GRE®
The Graduate Record Examination or GRE is a standardized test that is an admissions requirement for many graduate schools principally in the United States, but also in other English speaking countries. Created and administered by the Educational Testing Service (or ETS), the exam is primarily focused on testing abstract thinking skills in the areas of math, vocabulary, and analytical writing. The GRE is typically a computer-based exam that is administered by select qualified testing centers; however, paper-based exams are offered in areas of the world that lack the technological requirements.
In the graduate school admissions process, the level of emphasis that is placed upon GRE scores varies widely between schools and even departments within schools. The importance of a GRE score can range from being an important selection factor to being a mere admission formality.
Critics of the GRE have argued that the exam format is so rigid that it effectively tests only how well a student can conform to a standardized test taking procedure. ETS responded by announcing plans in 2006 to radically redesign the test structure starting in the fall of 2007; however, the company has since announced, "Plans for launching an entirely new test all at once were dropped, and ETS decided to introduce new question types and improvements gradually over time." The new questions have been gradually introduced since November of 2007.
Structure
The following section refers to the typical computer-based test. The structure of a paper-based test or a test with special accommodations will differ.
The exam consists of three graded sections, plus a required experimental section that is not included in the reported score. The three graded sections are analytical writing, verbal, and quantitative. The analytical writing section will always appear first, while the verbal, quantitative, and experimental sections may appear in any order on the test. An additional non-scored and clearly marked optional research section may also appear at end of the test. The entire test procedure takes about 3 hours.
Analytical writing section
The analytical writing section consists of two different essays, an "issue task" and an "argument task". The writing section is graded on a scale of 0-6, in half-point increments. The essays are written on a computer using a word processing program specifically designed by ETS. The program allows only basic computer functions and does not contain a spell-checker or other advanced features. Each essay is scored by at least two readers on a six-point holistic scale. If the two scores are within one point, the average of the scores is taken. If the two scores differ by more than a point, a third reader examines the response.
Issue task
The test taker will be able to choose between two topics upon which to write an essay. The time allowed for this essay is 45 minutes.
Argument task
The test taker will be given an "argument" and the test taker will be asked to write an essay that explains why one "side" of the argument is superior. Typically, the task requires that the taker identify and critique the logical fallacies of the argument. The time allotted for this essay is 30 minutes.
Verbal section
One graded multiple-choice section is always a verbal section, consisting of analogies, antonyms, sentence completions, and reading comprehension passages. Multiple-choice response sections are graded on a scale of 200-800, in 10-point increments. This section primarily tests vocabulary, and average scores in this section are substantially lower than those in the quantitative section. In a typical examination, this section may consist of 30 questions, and 30 minutes may be allotted to complete the section.
Quantitative section
The quantitative section, the other multiple-choice section, consists of problem solving and quantitative comparison questions that test high school level math. Multiple-choice response sections are graded on a scale of 200-800, in 10-point increments. In a typical examination, this section may consist of 28 questions, and test takers may be given 45 minutes to complete the section.
Experimental section
The experimental section will be either a verbal, quantitative or the essay section, which contains new questions that ETS is considering for future test editions. This section will not count toward the test-taker's score; however, the section will appear identical to either the "actual" verbal or quantitative section and will likewise be a multiple-choice test with the same number of questions and the same time allotment as the "real" verbal or quantitative section. The test taker will have no way of knowing which section is experimental, so the test taker is forced to complete this section.
If the experimental section appears as an analytical writing question (essay), if an "issue" type question is presented, a choice between two topics will not be given. This coupled with the fact that the true analytical writing section is the first test given can help the test-taker to deduce which is the experimental section and the taker can thus lower the importance of that section.
Research Section
An additional research section may appear at the end of the test. Unlike the experimental section, this section will be clearly marked and will be completely optional. The test taker's participation or refusal to participate will not affect the reported score in any way.
Scoring
Computerized adaptive testing
The common (Verbal and Quantitative) multiple-choice portions of the exam currently use Computer-adaptive testing (CAT) methods that automatically change the difficulty of questions as the test taker proceeds with the exam, depending on the number of correct or incorrect answers that are given. The test taker is not allowed to go back and change the answers to previous questions, and some type of answer must be given before the next question is presented.
The first question that is given in a multiple-choice section is considered to be an "average level" questions that half of the GRE test takers will answer correctly. If the question is answered correctly, then subsequent questions become more difficult. If the question is answered incorrectly, then subsequent questions become easier, until a question is answered correctly. This approach to administration yields scores that are of similar accuracy while using approximately half as many items. However, this effect is moderated with the GRE because it has a fixed length; true CATs are variable-length, where the test will stop itself once it has zeroed in on a candidate's ability level.
