Problems with instrumental variables estimation when the correlation Essay

Problems with instrumental variables estimation when the correlation between the instruments and the endogenous explanatory variable is weak - Essay Example To be able to understand the dynamics of a problem it is important to begin with determining the number of variables involved and the relationship between each variable and the problem. It is also important to understand how the involved variables affect each other or one another. The attempt of various researchers to understand the existing relationship has been unsuccessful under non-experimental scenery (Bound, Jaeger & Baker 443). The reason for the failure is the fact that some of the variables are endogenous. In other words, the variables are subject to the same factors that influence the research problem. The endogeniety trait of variables makes the ordinary least square biased and inconsistent therefore, making the research conclusion unreliable. Fortunately, there is a method of reducing the influence of variable endogeneity on research outcome has been determined. The method involves the use of an instrumental variable estimation. However, the method also experiences some problems. First, insufficient explanation of the variation of the endogenous explanatory variables. This could increase the error standard thus invalidates the research outcome. Secondly, the approximated limited samples are biased in the same magnitude as OLS when the coefficient of determination, (R2), between the instrument and the variables diminishes (Bound, Jaeger & Baker 443) To conclude, the problems with instrumental variable estimation are insufficient explanation in the deviation of the endogenous variables and the biases of finite samples when the R2 between the instrument and the variables decreases to zero. Bound, John, David A. Jaeger and Regina M. Baker. â€Å"Problems with Instrumental Variables Estimation when the Correlation between the Instruments and the Endogenous.† Journal of The American Statistical Association 90.430 (1995): 443.

How Serious a Threat to Democracy Is the Far Right in Europe Today Essay

How Serious a Threat to Democracy Is the Far Right in Europe Today - Essay Example However, other citizens although fewer in number, continue to exploit the same freedom so as to challenge existing political systems with a view of undermining equality, civil rights liberty, and at times seriously endangering them (Katz and Mair, 1995). For quite a number of decades, a radical political system was the major cause of the major cause of these challenges. From the late nineteenth century and onwards, including the World War II, democratic regimes incorporated legal measures to exclude the far right parties from the political game (Betz, 1994). In this manner, liberal democracies acted in a manner to ensure their own stability. However, political dynamics within the last decade has led to the emergence of new forms of threat to the stability of the existing democracies. In this context, such threat is referred to as the uncivil society. Notably, such threat seem to more fluid in the structure and the nature of the political parties, thus presenting an even much greater challenge than the subversive political parties towards the democratic regimes in search for measures to ensure stability. In this study, we contend that, in the 21 century achieving stability by outlawing of some far right political parties is no longer an effective strategy. Moreover, contrary to the to the declines of parties and trade off theses , it is argued that, far right parties and the uncivil society are in joint operation to advance similar goals and thus presents the double threat operating right from parliament and within its environs. The changing nature of the political process By 1850, virtually no county in Europe knew the basics of a political party apart from a few small groups of... This paper has highlighted the three objectives, which were exploring how changes took place in the European politics, which were heavily affected by the far right wing activities. Secondly, the paper has explored the boundaries of the within the European political systems and lastly whether the new regimes have completely replaced old regimes or they have forged cooperation’s. In recent years, the changing role of the party institution has had a significant impact on the far right wing parties. As noted it is only until the 1980s that new wave far right parties emerged. Like their counterparts, the new parties can be regarded as cartels which enjoy poor links with the society. The emergence of new forms of governments not only the growth of the far right camps but also plays a role in their expansion. Generally, uncivil society comprises of well established individuals and groups which have the full support of the current politicians and in some extent they have forged allian ces. Notably, the uncivil society is geared toward subverting liberal democracy through their old fashioned political movements. They hope to govern behind the scenes, influencing all the decisions made at national level. Indeed, such strategies are directed at introducing crime and violence. However, social movements are closer to the people as opposed to the political parties. Some grass toot activities carried out to the far right agenda reveals the intolerances as well the hatred in the society. Although political party has changed in Europe, the role of the party as an organization still remains and in fact these is presented in far rightwing ideologies.

