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Exam Code: MCAT
Exam Questions: 815
Medical College Admission Test: Verbal Reasoning, Biological Sciences, Physical Sciences, Writing Sample
Updated: 21 Aug, 2025
Question 1

In the course of gathering data in an experiment, a researcher develops the following correlation matrix:
MCAT-part-3-page300-image1
Table 1 Correlation Matrix
Which of the following pairs of variables are most strongly correlated?

Section: Psychology and Sociology 

Options :
Answer: B

Question 2

The time has come to acknowledge the ascendancy of the humanistic psychology movement. The so-called
“Third Stream” emerged at mid-century, asserting itself against the opposition of a pair of mighty, longestablished currents, psychoanalysis and behaviorism. The hostility between these two older schools, as well
as divisiveness within each of them, probably helped enable humanistic psychology to survive its early years.
But the movement flourished because of its wealth of insights into the nature of this most inexact science.
Of the three major movements in the course of 20th century psychology, psychoanalysis is the oldest and most
introspective. Conceived by Sigmund Freud as a means of treating mental and emotional disorders,
psychoanalysis is based on the theory that people experience unresolved emotional conflicts in infancy and
early childhood. Years later, although these experiences have largely disappeared from conscious awareness,
they may continue to impair a person’s ability to function in daily life. The patient experiences improvement
when the psychoanalyst eventually unlocks these long-repressed memories of conflict and brings them to the
patient’s conscious awareness.
In the heyday of behaviorism, which occurred between the two world wars, the psychoanalytic movement was
heavily criticized for being too concerned with inner subjective experience. Behavioral psychologists, dismissing
ideas and feelings as unscientific, tried to deal only with observable and quantifiable facts. They perceived the
human being merely as an organism which generated responses to stimuli produced by its body and the
environment around it. Patients’ neuroses no longer needed analysis; they could instead by modified by
behavioral conditioning. Not even babies were safe: B.F. Skinner devised a container in which infants could be
raised under “ideal” conditions – if a sound-proof box can be considered the ideal environment for child-rearing.
By mid-century, a number of psychologists had grown dissatisfied with both the deterministic Freudian
perspective and the mechanistic approach of behaviorism. They questioned the idea that human personality
becomes permanently fixed in the first few years of life. They wondered if the purpose of psychology was really
to reduce people to laboratory specimens. Was it not instead possible that human beings are greater than the
sum of their parts? That psychology should speak to their search for fulfillment and meaning in life?
It is questions like these that members of the Third Stream have sought to address. While the movement
cannot be simplified down to a single theoretical position, it does spring from certain fundamental propositions.
Humanistic psychologists believe that conscious experience, rather than outward behavior, is the proper
subject of psychology. We recognize that each human being is unique, capable of change and personal growth.
We see maturity as a process dependent on the establishment of a set of values and the development of self.
And we believe that the more aspects of self which are satisfactorily developed, the more positive the
individual’s self-image.
Abraham Maslow, a pioneer of the Third Stream, articulated a hierarchy of basic human needs, starting with
food, water and air, progressing upward through shelter and security, social acceptance and belonging, to love,
esteem and self-expression. Progress toward the higher stages cannot occur until all of the more basic needs
have been satisfied. Individuals atop the pyramid, having developed their potential to the highest possible
extent, are said to be “self-actualized”.
If this humanist theoretical perspective is aimed at empowering the individual, so too are the movement’s
efforts in the practical realm of clinical psychology. Believing that traditional psychotherapists tend to lead
patients toward predetermined resolutions of their problems, Carl Rogers pressed for objective evaluations of
both the process and outcome of psychotherapeutic treatment. Not content to function simply as a reformer,
Rogers also pioneered the development of “client-centered” or nondirective therapy, which emphasizes the
autonomy of the client (i.e., patient). In client-centered therapy, clients choose the subjects for discussion, and
are encouraged to create their own solutions to their problems.
According to the passage, the ultimate goal of Carl Rogers’s client-centered therapy is:

Section: Verbal Reasoning

Options :
Answer: B

Question 3

…Until last year many people – but not most economists – thought that the economic data told a simple tale.
On one side, productivity – the average output of an average worker – was rising. And although the rate of
productivity increase was very slow during the 1970’s and early 1980’s, the official numbers said that it had
accelerated significantly in the 1990’s. By 1994 an average worker was producing about 20 percent more than
his or her counterpart in 1978.
On the other hand, other statistics said that real, inflation- adjusted wages had not been rising at anything like
the same rate. In fact, some of the most commonly cited numbers showed real wages actually falling over the
last 25 years. Those who did their homework knew that the gloomiest numbers overstated the case…Still, even
the most optimistic measure, the total hourly compensation of the average worker, rose only 3 percent between
1978 and 1994…
…But now the experts are telling us that the whole thing may have been a figment of our statistical
imaginations… a blue-ribbon panel of economists headed by Michael Boskin of Stanford declared that the
Consumer Price Index [C.P.I.] had been systematically overstating inflation, probably by more than 1 percent
per year for the last two decades, mainly failing to take account of changes in the patterns of consumption and
improvements in product quality…
…The Boskin report, in particular, is not an official document – it will be quite a while before the Government
actually issues a revised C.P.I., and the eventual revision may be smaller than Boskin and his colleagues
propose. Still, the general outline of the resolution is pretty clear. When all the revisions are taken into account,
productivity growth will probably look somewhat higher than it did before, because some of the revisions being
proposed to the way we measure consumer prices will also affect the way we calculate growth. But the rate of
growth of real wages will look much higher – and so it will now be roughly in line with productivity, which will
therefore reconcile numbers on productivity and wages with data that show a roughly unchanged distribution of
income between capital and labor. In other words, the whole story about workers not sharing in productivity
gains will turn out to have been based on a statistical illusion.
It is important not to go overboard on this point. There are real problems in America, and our previous concerns
were by no means pure hypochondria. For one thing, it remains true that the rate of economic progress over
the past 25 years has been much slower than it was in the previous 25. Even if Boskin’s numbers are right, the
income of the median family – which officially has experienced virtually no gain since 1973 – has risen by only
about 35 percent over the past 25 years, compared with 100 percent over the previous 25. Furthermore, it is
quite likely that if we “Boskinized” the old data – that is, if we tried to adjust the C.P.I. for the 50’s and 60’s to
take account of changing consumption patterns and rising product quality – we would find that official numbers
understated the rate of progress just as much if not more than they did in recent decades…
…Moreover, while workers as a group have shared fully in national productivity gains, they have not done so
equally. The overwhelming evidence of a huge increase in income inequality in America has nothing to do with
price indexes and is therefore unaffected by recent statistical revelations. It is still true that families in the
bottom fifth, who had 5.4 percent of total income in 1970, had only 4.2 percent in 1994; and that over the same
period the share of the top 5 percent went from 15.6 to 20.1. And it is still true that corporate C.E.O.’s, who
used to make about 35 times as much as their employees, now make 120 times as much or more…
…While these are real and serious problems, however, one thing is now clear: the truth about what is
happening in America is more subtle than the simplistic morality play about greedy capitalists and oppressed
workers that so many would-be sophisticates accepted only a few months ago. There was little excuse for
buying into that simplistic view then; there is no excuse now…
According to the passage, “Boskinization” adjusts the C.P.I. by:

Section: Verbal Reasoning

Options :
Answer: C

Question 4

When electric current passes through an aqueous solution, which of the following ionic migrations is correct?

Section: Physical Sciences 

Options :
Answer: B

Question 5

Agonistic behavior, or aggression, is exhibited by most of the more than three million species of animals on this
planet. Animal behaviorists still disagree on a comprehensive definition of the term, but aggressive behavior
can be loosely described as any action that harms an adversary or compels it to retreat. Aggression may serve
many purposes, such as food gathering, establishing territory, and enforcing social hierarchy. In a general
Darwinian sense, however, the purpose of aggressive behavior is to increase the individual animal’s – and thus,
the species’ – chance of survival.
Aggressive behavior may be directed at animals of other species, or it may be conspecific – that is, directed at
members of an animal’s own species. One of the most common examples of conspecific aggression occurs in
the establishment and maintenance of social hierarchies. In a hierarchy, social dominance is usually
established according to physical superiority; the classic example is that of a pecking order among domestic
fowl. The dominance hierarchy may be viewed as a means of social control that reduces the incidence of attack
within a group. Once established, the hierarchy is rarely threatened by disputes because the inferior animal
immediately submits when confronted by a superior.
Two basic types of aggressive behavior are common to most species: attack and defensive threat. Each type
involves a particular pattern of physiological and behavioral responses, which tends not to vary regardless of
the stimulus that provokes it. For example, the pattern of attack behavior in cats involves a series of
movements, such as stalking, biting, seizing with the forepaws and scratching with the hind legs, that changes
very little regardless of the stimulus – that is, regardless of who or what the cat is attacking.
The cat’s defensive threat response offers another set of closely linked physiological and behavioral patterns.
The cardiovascular system begins to pump blood at a faster rate, in preparation for sudden physical activity.
The eyes narrow and the ears flatten against the side of the cat’s head for protection, and other vulnerable
areas of the body such as the stomach and throat are similarly contracted. Growling or hissing noises and erect
fur also signal defensive threat. As with the attack response, this pattern of responses is generated with little
variation regardless of the nature of the stimulus.
Are these aggressive patterns of attack and defensive threat innate, genetically programmed, or are they
learned? The answer seems to be a combination of both. A mouse is helpless at birth, but by its 12th day of life
can assume a defensive threat position by backing up on its hind legs. By the time it is one month old, the
mouse begins to exhibit the attack response. Nonetheless, copious evidence suggests that animals learn and
practice aggressive behavior; one need look no further than the sight of a kitten playing with a ball of string. All
the elements of attack – stalking, pouncing, biting and shaking – are part of the game which prepares the kitten
for more serious situations later in life.
The author suggests that the question of whether agonistic behavior is genetically programmed or learned:

Section: Verbal Reasoning 

Options :
Answer: D

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