The actual scoring of the test is done with item response theory (IRT). While CAT is associated with IRT, IRT is actually used to score non-CAT exams. The GRE subject tests, which are administered in the traditional paper-and-pencil format, use the same IRT scoring algorithm. The difference that CAT provides is that items are dynamically selected so that the test taker only sees items of appropriate difficulty. Besides the psychometric benefits, this has the added benefit of not wasting the examinee's time by administering items that are far too hard or easy. This occurs in fixed-form testing.
Comparisons for "Intended Graduate Major" are "limited to those who earned their college degrees up to two years prior to the test date." ETS provides no score data for "non-traditional" students who have been out of school more than two years, although their own report "RR-99-16" indicated that 22% of all test takers in 1996 were over the age of 30.
Use in admissions
Many graduate schools in English-speaking countries (especially in the United States) require GRE test results as part of the admission procedure. The GRE test is a standardized test intended to measure the abilities of all graduates in tasks of general academic nature, regardless of their fields of specialization. The GRE is supposed to measure the extent to which undergraduate education has developed an individual's verbal and quantitative skills in abstract thinking.
Unlike other standardized admissions tests (such as the SAT, LSAT, and MCAT), the use and weight of GRE scores vary considerably not only from school to school, but from department to department, and from program to program too. Programs in liberal arts topics may only consider the applicant's verbal score to be of interest, while math and science programs may only consider quantitative ability; however, since most applicants to math, science, or engineering graduate programs all have high quantitative scores, the verbal score can become a deciding factor even in these programs. Some schools use the GRE in admissions decisions, but not in funding decisions; others use the GRE for the selection of scholarship and fellowship candidates, but not for admissions. In some cases, the GRE may be a general requirement for graduate admissions imposed by the university, while particular departments may not consider the scores at all. Graduate schools will typically provide information about how the GRE is considered in admissions and funding decisions, and the average scores of previously admitted students. The best way to find out how a particular school or program evaluates a GRE score in the admissions process is to contact the person in charge of graduate admissions for the specific program in question (and not the graduate school in general).
Programs that involve significant expository writing require the submission of a prepared writing sample that is considered more useful in determining writing ability than the analytical writing section; however, the writing scores of foreign students are sometimes given more scrutiny and are used as an indicator of overall comfort with and mastery of conversational English.
GRE Subject Tests
In addition to the General Test, there are also eight GRE Subject Tests testing knowledge in the specific areas of Biochemistry, Cell and Molecular Biology, Biology, Chemistry, Computer Science, Literature in English, Mathematics, Physics, and Psychology. In the past, subject tests were also offered in the areas of Economics, Revised Education, Engineering, Geology, History, Music, Political Science, and Sociology. In April 1998, the Revised Education and Political Science exams were discontinued. In April 2000, the History and Sociology exams were discontinued, and the other four were discontinued in April 2001.
Preparation
A variety of resources are available for those wishing to prepare for the GRE. Upon registration, ETS provides preparation software called Power Prep, which contains two practice tests of retired questions, as well as further practice questions and review material. Since the software replicates both the test format and the questions used, it can be useful to predict the actual GRE scores. ETS does not license their past questions to any other company, making them the only source for official retired material. ETS used to publish the "BIG BOOK" which contained a number of actual GRE questions; however, this publishing was abandoned. Several companies provide courses, books and other unofficial preparation materials.
ETS has claimed that content of the GRE is "un-coachable"; however, many test preparation companies claim that the test format is so rigid that familiarizing oneself with the test's organization, timing and the use of process of elimination is the best way to increase a GRE score.
Validity
A meta-analysis of the GRE's validity in predicting graduate school success found a correlation of .3 to .4 between the GRE and both first year and overall graduate GPA. The correlation between GRE score and graduate school completion rates ranged from .11 (for the now defunct analytical section) to .39 (for the GRE subject test).
Currently the GRE Scores are valid for 5 years.
Plans for the revised GRE
In 2006, ETS announced plans to enact significant changes in the format of the GRE. Planned changes for the revised GRE included a longer testing time, a departure from computer-adaptive testing, a new grading scale, and an enhanced focus on reasoning skills and critical thinking for both the quantitative and qualitative sections.
On April 2, 2007, ETS announced the decision to cancel plans for revising the GRE.The announcement cited concerns over the ability to provide clear and equal access to the new test after the planned change as an explanation for the cancellation. They did state, however, that they do plan "to implement many of the planned test content improvements in the future", although exact details regarding those changes have not yet been announced.
On January 2008, the Reading Comprehension within the verbal sections has been reformatted, passages's "line numbers will be replaced with highlighting when necessary in order to focus the test taker on specific information in the passage" to "help students more easily find the pertinent information in reading passages.
GRE prior to October 2002
Prior to October 2002, the GRE had a separate Analytical Ability section which tested candidates on logical and analytical reasoning abilities. This section has now been replaced by the Analytical Writing portion.
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