The Six Principles of Painting as Applied to Works of Art Research Paper

The Six Principles of Painting as Applied to Works of Art - Research Paper Example The paper "The Six Principles of Painting as Applied to Works of Art" will discuss the six principles and highlight artworks that use each of the principles. The first principle of art that Xie described was that of spirit resonance rhythm and breath. Xie highlighted that artists who qualified gave life to their art pieces. According to Xie, a painting needed to have life so that it could have an impact on the viewer. In his view, work that did not have any spirit resonance or rhythm was useless and dead. Symbolically, Xie described a viewer seeing the art of an artist as practically taking in the artist’s breath. One of the Chinese paintings that reflect this principle is Emperor Huizong’s artwork titled Auspicious Cranes. The work was 112.5 Ãâ€" 138.2 cm in size. It belonged to the Liaoning Provincial Museum in Shenyang. Emperor Huizong was a leader of his dynasty, but who exhibited an artistic talent. Despite the need to focus on leadership issues, he found time to practice the art. In this painting, he was striving to depict a poetic idea. An inscription on the painting depicted the idea he sought to communicate. The poem described how immortal birds appeared next to clouds in an effort to announce good tidings. In the poem, he highlighted that the birds arranged themselves in twos forming a noble arrangement. The painting depicted 20 white cranes, forming a design above the sky, which appeared as though it was just above the city gates. From the poem next to the painting, it became evident that Huizong.

The Value of HRM to Business Organisations Essay Example for Free

The Value of HRM to Business Organisations Essay This essay will evaluate the literature available on the value of the selection method of personality tests to business organisations. These tests measure individual’s responses to what are usually fixed choice questions to uncover characteristics that have important implications for their job performance (Beardwell and Claydon, 2007). Personality tests were first reviewed in a personnel selection context in 1965 (Guion and Gottier, 1965) but it is only recently that they have become popular with around 30% of companies using them (Heller, 2005), particularly for candidates applying for managerial and graduate jobs within the top companies in the UK (Faulder, 2005; Newell, 2005: 133). However, despite their popularity there is still continuing controversy in debates surrounding this selection method. These debates will be explored alongside identifying relevant concepts such as the validity and reliability of personality tests which have implications for their value to business organisations. Although there are many debates surrounding personality tests they can be broadly grouped into four main areas (Taylor, 2005). The first of these debates concerns whether and to what extent it is actually possible to measure an individual’s personality. The uptake of personality tests highlights that there is now a level of agreement that personality is measurable, but there is a need therefore to adopt similar systems of personality descriptions if findings are to be compared (Newell, 2005: 134). The five factor model also referred to as the â€Å"Big Five† is close to achieving this as it becomes more readily accepted as the model of choice when constructing personality tests (Robertson, 2001). This model breaks personality into five important traits of open to experience, agreeableness, emotional stability, conscientiousness and extraversion (Rothstein and Goffin, 2006) with the latter two being considered the most valid predictors of job performance (Barrick and Mount, 1993), however it is important to note it is not without its critics (Murphy and Dzieweczynski, 2005). Furthermore, when using personality tests in selection an individual’s willingness to be honest when answering questions needs to be considered and will be explored in more detail later (Torrington, 2005). Secondly, there is much discussion about whether personality is context dependent (Torrington, 2005: 152) or whether it remains consistent over time (Barrick and Mount, 1993). This has significant ramifications for the value of personality tests in selection methods and specifically the reliability of research to establish its predictive value. There would be ultimately no value to a business organisation spending resources to measure a characteristic which is fluid as it would only serve to identify an individual’s personality at one point in time. This issue also feeds into the notion of faking personality tests and social desirability which has been the subject to much research into reliability (Furnham, 1986). It has been argued that such limitations in selection can be overcome by implementing detection measures into tests which can expose when a candidate is trying to fake their responses (Dalen et al, 2001). Another debate which is central to the use of personality tests as a selection method is whether personality characteristics can really be matched as necessary for a specific job. As some jobs will pose more constraints on an individual than others and therefore limit their ability to express their personality (Barrick and Mount, 1993). This perhaps explains why the increased uptake in personality tests has been specific to certain types of work where this matching is possible (Taylor, 2005) and therefore that in a large amount of recruitment the use of personality tests would be undesirable and pose little value to the business organisation. The final debate which has implications for the value of personality tests is whether the method, i. e. the completion of a fixed questionnaire, provides a suitable depth of information about the candidate’s personality to make decisions about their suitability for the job they are applying for (Taylor, 2005). Iles and Salaman (1995) have argued that these measures are stronger predictors than had previously been thought but there have been many limitations of studies demonstrating its predictive value. Armstrong (2006) points to the need to have tests which are sensitive, standardised, reliable and valid in order for them to be considered effective. It has also been suggested that instead personality tests should be used as part of a two way process whereby results are discussed during interviews to consider how an individual would deal with certain situations (Newell, 2005). This would perhaps help manage the limitation that individuals feel pressurised into giving a ‘right’ answer and therefore fake their responses to a personality test. Throughout these debates there is the reoccurring theme of the need for reliability and validity in personality tests, as with any other selection method a business organisation may adopt. Here it is important that the method is consistent in its measures both throughout the personality test itself and should the personality test be applied to individuals over time. Furthermore, the predictive value will be heavily affected if no clear relationship is established between the tests results and job performance (Newell, 2005). In conclusion, from the literature review it is evident that there is still little clarity or agreement about the validity and reliability of personality tests as a selection method. What is certain, however, is that it is necessary to carefully match certain personality characteristics against aspects of performance on the job for personality tests to have predictive value. Building on this literature review, this essay will now focus on and describe the research findings of two relevant papers.

