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the first written assignment, I was asked to take two different personality
tests: which were the Big Five Personality Test, and the 16 Personalities Test.
Both tests shared some similarities on response format, but their questionnaire
format was quite different from each other. First, both tests used statement-based
personality as a questionnaire format. In this format, I received a list of
statements, and they asked me to choose which of these options are applicable
to them. Such statement as do you find it easy to stay relaxed when there is
some pressure. They then asked me to state if you agree or disagree on a scale
of 1 to 7 and 1 to 6.

the 16 Personalities Test, it asked me to answer 100 statements. These
statements tended to be somewhat longer, and some statements required me to look
back on my past behaviors. Also, some statements were a bit ambiguous, such as
I try to respond to my email as soon as possible. It really depends on my mood,
and I didn’t have a concrete answer for that. I would say some questions were
quite confusing, and I have no confidence if I answered them right.

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comparison to that, The Big Five Personality Test had a different questionnaire
format. On the first and second page, it asked me to rate each statement
according to how does it describe myself. The statements given on the first two
pages were way simpler and much shorter than a statement given by the 16 Personalities
Test. Such as I do make friends easily, and it was easy to answer. Then, on the
last page, it gave me a list of word, and asked me to rate each word according
to how well it described myself. To me, it was easier for me to rate statements
than to rate words, because I
haven’t described myself with a single word for a while. So, it was quite
challenging for me to rate a word, but other than that, it had less questions
to answer and I didn’t experience any difficulty answering them. 

In the 16 Personalities Test, I was diagnosed with logistician personality. According
to the test, I am 86% introverted, 68% observant, 70% thinking, 58% judging,
and 74% assertive. First, I got highest score in introverted, and those introverted
individuals enjoy having time for themselves, and I perform best in individual
work. Also, I tend to be quite sensitive to external environment, and easily
get exhausted by social interaction. Then, I got a moderate score in
observant, and those observant individuals are highly practical. I tend to have
strong habits and focus on what is happening or has already happened in the reality
and focus on facts / practical matters. Also, I perform well when I focus on
just one thing at time instead of having multiple activities. And then, I
scored high score in thinking, and those thinking individuals prelatize logic
over emotion. I prefer not to share the feeling in my mind with other people and
tend to make a wall to the outside world. Also, I do have a will to help
others, but less likely to give to charity, because I believe it is not the
best way to help others out. Moreover, I got a moderate score on judging, and
those judging individuals prefer to plan everything and always follow them before
making an action.  I never move with my
instinct and leave everything to chance. In addition to that, I tend to have
strong responsibility, and strict to social rules. Finally, I scored high in
assertive. Those assertive individuals tend to be confident, and somewhat
resistant to stress. I refuse to worry too much and unlikely to think back about
past actions or mistakes. Also, I tend to be confident when I face a challenging
situation and am satisfied with my life most of the time.

the Big Five Personality Test, I was diagnosed higher than average in Openness
(67%), Conscientiousness (71%), and Neuroticism (65%). On the other hand, I was
lower in Extraversion (15%), and Agreeableness (46%). According to the test, I
got moderate score on openness. The test says that, I am a person who is
neither creative nor eccentric. Plus,
my range of interest in neither particularly wide nor narrow, but a bit wider
than the average person. Then, I got a moderate score on Neuroticism,
and what the test say is, I often
experience negative emotions, and my ability to deal with fear is low,
but a bit higher than average person. Also, I am not an overly reactive person,
and I feel the same stress level as average people do. And then, I got a higher
score on Conscientiousness, and what the test says is that, I am more likely to
be successful in my life and am resistant to any kinds of addictions. Also, my
ability to control myself is higher than average people and tend to have organized
home or work place. Moreover, I got the lowest score on Extraversion, and what
the test says is that, I am relatively independent person. I don’t need attention
from others to feel satisfaction, and I prioritize my own time rather than
spend time with others. Finally, I got a lower score on Agreeableness, and what
the test says is that I always take care of myself before I care for others. I
do not sacrifice myself to help others, and sometimes I think other people are an
enemy that invades my own world.

I agree with most of the results of these personality test, but some of the
results were quite different from what I had in my mind. For example, I
recognize myself as relatively independent, and prefer making my own time. I
believe these characteristics were accurately described in both personality
tests, and I can fully agree with these descriptions given. However, some
characteristics, such as I am resistant to stress, is not my self-recognized personality
and I believe these tests failed to describe some of my personalities. To say,
the results from these tests were quite accurate in some points, but some parts
were not accurate enough.

design: Overall, I think the 16 Personalities Test was somewhat more valid than
the Big Five Personality Test. First, the 16 Personalities test had higher
convergent validity than the big five personality test. Also, the test collects
data by measuring convergent validity. This validity demonstrates whether a
test correlates with other measures that correlate with it (Larsen). To measure correlation
of the personalities, the 16 personalities test asked the participant to answer
100 statements on a scale of 1 to 7. In the test, there were multiple statements
that asked the participant similar questions but are written in different
sentence structures. For
example, the test used these two statements: Being organized is more important
to you than being adaptable, and your home / work environments are quite tidy.
These statements
measure the participant’s trait that demonstrates
how they make decisions and cope with emotions. So, if the
participants rated these statements on about the same scale, they are
positively correlated to each other, and shows that they are more likely to be a
thinking individual rather than a feeling individual. Who tends to be organized
and prefers to plan before making an action. Since the test contains multiple
statements with similar interests, it enables to collect more samples. These
samples help to measure a correlation coefficient more accurately and enable researchers
to find out what kind of traits the participant have.

 In addition to that, 16 Personalities Test
have higher discriminant validity as well, and makes the test more valid than Big
Five Personality test. The discriminant validity can demonstrate which trait
does not correlate with the participant’s personality and helps researchers to wipe
out inapplicable choices (Larsen).
the 16 Personalities Test enables the collection of multiple data points at
once, it can narrow down some choices by eliminating the inapplicable
personalities and traits. On the other hand, the Big Five Personality Test has
relatively few questions, and has a smaller sample to correlate the data. Which
can create the chance to have an error in calculation of the correlation
coefficient, and the result of the data may lack accuracy. Because of these
reasons, the 16 Personalities Test is more valid and reliable than Big Five Personality

assess the reliability of the personality test, you must first assess the internal
reliability and test-retest reliability to see if the result of the test is
trustworthy. If you want to assess the internal reliability, you must examine
the relationships among the test itself at a single point in time (Larsen). To do this, you can
split the test in half and see if both parts of the test provide similar or
dissimilar results. Then, you calculate the correlation coefficient to measure
the strength of the relationship (Nath). If both parts of the test provide related
results and are well correlated, the scale of internal reliability is high. In
contrast to that, if it does not correlate well, the scale of the reliability
is low. If you want to assess the test-retest reliability of these personality
test, you must give participants the same test
twice at regular intervals to see if the scores are similar or different. Then,
you must calculate the correlation coefficient to measure the strength of the
relationship. If the scores of the first and second attempts are highly
correlated, you can conclude that the resulting measure have high test-retest
reliability. In contrast, if the scores of two tests are not correlated enough,
it you conclude it have low test-retest reliability.

To sum
up, 16 Personalities test took longer time to answer 100 statements, and some
of the statements were a bit struggle to answer. On the other hand, the
statements given by the Big Five Personality Test were quite simple and
relatively easier to answer. However, in the regard of validity, 16 Personalities
test exceeded the other. The convergent and discriminant validity are the
factor that supports the accuracy of the test. These are the factor that the Big 

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