Medical College Admission Test
The Medical College Admission Test (MCAT) is a computer-based standardized examination for prospective medical students in the United States and Canada. It is designed to assess problem solving, critical thinking, written analysis and knowledge of scientific concepts and principles. Prior to August 19, 2006, the exam was a paper-and-pencil test; since January 27, 2007, however, all administrations of the exam have been computer-based.
The exam is offered 25 or more times per year at Prometric centers. The number of administrations may vary each year. Most people who take the MCAT are undergraduates in college in their Junior or Senior year of college before they apply to medical school. Ever since the exam's duration was shortened to 4.5–5 hours, the test may be offered either in the morning or in the afternoon. Some test dates have both morning and afternoon administrations.
The test consists of four sections, listed in the order in which they are administered on the day of the exam:
- Physical Sciences (PS)
- Verbal Reasoning (VR)
- Biological Sciences (BS)
- Trial Section (optional)
The Verbal Reasoning, Physical Sciences, and Biological Sciences sections are in multiple-choice format. The passages and questions are predetermined, and thus do not change in difficulty depending on the performance of the test taker (unlike, for example, the Graduate Record Examination).
The Physical Sciences section assesses problem-solving ability in general chemistry and physics and the Biological Sciences section evaluates these abilities in the areas of biology and organic chemistry. The Verbal Reasoning section evaluates the ability to understand, evaluate, and apply information and arguments presented in prose style. The Biological Sciences section most directly correlates to success on the USMLE Step 1 exam, with a correlation coefficient of .553 vs .491 for Physical Sciences and .397 for Verbal Reasoning. Predictably, MCAT composite scores also correlate with USMLE Step 1 success.
|Trial Section (optional)||32||45|
The Physical Sciences section is administered first (prior to the April 2003 MCAT, Verbal Reasoning was the first section of the exam). It is composed of 52 multiple-choice questions related to general chemistry and physics. The majority of the multiple-choice questions are divided into passage sets. Passage-based questions are implemented to evaluate "text comprehension, data analysis, ability to evaluate an argument, or apply knowledge from the passage to other contexts." Examinees are allotted 70 minutes to complete this section of the exam.
The Verbal Reasoning section follows the Physical Sciences section and an optional 10 minute break. Exam takers have 60 minutes to answer 40 multiple-choice questions evaluating their comprehension, evaluation, and application of information gathered from written passages. Unlike the Physical and Biological Sciences sections, the Verbal Reasoning section is not supposed to require specific content knowledge in order to perform well.
After Verbal Reasoning, there is an optional 10 minute break followed by the Biological Sciences section. Examinees have 70 minutes to answer 52 multiple-choice questions related to organic chemistry and biology.
Beginning in 2013, the Writing Sample was removed in order to make room for a new Trial Section that will test examinees in either: biochemistry, biology, chemistry, and physics or in psychology, sociology, and biology. The new Trial Section is optional and will only be in effect from 2013 to 2014. The Trial Section is not scored and is not be a part of the exam taker's composite score. Exam takers have a total of 45 minutes to answer 32 multiple-choice questions and it is only an option to examinees who choose not to void their exam after the Biological Sciences section.
Scores for the three multiple-choice sections range from 1 to 15. Scores for the writing section range alphabetically from J (lowest) to T (highest). The writing section is graded by a human reader and a computerized scoring system. Each essay is scored twice - once by the human reader and once by the computer - and the total writing sample score is the sum of the four individual scores. The total raw score is then converted to an alphabetic scale ranging from J (the lowest) to T (the highest).
The numerical scores from each multiple-choice section are added together to give a composite score. The score from the writing sample may also be appended to the composite score (e.g. 35S). The maximum composite score is 45T. According to the AAMC, the average 2008 MCAT score for U.S. medical school applicants was 28.1P, while for matriculants it was 30.9P. There is no penalty for incorrect multiple choice answers (which is not the case in many other standardized tests). Thus, guessing is preferable to leaving an answer choice blank. Students preparing for the exam are encouraged to try to balance their subscores; physical, verbal, and biological scores of 12, 13, and 11 respectively may be looked upon more favorably than 14, 13, and 9, even though both combinations yield the same composite score.
