCTION The Analytic Hierarchy Process (AHP) is a structured technique for helping people deal with complex decisions. Rather than prescribing a correct decision, the AHP helps people to determine one. Based on mathematics and human psychology, it was developed by Thomas L. Saaty in the 1970s and has been extensively studied and refined since then. The AHP provides a comprehensive and rational framework for structuring a problem, for representing and quantifying its elements, for relating those elements to overall goals, and for evaluating alternative solutions. It is used throughout the world in a wide variety of decision situations, in fields such as government, business, industry, healthcare, and education. Users of the AHP first decompose their decision problem into a hierarchy of more easily comprehended sub-problems, each of which can be analyzed independently. The elements of the hierarchy can relate to any aspect of the decision problem. Once the hierarchy is built, the decision makers systematically evaluate its various elements, comparing them to one another in pairs. In making the comparisons, the decision makers can use concrete data about the elements, or they can use their judgments about the elements relative meaning and importance. It is the essence of the AHP that human judgments, and not just the underlying information, can be used in performing the evaluations. The AHP converts these evaluations to numerical values that can be processed and compared over the entire range of the problem. A numerical weight or priority is derived for each element of the hierarchy, allowing diverse and often incomm-ensurable elements to be compared to one another in a rational and consistent way. This capability distinguishes the AHP from other decision making techniques. In the final step of the process, numerical priorities are derived for each of the decision alternatives. Since these numbers represent the alternatives relative ability to achieve the decision goal, they allow a straightforward consideration of the various courses of action. EXPLANATION For instance let’s consider cars (an example) which touch the lives of hundreds of millions of people nearly everywhere on this planet on a daily basis. Other than a house, a car is perhaps the largest purchase that we make. With the average cost of a car well over US$ 15,000, choosing just the right one becomes a major decision. Buying a new car is regarded as a decision-making problem and a reflection of customer preference. Someone shops for a new car, he or she want to take a look at finances and options. The possible budget is then a constraint in the decision on which car to buy. Most people shopping for a new car rank safety high among their purchase considerations. Other important attributes include: fuel economy; comfort and convenience features; insurance information; specification and warranties and resale value. Constant changes in customer demands lead manufactures to produce new and improved designs. Automation of manufacturing technologies allows this. Recently the production life cycle has become shorter. For example, General Motors in the USA is leading the industry in developing ground-breaking technologies to improve the driving experience and to meet the changing needs and life styles of modern drivers. They are making efforts to lower the cost of the technology to a level that will make advanced cars an attractive purchase. As the automobile market becomes more competitive, the industry has no choice but to adopt innovation that brings better customer service. Many customers seek advice from car experts or friends when purchasing a car. In many cases, there are times when the price and special features do not match the budget. An appropriate decision-making method for selecting the best car is useful to both customers and producers. An analytic method not only reduces the dealers burden, but also may increase sales The analytic hierarchy process (AHP) is an intuitively easy method for formulating and analyzing decisions .It was developed to solve a specific class of problems that involves prioritization of potential alternate solutions. This is achieved by evaluation of a set of criteria elements and sub-criteria elements through a series of pair wise comparisons. The AHP model depicted in this paper uses the following decision criteria: exterior, convenience, performance, safety, economic aspect, dealer, and warranty as well as 39 sub-criteria. For the implementation of the AHP, we considered the three midsize passenger car models as alternatives 2. EVALUATION CRITERIA The source for deriving the evaluation criteria candidate was: 1. A telephone interview with dealers who are part of companies that make the models. The manufacturing company with the highest market share considered graceful body styles and smart design of facilities related to safety to be most important. On the other hand, warranty on the car and the dealers strategies for marketing are regarded as important customer criteria; 2. The use of personal experiences recorded on an online bulletin board was corrected using the Internet; The AHP model shown consists of three levels. Exterior involves components and factors seen from the outside such as color, length and width, tyres, trunk, wheels, doors and headlamp styles. It includes the following sub-criteria: model, style, length, quality of interior decoration, number of available color types, and instrument cluster. Convenience is related to the design of the equipments for easy operation. It includes: inside width, ease of loading or unloading packages, convenience of operating instruments, modern fittings (such as electronic systems and a burglar alarm), forward visibility and quality of the audio system. Performance