Critically evalutate the evidence that criminal profiling is effective Essay

Critically evalutate the evidence that criminal profiling is effective - Essay Example It is usually carried out in a three stage process: â€Å"First, police officers collect crime scene data and forward it to a profiler; second, the profiler conducts an analysis of the crime scene data; and third, the profiler provides predictions about the type of individual likely to have committed the crime in question.† (Snook et al,, 2007, 438) There was initial enthusiasm for this approach, especially in the United States where the FBI set up a special ‘Behavioral Science Unit’ which analysed crimes and made recommendations for the application of criminal profiling in serious crime cases. From the beginning it was clear that the process involves multiple skills and multiple agencies, being a technique that combines elements of both art and science (Cook and Hinman, 1999, 230) and crosses over traditionally constructed professional boundaries. There has been discussion about some of the tensions arising from this multi-disciplinarity, and the gulf between res earchers and practitioners. (Alison et al, 2004). Critical opinion on the practice of criminal profiling has been mixed, ranging from positive evaluations to serious doubts as to whether criminal profiling is any more valuable than common sense. This paper reviews the underpinning theories behind criminal profiling, discusses its methodologies and the problems that can arise in its use, and then finally evaluates its effectiveness. Theories behind criminal profiling. Psychology is the major science behind criminal profiling and its origins can be traced back to the beginning of the twentieth century: â€Å"the inferring of general characteristics of a person on the basis of a limited amount of information about them, has scientific roots in psychometric testing.† (Canter, 2000, p. 3) This in turn is based on a large body of research into the variation that exists between individuals. Psychologists searched for ways of isolating small individual features which, when considered together and against a large database can predict with some degree of accuracy what type of personality a person has and how they are likely to behave in different situations. The predictions are inferred, which means they start with what is known, but move into speculation based on a number of different areas of knowledge including past experience and databases collected and collated over the years. The so-called â€Å"homology assumption† asserts that â€Å"criminals who exhibit similar crime scene actions have similar background characteristics.† (Doan and Snook, 2008, p. 61). In practice this means that investigators in a case of rape, for example, will go on the assumption that there is â€Å"a positive linear relationship between the similarities of the crime scene actions and the corresponding similarities in the background characteristics for a sample of rapists.† Any inferences that are made are deliberately not absolute statements, but are based on li kelihood and similarity: â€Å"It’s certainly possible for some characteristics to be consistent or homologous, and indeed this can be demonstrated in some cases. However, it is not a reasonable assumption in every case or even in most cases.† (Turvey, 2008, p. 540) Additional factors such as drug or alcohol use and mental illness with or without adequate medication can affect the offender’s behaviour in unpredictable ways, causing a depart at times from his or her enduring characteristics. Because of these variables, some of which cannot be known by

Motivation, leadership style and performance management Essay

Motivation, leadership style and performance management - Essay Example This essay is structured in different sections, with each section dealing with one factor of crucial influence on performance. The first section discusses the various theories of motivation including the works of Maslow (1943), Alderfer (1972), McClelland (1955) and evaluates the impact of motivation on the group’s performance. The second section discusses theories of leadership by XYZ, and assesses the impact of leadership style on the performance of our group. The third section of the essay covers performance measurement as the factor that impacts on the team performance. The final section of this essay covers my conclusions and the recommendations that can help in better performance management. The first factor that I intend to relate to performance of team is motivation. Motivation has been one of the most studied and discussed topics relevant to performance. According to one of the oldest and most popular theories of motivation, motivation is the result of drives or needs that human beings have. For example, Maslow’s Theory of Hierarchy of Needs (1943) states that there are several stages of needs, like the basic needs for food, shelter and security; social needs related to feeling a sense of belongingness or affection, status and self-esteem needs, and self-actualization needs. As a person is able to fill his lower order needs, the higher order needs become operant and motivate him. See Figure 1 below: Figure 1: Maslow’s Hierarchy of Needs Theory (Source: Maslow, 1943). Another version of the derive theory is that proposed by Alderfer (1972), which segregates these needs into only three categories – ERG or existence, Relatedness and Growth needs. According to Alderfer (1972), all three types of needs can be operational at the same time. Similarly, a theory of need is proposed by McClelland (1955), which states that people are motivated by different needs and the prominent need defines what factors may motivate them. For example , according to McClelland (1955), people who have a high need for achievement are motivated by challenging tasks and lofty objectives, while people who have a high need for affiliation are motivated by opportunities that furnish them with more social interactions or recognition. Need for power is high in people who are motivated to obtain positions of high status and power. These theories root the basis of motivation into an internal need of the person. In contrast to these theories, theories like that of Vroom (1964), consider the external rewards and expectations as the driving forces for motivation and performance. Vroom’s theory states that people gauge if their efforts are capable of getting them the desired performance, and if the performance outcome can lead them to their goals or rewards. This means that there are basically two aspects to motivation one is the expectations of a link between effort and performance, and the other a direct link between the performance an d rewards. Another essential aspect of motivation according to this theory is the desirability of the reward or the expected value of the reward. People are motivated to expend the effort only if the reward has value for them. As such, motivation according to this theory is a product of: Motivation = Expectancy X Instrumentality X Valence Where, Expectancy is expectation that the effort leads to performance Instrumentality is the perception that the performance will be instrumental in attaining the reward Valence is the value of the reward for the person In addition, motivation can be both extrinsic, as in the case where rewards and incentives are the motivating factors, and intrinsic, where the person wants to fulfil an internal need –