2010 percentiles 
The average scaled score in 2010 was 25.0 with a standard deviation of 6.4. The chart below lists the scaled scores along with their percentiles for 82,004 test takers in 2010:
|Scaled Score (45–31)||Percentile||Scaled Score (30–16)||Percentile||Scaled Score (15–3)||Percentile|
The Moss Test: 1928–46 
In the 1920s, dropout rates in US medical schools soared from 5% to 50%, leading to the development of a test that would measure readiness for medical school. Physician F.A. Moss and his colleagues developed the "Scholastic Aptitude Test for Medical Students" consisting of true-false and multiple choice questions divided into 6-8 subtests. Topics tested included visual memory, memory for content, scientific vocabulary, scientific definitions, understanding of printed material, premedical information, and logical reasoning. The score scale varied from different test forms. Though it had been criticized at the time for testing only memorization ability and thus only readiness for the first two years of medical school, later scholars denied this. In addition to stricter medical school admission procedures and higher educational standards, the national dropout rate among freshman medical students decreased from 20% in 1925-1930 to 7% in 1946.
A simpler test: 1946–62 
Advancements in test measurement technology, including machine scoring of tests, and changed views regarding test scores and medical school readiness reflected the evolution of the test in this period. The test underwent three major changes. It now had only four sub tests, including verbal ability, quantitative ability, science achievement, and understanding modern society. Questions were all in multiple-choice format. Each subtest was given a single score, and the total score was derived from the sum of the scores from the subtests. The total score ranged from 200–800. The individual scores helped medical school admission committees to differentiate the individual abilities among their candidates. Admission committees, however, did not consider the "understanding modern society" section to be of great importance, even though it was created to reward those with broad liberal arts skills, which included knowledge of history, government, economics, and sociology. Committees placed greater emphasis on scores on the scientific achievement section as it was a better prediction of performance in medical school.
From 1946 to 1948, the test was called the "Professional School Aptitude Test" before finally changing its name to the "Medical College Admission Test" when the developer of the test, the Graduate Record Office (under contract with the AAMC) merged with the newly formed Educational Testing Service (ETS). In 1960, the AAMC transferred its contract over to The Psychological Corporation, which was then in charge of maintaining and developing the test.
Status quo: 1962–77 
From 1962 to 1977, the MCAT retained much of its previous format, though the "understanding modern society" section was renamed as "general information" due to its expanded content. Handbooks at the time criticized the test as only a measure of intellectual achievement and not of personal characteristics expected of physicians. Responding to this criticism, admission committees took different approaches in measuring personal characteristics among their applicants.
Phase Four: 1977–91 
During phase four, the MCAT underwent several changes. The "general information" section was eliminated and a broader range of knowledge was tested. At this point, topics tested included scientific knowledge, science problems, reading skills analysis, and quantitative skills analysis. Individual scores were reported for biology, chemistry, and physics rather than a composite science score, thus six different scores for the whole test were reported. The score scale changed to 1–15 as opposed to 200–800 from previous versions of the test. Cultural and social bias was minimized. Though the AAMC claimed the new version intended to evaluate "information gathering and analysis, discerning and formulating relationships, and other problem-solving skills," no research supported this claim.
New changes: 1992–2013 
In 1992 the test changed again, and assumed its current form. Though the test was still divided into four subtests, they were renamed as the verbal reasoning, biological sciences, physical sciences, and writing sample sections. Questions retained the multiple-choice format, though the majority of the questions are divided into passage sets. Passage-based questions were implemented to evaluate "text comprehension, data analysis, ability to evaluate an argument, or apply knowledge from the passage to other contexts." A new scoring scale was also implemented. The total composite score, which ranges from 3–45, is based on the individual scores of the verbal reasoning, biological sciences, and physical sciences, which each have a score range of 1–15. The writing sample, which consists of two essays to be written within 30 minutes for each, is graded on a letter scale from J-T with T being the highest attainable score.
On July 18, 2005, the AAMC announced that it would offer the paper-and-pencil version of the MCAT only through August 2006. A subset of testing sites offered a computer-based version of the full-length exam throughout 2005 and 2006. The present, shorter, computer-based version of the test debuted in January 2007. The exam is now offered numerous times annually, and scored more quickly.