is related to the functioning of the car. It includes maximum torque, maximum speed, fuel tank capacity, braking ability, cornering ability, inside noises and traveling comforts. Safety is enhanced by a body designed to protect the drivers and passengers against collisions. The most important safety features are those that reduce the risk of death or serious injury. It includes: airbags, antilock braking system ABS, impact protection systems, trunk safety, seat belts, safety of the body and number of alarm facilities. Airbags provide total chest and face protection. The ABS allows drivers full steering control and shorter stopping distance in adverse situations. The economic aspect refers to the price and cost of a new car, or maintaining the car within budgets, etc. It includes: purchasing prices, fuel consumption per month, insurance costs and installment conditions, resale prices of used cars and optional equipment costs. The dealer criterion refers to personal characteristics and attitudes that lead the customer to make the purchasing decision. This criterion includes: visits or calls needed to persuade the customer to buy, the dealers attitude, the dealers expertise and belief in the dealers promises. The warranty criterion include: the number of service stations, ease of acquiring spare parts, customer satisfaction after services, and the average repair time for minor troubles. We mailed questionnaires to each of two groups. The first group was given a questionnaire that contained a pair wise comparison sheet. The members consisted of 13 managers who were serving in the sales department and who had experience exceeding 10 years (see Appendix A for this questionnaire). Respondents were domain experts who easily recognized their own sales products and have valuable knowledge about the customer requirements and preferences. Twenty-two potential customers with experience over 7 years were in the second group (see Appendix B). They answered about their satisfaction with their current car. 3. Implementation and ranking A procedure of prioritizing each car model is shown in Table 1 shows the C.R. for each individual, where the circle represents meaningful C.R. Using Expert Choice, we obtained the synthesized priorities of the main criteria and sub-criteria. The reason that the groups weight is 1/C.R. is to assign higher weights for higher consistent persons. As a result, safety gains are the highest priority in the main criteria. The body safety is especially important. The synthesized priorities and ranks resulted in Table 2 (Case-II). The priorities of the sub-criteria are not proportional to those of the main criteria. This means the decision-makers have different opinions on the importance of the main criteria. By synthesizing the drivers rating values with the priorities, we obtain the priorities of the car models and the ranks with respect to the goal and synthesized priorities for each main criterion when the C.R. is bounded by the limit (see Table 3). In Case-I and Case-II, the computational methods used are reasonable when the groups consistency is more important than the individual ones. Because the conventional AHP has no choice but to increase the Delphi rounds in order to increase the groups consistency, much effort is required to reduce the C.R. If the Delphi rounds are not sufficiently processed, it is unreliable through the inclusion of inconsistent matrices [12]. Using the Spearman rank correlation test [1], accepting H0 means that the ranks are either uncorrelated or negatively correlated. That is, two decision makers exhibit an insignificant level of agreement in ranking for each criterion. Rejecting H0 means that the ranks are positively correlated. As shown in Table 4, we conclude that there are significant effects between groups since the rate of the H0 acceptance is 83% (65/78 Ãâ€"100). This shows that Case-I is the more appropriate method. It rejects greater agreement between groups. 4. SENSITIVITY ANALYSIS Sensitivity analysis allowed us to verify the results of the decision. A sensitivity analysis can be formed to see how sensitive the alternatives are to change with the importance of the criteria. The Expert Choice implementation of AHP provides four graphical sensitivity analysis modes: dynamic, gradient, performance and two-dimensional analysis [4]. Here performance sensitivity analysis is employed. It depicts how well each alternative performs on each criterion by increasing or decreasing the importance of the criteria. In addition to this, each sub-criterion performs on each main criterion by increasing or decreasing the importance of the main criteria. It should be noted that if a criterion is not sensitive, it would be better to eliminate it from the AHP model. In the case of increasing importance of a criterion to the maximum value of 1.0, we assigned the alternative that gained the highest rank to score 5 and the lowest rank to score 1. The value of Model 1 is 25, Model 2 is 21 and Model 3 is 15. In summary, we can conclude Model 1 is the best among the alternatives, although the highest priorities were different in Case-I and Case-II. 5. CONCLUSION This paper presents a decision-making method for selecting the best passenger car models through combining the AHP and a spreadsheet model. The C.R. is used as the decision-makers weights. As an implementation of the AHP, three car models were prioritized. Through the sensitivity analysis, the fact that Model 1 ranked the highest is consistent with the result of the highest market share. References E.H. Forman, T.L. Saaty, M.A. Selly, R. Waldron, Expert Choice, Decision Support Software, McLean, VA, 1983 T.L. Saaty, K. Kearns, Analytical Planning: The Organization of Systems, Pergamon Press, Oxford, 1985. Y Wind and T L Saaty, ‘Marketing Applications of Analytic Hierarchy Process,’ Management Science, Vol. 26, No. 7, July 1980