Sociology And Its Aim Essay -- Sociology Essays

Sociology and Its Aim   Ã‚  Ã‚  Ã‚  Ã‚  Sociology is the scientific study of society and human behavior. This is the most basic definition of sociology that one would find. Getting a little more in depth, it is the study of humans in groups and how they interact with one another. A scientist in this field, a sociologist, would look at these groups by means of the sociological perspective. This involves looking at a certain behavior like you have never witnessed it before. If done correctly the sociologist should be able to gain a new level of understanding of the behavior or social reality.   Ã‚  Ã‚  Ã‚  Ã‚  The term group could refer to a lot of things as far as groups of people. It could be two people but for the purpose of sociology it should be a lot more. There are demographic variables used when defining the group. These are things such as race, religion, sex, social class, and so on.   Ã‚  Ã‚  Ã‚  Ã‚  When a sociologist studies behavior the most important aspect they view is the interaction of people both within the group and with people that fit into other groups. This action can be what the individuals verbally say to one another or simply their nonverbal messages. There are many hand signs, both good and bad, that people exchange as well as facial expressions in reaction to an event or statement. Now that I have some of the terms described lets look at an example.   Ã‚  Ã‚  Ã‚  Ã‚  I hate lawyers. This is a personal...

Dell Computer Sustainability Performance Metrics Essays -- Business, S

Dell Computer Sustainability Performance Metrics Dell Computer Corporation is the world’s largest supplier of personal computers (Fleming, 2006). Dell’s goal is to be â€Å"the greenest technology company on the planet† (Ball, 2008, p. 1). Hence, Dell, like many corporations today, establish sustainability initiatives to persuade regulators, stakeholders, and consumers of their commitment to protect society and the environment. However, companies must support these claims with tangible performance metrics. Thus, some of the processes, programs, and reports Dell using to identify and measure performance is examined. Performance Measures Dell Computer Corporation believes stakeholders must be given long term value by ensuring the company commits to and integrates economic, social, and environmental sustainability into its business practices (Litten, 2005). Hence, Dell’s commitment to this goal is evidenced by becoming a Ceres company (Fleming, 2006). Ceres is a national coalition of investors, environmental groups, and public welfare organizations assisting companies with sustainability efforts. Thus, Dell was lauded for being the first in the computer industry to partner with Ceres (Fleming, 2006). Moreover, companies involved with Ceres must agree to the following terms: discuss sustainability issues with shareholders and stakeholders, release sustainability reports to the public, and commit to continuously improve sustainability efforts (Fleming, 2006). Thus, an assumption can be made based on Dell’s definition of sustainability and its Ceres affiliation that industry standards, sustainability performance, and shareholder reaction are key performance drivers. Consequently, aspects of this assumption are found in Del... ...ould be measured or what constitutes a â€Å"footprint† (Ball, 2008). Consequently, Dell is no different than other corporations attempting to calculate emissions on their own terms. Conclusion The relevance of sustainability is clear. Regulators, stakeholders, and consumers expect corporations to account for the impact their business practices have on society and the environment. Hence, corporations must not only promise to act they must also provide realistic, tangible performance metrics that magnify their level of commitment. While this is a challenge all corporations face Dell has embraced the challenge. Dell’s sustainability performance is measured, monitored, tracked, and made public through its annual sustainability reports. Inasmuch as sustainability is continuous more work needs to be done. However, Dell’s overall scorecard is impressive.