MR5 and the upcoming 2015 test 
The MR5 advisory committee was appointed by AAMC in fall 2008. Highlights of the MR5 process were surveys of what undergraduate institutions teach and surveys of medical school faculty in which they ranked undergraduate subjects for importance in medical school curricula of the future. Late in 2011, the MR5 recommendations were formalized as core competencies that will be tested in 2015. MR5 recommendations were enacted by the AAMC in 2012. The largest changes will consist of testing in biochemistry, multicultural/behavioral concepts, and critical analysis/reasoning from the humanities. Because college freshmen, entering in fall 2012, will be taking a new MCAT, undergraduate premedical advisers are now studying the MR5 documents to translate core competencies to be tested into premedical course recommendations at their campuses. The MR5 MCAT revision has the potential to lead to changes in mathematics, physics, psychology, sociology, and general education recommendations in addition to changes in biology, chemistry and biochemistry. One scientific society to weigh in on the new MCAT vis a vis the undergraduate curriculum is the American Society for Biochemistry and Molecular Biology. Though ASBMB noted that the premedical curriculum in mathematics, physics, social sciences and the humanities is likely to change, the society confined its recommendations to coursework in biology, chemistry and biochemistry.
Like some other professional exams (e.g. the Graduate Management Admission Test (GMAT) or the Law School Admissions Test (LSAT)), the MCAT may be voided on the day of the exam if the exam taker is not satisfied with his or her performance. It can be voided at any time during the exam, or during a five-minute window that begins immediately after the end of the last section. The decision to void can only be based on the test taker's self-assessment, as no scoring information is available at the time—it takes 30–35 days for scores to be returned.
The AAMC prohibits the use of calculators, timers, or other electronic devices during the exam. Cellular phones are also strictly prohibited from testing rooms and individuals found to possess them are noted by name in a security report submitted to the AAMC. The only item that may be brought into the testing room is the candidate's photo ID. If a jacket or sweater is worn, it may not be removed in the testing room.
It is no longer a rule that students must receive permission from the AAMC if they wish to take the MCAT more than three times in total. The limit with the computerized MCAT is three times per year, with no lifetime limit. An examinee can register for only one test date at a time, and must wait two days after testing before registering for a new test date.
Scaled MCAT exam results are made available to examinees approximately thirty days after the test via the AAMC's MCAT Testing History (THx) Web application. Examinees do not receive a copy of their scores in the mail. Nor are examinees given their raw scores. MCAT THx is also used to transmit scores to medical schools, application services and other organizations (at no cost).
Like most standardized tests, there are a variety of preparatory materials and courses available. The AAMC itself also offers a select few tests for purchase at their website and one free sample test on their main website.
Some students taking the MCAT use a test preparation company. Students who do not use these courses often rely on material from university text books, MCAT preparation books, sample tests, and free web resources. Taking undergraduate courses like physics, general chemistry, biology, organic chemistry, and English can help in preparation for MCAT.
See also 
- "2007 Completely Computerized MCAT Exam". Association of American Medical Colleges.
- "Undergraduate Institutional MCAT Scores as Predictors of USMLE Step 1 Performance". Acad Medicine. 2002.
- "Adult Learners: Relationships of Reading, MCAT, and USMLE Step 1 Test Results for Medical Students". Education Resources Information Center. April 2002.
- "MCAT Writing Sample and Other Writing Assessments". Association of American Medical Colleges.
- "Facts: Applicants, Matriculants and Graduates". Association of American Medical Colleges.
- "MCAT Scores and GPAs for Applicants and Matriculants, 1994-2005". AAMC. Archived from the original on 2007-04-05. Retrieved 2007-05-26.
- McGaghie, William C. (2002-09-04). "Assessing Readiness for Medical Education". Journal of the American Medical Association 288 (9): 1085–1090. doi:10.1001/jama.288.9.1085. PMID 12204076.
- Medical College Admission Test Will Convert to Computer-Based Format
- What is changing on the MCAT?
- AAMC MCAT MR Initiative
- 2015 MCAT Preview
- Response to the new MCAT: ASBMB premedical curriculum recommendations
- "MCAT Exam Frequently Asked Questions". Association of American Medical Colleges.
- "Testing Center Regulations and Procedures". Association of American Medical Colleges.
Further reading 
- Julian, E (2005). "Validity of the Medical College Admission Test for predicting medical school performance". Academic Medicine 80 (10): 910–7. doi:10.1097/00001888-200510000-00010. PMID 16186610.
- Simonton, W. Kyle (2006). "Accommodations for the Disabled During Administration of the MCAT, Individual State Interests Versus National Uniformity". Journal of Legal Medicine 27 (3): 305–322. doi:10.1080/01947640600870890. PMID 16959654.
- Association of American Medical Colleges
- AAMC: Medical College Admission Test (MCAT) Web Site
- AAMC: MCAT Student Manual