Free Essays on Homers Odyssey: Book XIX :: Homer Odyssey Essays

The Odyssey Book XIX In Book XIX of Homer's The Odyssey, Odysseus, posing as a poor beggar, has a discussion with Penelope regarding Odysseus himself, and how the "two" met. Readers may question why Penelope does not recognize her own husband. Later on, one sees that at least Eurycleia distinguishes Odysseus. Penelope reveals a dream she has had to Odysseus, asking for an explanation. This Book of The Odyssey brings forth an envisage regarding the death of the suitors that is soon to come. Book XIX starts with Telemachus and Odysseus removing the arms by the light of Athena and storing them for safety as the suitors retreat for the night. Odysseus sends Telemachus off to bed and prepares "to test the women, test [Telemachus's] mother too" (391).1 Penelope, and everyone else for that matter, is now under the impression that Odysseus is a beggar. Melantho starts the discussion by lashing out on Odysseus. Penelope, in defense of the beggar, scolds Melantho, saying, "Make no mistake, you brazen, shameless bitch ... my heart breaks for him" (393). Penelope, well aware of the relationship between the beggar and Odysseus, asks Eurynome to bring out a soft chair in order than the beggar can tell his story. She wishes to ask him careful details about his friendship with her missing husband. Odysseus begins by flattering Penelope, but she says her only concern is her husband whom she misses. She explains that a plan was devised by her, stating that when she finished a web she was weaving, she would marry a suitor. Each night she unraveled what she had done. She goes on to ask of the beggar's past. The beggar mentions Crete and then Cnossos, where he says he had met Odysseus. He tells of how he then brought Odysseus to his home and "treated him in style" (396). He explains that the wind kept Odysseus and his crew at the beggar's home, and on the thirteenth day when the wind died down, the Achaeans could finally set sail for Troy. Penelope weeps as she listens to Odysseus's tale. To test the beggar further, Penelope asks what kind of clothes Odysseus wore, what cut he was, and what sort of people followed him.

Joseph Conrad’s The Heart of Darkness Essay

Joseph Conrad’s The Heart of Darkness has foreshadowing that adds a lot of suspense throughout the book. Conrad used foreshadowing through minor details that are not clearly stated and are to be interpreted as the book continues. The setting of the book–on a small sailing craft on a river as night falls–and Marlow’s comparison, by implication, of the dark heart of Africa (the Belgian Congo) and the barbarian darkness on the northern fringes of the Roman Empire, both are examples of irony and foreshadowing. In the beginning Marlow is remembering what it may have been like to be a young Roman conqueror exploring through the jungle. He would have had to deal with â€Å"†¦cold, fog, tempests, disease, exile, and death†¦Ã¢â‚¬  Marlow mentions how the soldier would have had a â€Å"fascination of the abomination† . Later in the book this same fascination overcame Kurtz after his long time in the Congo, â€Å"he hates sometimes the idea of being taken away† . Even when Marlow finds Kurtz, he can’t â€Å"break the spell – the heavy mute spell of the wilderness – that seemed to draw him to its pitiless breast by the awakening of forgotten and brutal instincts† When Marlow begins to share his story about an earlier sea voyage, he shares with his fellow mates a story about how one of their captains was killed because of a fight that arose over two black hens. Fresleven, one of the men in the fight, began to beat a native because of his desire for the hen. The native’s son broke up the fight and â€Å"made a tentative jab with a spear at the white man – and of course it went quite easy between the shoulder blades† . Marlow then takes Fresleven’s job as captain of the ship, stepping into his shoes. Later on in the book when Marlow’s ship is under a light attack, his helmsman was speared through the ribs, causing him to die. Blood filled Marlow’s shoes, and he threw them overboard. This is an example of foreshadowing, because Marlow fills Fresleven’s shoes without realizing the full extent of the job. It also an example of irony, because when Fresleven, a nice white man is killed, nobody was shaken, yet when the savage was speared Marlow was full of regret. Another example of irony is that Africa is constantly being described as a dark and gloomy place in the novel, but the Europeans are the ones that actually have the dark hearts. The Africans only get violent because they want to keep their culture alive, and the Europeans are willing to throw that away as long as they earn a profit. The only reason the Europeans wanted to invade Africa was for commercial benefits, and that is dark Another example of foreshadowing is the two women knitting black wool outside the office Marlow visited before he went on his journey. The color black often appears to Marlow when he is headed for trouble.. The women were sitting outside, drawing in unsuspecting youth ready for adventure, yet unaware of the danger ahead. Later in the book when Marlow is following Kurtz into the dark, dangerous forest, he reflects that â€Å"the knitting old women with the cat obtruded herself upon my memory as a most improper person to be sitting at the other end of such an affair† . Conrad used irony and foreshadowing by describing the different scenes in a very dark tone that when looking back at them after certain events happen in the book show the way that specific narration such ,as the lady’s knitting black wool, links to the events following it.

