It is quite possible to come up with slightly different
definitions of the big 5 traits and to attach more importance to
some of the facets than to others. This is an area that lends
itself to endless debate and keeps many academic psychologists in
work. As well as providing lively academic argument, it also
enables companies in the personality testing field to
differentiate their products from those of their competitors.
For example, you may come across personality tests like the ‘16
Personality Factor Questionnaire’ or the ‘Occupational Personality
Inventory’ which measures 32 personality traits. These tests do
not measure the big 5 personality traits plus others. They are simply
measuring facets or sub-traits of the big 5 and according them
more or less emphasis, depending on the particular viewpoint of
the test designer.
An example personality profile is shown below.

It is important to remember that low, average, and high scores
on a personality trait questionnaire are neither intrinsically
good nor bad. A particular level on any trait will probably be
neutral or irrelevant for most activities, helpful for
accomplishing some things, and detrimental for accomplishing
others. As with any personality inventory, scores and descriptions
can only approximate your actual personality. Whilst all of this
may be true, in the real world your test results will have a
significant influence on your chances of being employed.
Your personality profile is no use to employers unless they have some way of
knowing how your profile compares to the requirements of
performing well in a particular role. Before the results can be
used to select suitable candidates for a particular job, results
of similar questionnaires must be produced in the population as a
whole and also for those people already working successfully in
the relevant job.
For example, there are some jobs which have become synonymous with extrovert personalities. Sales is one example, it is difficult to imagine a successful sales person who is not naturally extroverted. The qualities associated with this personality trait; friendliness, gregariousness, assertiveness, cheerfulness, and a high activity level are all qualities associated with successful sales people.
For employers to look for these qualities when recruiting sales people makes sense and is exactly what you would expect. However, for almost all jobs, not just sales, employers prefer extroverts over introverts.
The reasons for this are twofold;
1) Even people in highly technical jobs work in teams for much of the time, they need to get on with people and get them to cooperate to get the job done.
2) Most employers take a long term view of the people they employ. The person employed today to input figures into spreadsheets could be working as a supervisor or manager in a couple of year’s time and it is better if they appear to have some of the attributes that will be needed in the future.
Testing for Honesty, Integrity, Stress and Anger
In addition to the Big 5, there are other personality traits that
are of particular interest to employers. People applying for jobs
in retail, banking, or the security services industries are often
asked to take an integrity test which claims to predict if they
will lie, cheat, or steal on the job. These personality tests are administered
by an estimated 6,000 US organizations and taken by as many as 5
million people each year. These tests may be either self-contained
or the questions may form part of a general personality
questionnaire.

Stress is often defined as ‘anger turned inwards’ and is
implicated in a long list of medical conditions from migraines to
heart attacks. It is also a precursor to ‘workplace rage’ which
along with ‘road rage’ and ‘air rage’ is rapidly increasing.
Employee illness and violence are very expensive from an
employer’s point of view and questions aimed at screening out
stressed or angry candidates are finding their way into
personality questionnaires.
Personality Questionnaires and Diversity
The modern workforce is made up of people from a diverse array
of ethnic and cultural groups, including many persons for whom
English is not the primary language. Some of these individuals may
experience difficulty on standardized tests due to cultural
differences or lack of mastery of the English language. Depending
on the nature of the job for which they are applying, this could
mean that their test scores will not accurately predict their true
job potential.
Testing People with Disabilities
These situations must be handled with professionalism and
sensitivity. Properly handled, this can be accomplished without
compromising the integrity of the assessment process.
Accommodation may involve ensuring physical accessibility to the
test site, modifying test equipment or tests, or providing other
forms of assistance. Giving extra time for certain kinds of tests
to test takers with dyslexia or other learning disabilities and
administering a braille version of a test for the blind may be
examples of reasonable accommodation.
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