The Mission

The Mission takes place during the Jesuit Reductions in the seventeenth and eighteenth centuries. During this time many Jesuit missionaries established missions independent of the Spanish state in order to teach the native inhabitants Christianity. Leading this cause is Father Gabriel, a Spanish Jesuit Priest, who arrives in the Jungle in South America to set up a mission and convert a small village of Guarani Indians. In the beginning of the film, there is an image of a Jesuit missionary tethered to a cross which is being sent over the massive Gauze Falls.This act encourages Father Gabriel to try to reach out to the tribe. Guarani warriors track Father Gabriel down, prepared to kill him, as he tries to make his way to their village. Gabriel is able to calm the warriors down by playing a song which is the beginning of his acceptance into the tribe. The movie then shifts to Roding Mendoza, a slave trader and mercenary, who is filled with guilt after killing his brother and is looking for repentance. Father Gabriel, after finding out about Mendoza actions, seeks him out to offer him a way to repentance and salvation.Once Mendoza agrees, his armor ND weapons are bound within a satchel that is attached to his waist and he is challenged to scale the cliffs of Gauze Falls. He makes it up the falls and to the Guarani camp where he is met with skepticism and disdain. Eventually, one of the Guarani cuts the satchel off and throws it into the falls representing the forgiveness of the tribe and him being released from his penance. Mendoza then becomes a Jesuit under the guidance of Father Gabriel. The Guarani's gain confidence in Father Gabrielle mission from the leadership he portrays and the eagerness of the Guarani's to learn.During all of this, there are political events going on as well. Spain and Portugal sign a treaty ordering Spain to transfer the control of some land, which includes the land containing Father Gabrielle mission. This was a critical agreement since Spain had outlawed slavery but slavery remained legal in Portugal. As a result, the Jesuits have to fight to protect the missions from Portuguese slave traders. The threat being posed by the Portuguese leads papal emissary Alliteration (a representative of the pope) to make a decision about whether or not the mission should be shut down.Alliteration is torn between two controversial options; either he can side with the colonists and close the mission leading to the enslavement of the Guarani or he can side with the missions leaving the Jesuit to face the Portuguese government. He eventually decides to close the mission but Father Gabriel and Mendoza refuse to obey the decision. The two try tactics of fighting and peace to resist the Portuguese but are eventually taken down by the Portuguese army and the mission is burned down and the Priests and Guarani adults are massacred.Spain and Portugal, the Church administrative hierarchy, and the Jesuit order can e described as having their own culture as institutions based on the apparent separation of motives between each which came from the different ways of thinking that were developing at the time. The Jesuits showed a genuine care about the spiritual well-being of the Guarani people where Spain and Portugal were not as charitable as represented by the government officials. Spain and Portugal had a culture that was based off of nationalistic viewpoints. Spain and Portugal were competing for power in the New World and were unsure about how to treat the native people.Spain's idea was to maintain control by forcing Christianity and their ultra on to the natives. Portugal Just looked to enslave them to show their superiority. Both countries, though, looked for power instead of trying to help the natives accept a new way of life as these countries brought over colonists. Their main concern was to benefit their country versus helping others. These countries would do anything to show their countries power, including tak ing away power from the church to control the fate of the mission. This is made obvious in the scene where the Pope's emissary, Ultramarine, is to decide the fate of the mission.Father Gabriel sees the datives as naturally spiritual and tries to defend the Jesuit position. Portuguese officials see the tribe as unfit for civilization and eventually kill off any natives that resist their rule once the mission is disbanded and enslaves the rest. Either way Ultramarine went, it seemed that Portugal would get its way in the end. From this it is also evident what the motive of the Church was; which was to maintain authority on the outcome of the Guarani project. With the revolts going on against the Church, the Church wanted to use the control they did have to get their agenda completed.Jesuit missionaries were left to succumb to their decisions and this affected the final outcome of the mission as well as the everyday business of the missionaries. The Jesuit missionaries started to try t o break away from the church by not forcing European customs on the natives. In this way they started to become enlightened. Ultramarine did go and experience the missions but he saw the economic practices of the mission to mirror that of radical French Socialism rather than understanding that it was a direct result of what they had learned from the New Testament. WhenUltramarine encountered some Guarani natives who could barely be recognized as such, he was fully pleased. This shows how the Church wanted the natives to completely conform to their ways and culture instead of bringing out the good in the natives like the Jesuits were trying to do. The authorities of the church wanted one thing while the missionaries wanted another. The Jesuits crossed cultural boundaries by merging their beliefs and teachings with the Guarani culture. The Jesuit missions expected the natives to convert to Christianity but generally did not expect them to adopt the European cultural norms.The Jesuits also crossed cultural boundaries by trying to give the natives social mobility. The Jesuits gathered the Guarani into these missions to protect them while they taught them how to read and write as well as be self-productive. Works Cited Hounded, Anthony. â€Å"Reductions of Paraguay. † CATHOLIC ENCYCLOPEDIA:. Robert Appleton Company, n. D. Web. 17 July 2014. â€Å"The Jesuit Missions: Their History. † The Jesuit Missions: Their History. N. P. , n. D. Web. 17 July 2014. Bulgaria, Lenore. â€Å"The Jesuit Missions in South America. † Catholicism. N. P. , 23 Mar. 2011. Web. 17 July 2014.