Changes in Prisons in Twentieth Century in Britain Essay

In 20th century a lot of important changes was made in Britain prison system. A lot of crucial moves in this matter were made, which made changes to the system, and create the current system in prisons. A lot of reports and changes plans were made in this crucial for the matter period. The beginning for this period was made in 1895 with Gladstone report, which was highly critical of the current penal policy. It criticised existing regimes for ‘crushing self respect’ and ‘starving all moral instinct’. The report argued that reformation should coexist with deterrence and that rehabilitation should be given priority. Victorians focused upon repression and punishment. They used inflexible and punitive methods of control. Gladstone felt these should be replaced with more scientific methods of ‘treatment’. In addition, prison commissioners for the first time in 1898, defined the purpose of prison as the ‘humanisation of the individual’1. Sir Evelyn Ruggles-Brise insisted that ‘each man convicted of crime is to be regarded as an individual, as a separate entity of morality, who by the application of influences, of discipline, labour, education, moral and religious, backed up on discharge by a well organised system of patronage is capable of reinstatement in civic life’2. Weiner (1990) stated, â€Å"It is now recognised that primitive measures alone are not corrective, and effective reformation of criminals can only be attained by making our prisons true schools and moral hospitals†. Forsythe (1991) argues that new projects often fell short of the claims made for them. He says that in particular, the local and convict prisons ‘clung tenaciously to the concepts of measured punishment, moral culpability, limited deterrence and uniformly administered discipline’. It is a fact that the process of reform was often slow and not al all easy to perceive. From 1900 onwards a number of radical changes were made to the standard prison regime: 1) Unproductive labour was officially abandoned and replaced by prison industries and work considered ‘useful’, 2) The separate system was gradually eroded, allowing prisoners to work in association, 3) Education was increased and improved, 4) Internal discipline was maintained through a reward/punishment system related to the introduction of remission, 5) Specialists such as psychologists were appointed, 6) Prisoner categorisation was extended, 7) The Borstal system was introduced for juveniles, 8) A commitment to reformation became enshrined in the Prison Rule that stipulated that the purpose of imprisonment was to encourage prisoners to ‘lead a good and useful life’3, 9) During the 1930s the treadmill and arrows on convict uniforms were abolished. According to Garland (1985) the most radical reforms of this era took place outside of the prison system: 1) The introduction of the probation service, 2) Alternatives to custody emerged, 3) Construction of specialist institutions4. Garland views these major transformations as the beginnings of our current practice. Garland prefers to talk of developments in a whole realm of penality rather than prison reform5. Additionally, in 1908 Borstals6 were put on a statutory footing – implemented by Herbert Gladstone. The name Borstal comes from the village in Kent where the first Borstal scheme got its first full-scale trial. Borstals took English public schools as their model and their sentences were indeterminate. Criminals aged between 16 – 21 could be sent to Borstal for between one and three years. The prison Commission could release on licence at any time after six months (or three months for girls) and could also recall for misbehaviour. Borstal faltered after 1945 really because success rates were measured by reconviction rates. 1982 the administration of Margaret Thatcher formally abolished the Borstal and replaced it with the ‘Youth Custody Centre’ – with determinate sentences of imprisonment. Paterson7 replaced military type training with delegated authority and encouragement of personal responsibility. Staffs wore civilian clothing and were encouraged to get to know the ‘lads’ personally – considered revolutionary in the 1920s. The Borstal notion of training prisoners through personal relations, trust and responsibility gradually had an impact on the prison system as a whole. Two borstal elements were transplanted into the adult system with long lasting effects: 1. 1936 the first minimum-security (open) prison was established at New Hall, near Wakefield. 