Table of Contents
Becoming an Expert
Expertise is commitment coupled with creativity.Specifically,it is the commitment of time,energy,and resources to a relatively narrow field of study and the creative energy necessary to generate new knowledge in that field.It takes a considerable amount of time and regular exposure to a large number of cases to become an expert.
A An individual enters a field of study as a novice.The novice needs to learn the guiding principles and rules of a given task in order to perform that task. Concurrently, the novice needs to be exposed to specific cases, or instances, that test the boundaries of such heuristics. Generally, a novice will find a mentor to guide her through the process.A fairly simple example would be someone learning to play chess. The novice chess player seeks a mentor to tench her the object of the game, the number of spaces, the names of the pieces, the function of each piece, how each piece is moved, and the necessary conditions for winning or losing the game.
B In time, and with much practice, the novice begins to recognize patterns of behavior within cases and, thus, becomes a journeyman. With more practice and exposure to increasingly complex cases, the journeyman finds patterns not only within cases but also between cases. More importantly, the journeyman learns that these patterns often repent themselves over time. The journeyman still maintains regular contact with a mentor to solve specific problems and learn more complex strategies. Returning to the example of the chess player, the individual begins to learn patterns of opening moves, offensive and defensive game-playing strategies, and patterns of victory and defeat.
C When a journeyman starts to make and test hypotheses about future behavior bused on past experiences, she begins the next transition. Once she creatively generates knowledge, rather than simply matching superficial patterns, she becomes an expert. At this point, she is confident in her knowledge and no longer needs a mentor as n guide-she becomes responsible for her own knowledge. In the chess example, once a journeyman begins competing against experts, makes predictions based on patterns, and tests those predictions against actual behavior, she is generating new knowledge and a deeper understanding of the game. She is creating her own cases rather than relying on the cases of others.
D The chess example is a rather short description of an apprenticeship model. Apprenticeship may seem like a restrictive 18th century mode of education, but it is still a standard method of training for many complex tasks. Academic doctoral programs are based on an apprenticeship model, as are fields like law, music, engineering, and medicine. Graduate students enter fields of study, find mentors, and begin the long process of becoming independent experts and generating new knowledge in their respective domains.
E Psychologists and cognitive scientists agree that the time it takes to become an expert depends on the complexity of the task and the number of cases, or patterns, to which an individual is exposed. The more complex the task,the longer it takes to build expertise, or, more accurately, the longer it takes to experience and store a large number of cases or patterns.
The Power of Expertise
F An expert perceives meaningful patterns in her domain better than non-experts. Where a novice perceives random or disconnected data points, an expert connects regular patterns within and between cases. This ability to identify patterns is not an innate perceptual skill; rather it reflects the organization of knowledge after exposure to and experience with thousands of cases. Experts have a deeper understanding of their domains than novices do, and utilize higher-order principles to solve problems. A novice, for example, might group objects together by color or size, whereas an expert would group the same objects according to their function or utility. Experts comprehend the meaning of data and weigh variables with different criteria within their domains better than novices. Experts recognize variables that have the largest influence on a particular problem and focus their attention on those variables.
G Experts have better domain-specific short-term and long-term memory than novices do. Moreover, experts perform tasks in their domains faster than novices and commit fewer errors while problem solving. Interestingly, experts go about solving problems differently than novices. Experts spend more time thinking about a problem to fully understand it at the beginning of a task than do novices, who immediately seek to find a solution. Experts use their knowledge of previous cases as.context for creating mental models to solve given problems. H Better at self-monitoring than novices, experts are more aware of instances where they hove committed errors or failed to understand a problem. Experts check their solutions more often than novices and recognize when they are missing information necessary for solving a problem. Experts are aware of the limits of their domain knowledge and apply their domains heuristics to solve problems that fall outside of their experience base.
The Paradox of Expertise
I The strengths of expertise can also be weaknesses. Although one would expect experts to be good forecasters，they are not particularly good at making predictions about the future. Since the 1930s, researchers have been testing the ability of experts to make forecasts. The performance of experts has been tested against actuarial tables to determine if they are better at making predictions than simple statistical models. Seventy years later, with more than two hundred experiments in different domains, it is clear that_the answer is no. If supplied with an equal amount of data about a particular case, an actuarial table is as good, or better than an expert at making calls about the future. Even if an expert is given more specif is case information than is available to the statistical model, the expert does not tend to outperform the actuarial table.
J Theorists and researchers differ when trying to explain why experts are less accurate forecasters than statistical models. Some have argued that experts, like all humans, are inconsistent when using mental models to make predictions. A number of researchers point to human biases to explain unreliable expert predictions. During the last 30 years, researchers have categorized, experimented, and theorized about the cognitive aspects of forecasting. Despite such efforts, the literature shows little consensus regarding the causes or manifestations of human bias.
Questions 1-5 Complete the flow char
Choose NO MORE THAN THREE WORDS from the passage each answer
Write your answers in boxes 1-5 on your answer sheet.
From a novice to an expert
Novice: need to study 1 ………………… under the guidance of a 2 ………………… 3 ………………… start to identify 4 ………………… for cases within or between study more 5 ………………… ways of doing things create new knowledge
Expert: perform task independently
Questions 6-10 Do the following statements agree with the information given in Reading Passage 1?
In boxes 6-10 on your answer sheet, write
TRUE if the statement agrees with the information
FALSE if the statement contradicts the information
NOT GIVEN if there is no information on this
6 Novices and experts use the same system of knowledge to comprehend and classify objects.
7 The focus of novices’ training is necessarily on long term memory.
8 When working out the problems, novices want to solve them straightaway.
9 When handling problems, experts are always more efficient than novices in their fields.
10 Expert tend to review more than novices on cases when flaws or limit on understanding took place.
Questions 11-13 Complete the following summary of the paragraphs of Reading Passage 1, using NO MORE THAN TWO WORDS from the Reading Passage for each answer.
Write your answers in boxes 11-13 on your answer sheet
While experts outperform novices and machines in pattern recognition and problem solving, expert predictions of future behavior or events are seldom as accurate as simple actuarial tables. Why? Some have tried to explain that experts differ when using cognitive 11 ………………… to forecast. Researchers believe it is due to 12 ………………… However attempting endeavour of finding answers did not yet produce 13 …………………