2. The housemaster was renamed ‘assistant governor’. The post war developments where about the Easier bail, Probation, Time to pay fines, a reduction in time to be served for a partial payment of fines, Reformatories for juveniles, Curtailment of imprisonment for debt and, More facilities for the insane and for habitual drunkards. In 1928 the then Home Secretary had described Dartmoor convict prison as ‘the cesspool of English humanity’ â€Å"I suppose there must be some residuum which no training or help will ever improve†8. Furthermore in 1948 Paterson and his colleagues framed Criminal justice Act. This was a highly influential piece of legislation. Borstal had represented the opposite view and resurrected the possibility of reformatory prison. Borstals and Detention Centres began to lose favour: neither for deterrence or reform was the short sentence acceptable. This is one of the elements in the English prison-crowding crisis – which became acute in the 1970s and 1980s and with which the country is still wrestling. Deterrence – Youth prisons known as Detention Centres were intended to subject boys (and half-heartedly, girls) who were thought to be on the verge of a custodial career to a last chance ‘short, sharp, shock’. Separate institutions for pre trial prisoners were planned but never created: these would be custodial but non-penal institutions. Due to the war, there were no funds and little sympathy for unconvinced detainees. McConville states that ‘thick skins and short purses ever since have ensured that English pre trial prisoners were treated worse than they were for virtually all of Victoria’s reign and much worse than their fellows who were convicted and sentenced’. The 1960s and early 1970s are seen as the beginning of the crisis years with British prisons. At last we can refer to System of Concentration. Mountbatten referred to the obvious advantages of an island prison holding all prisoners who posed a threat. A new prison was to be built on the Isle of Wight. This was rejected and the dispersal system became the preferred way of housing inmates. Since early 1966 new measurements of security have been implemented in selected prisons. Between 1969 and 1979 the prison service went through a number of riots. 70s and 80s dogged with accusations of brutality and violence directed at prisoners from the prison staff. Serious disturbances and riots had occurred in maximum-security prisons, which had led to reprisals against prisoners. British riots occurred within the new dispersal system: Parkhurst 1969, Albany 1971 & 1972, Gartree 1972, Hull 1976, and Gartree 1978. Hull riot will go down in history, as it was the prison staff who were ultimately tried and convicted. Special control units were introduced after the Gartree riot of 1972 for troublemakers over and above the existing segregation units. 1970s represent the years when reform and treatment had dwindled away and the whole prison system ran on the notion that ‘nothing works’. By 1978 both the courts and the prisons were in danger of serious collapse. Industrial relations were poor with prison staff. May Committee 1979 reported as a response to the previous troubled decade. They explored the issues of what the aim of imprisonment was; they agreed that the rhetoric of treatment and training had had its day. Finally, King and Morgan proposed the term ‘humane containment’: 1. Minimum use of custody 2. Minimum use of security 3. Normalisation. The current organisation of the prison system is heavily influenced by past practice. This has shaped the system that we now have today. So, it is difficult to assess progress of 20th Century. Harsh and punitive experience of prison overrides any idea of progressive treatment. Biggest rises can be seen from 1974 onwards. It is a fact that this matter is very important and serious for the society and has to be developed according to the needs of the society according to its progress at times. BIBLIOGRAPHY: 1. Goffman, E. (1961) Asylums, Essays on the Social Situation of Mental Patients and Other Inmates. Harmondsworth 2. Jones, K. (1993) Asylums and After: A Revised History of the Mental Health Services from the Early Eighteenth Century to the 1990’s. 3. Morris, N and Rothman, D.J (eds). (1995) The Oxford History of the Prison. Oxford University Press. 4. Porter, R. (2002) Madness: A Brief History. Oxford University Press. 1 Weiner, 1990. 2 Ruggles-Brise quoted in Garland 1985. 3 Prison Rule 6 in 1949 but Prison Rule 1 since 1964. 4 such as Borstal where principles of rehabilitation were initiated. 5 â€Å"the prison was decentred, shifted from its position as the central and predominant sanction to become one institution among many in an extended grid of penal sanctions. Of course it continued to be of major importance, but it was now deployed in a different manner, for a narrower section of the criminal population and often as a back up sanction for other institutions, rather than a place of first resort†. 6 The Borstal System. 7 Alexander Paterson. 8 Sir William Joynson-Hicks.