1. After taking the practice test on your website, a candidate took
the actual Connector Ability test. The score on the practice test
differs a lot from the score on the Connector Abilit y. How is that
possible? How to handle this?
It can happen that someone‟s score on the practice test differs from the score on the actual
Connector Ability test. PI Company offers the Connector Ability as the actual selection test
because this test has been developed especially for this purpose; this test meets the highest
criteria with respect to reliability and validity.
In contrast to the Connector Ability, the practice test is a test that consists of a fixed number of
questions that can be practiced as often as one wishes.
We advise our customers to stress to candidates that the primary purpose of the practice test
is indeed to practice with the type of questions that will also be offered in the actual test. The
practice test is meant for preparation and gives only an indication of the level someone can
The difference between the outcomes on both tests, can depend on one of the following
Type of test: the Connector Ability test is more reliable and more valid than the
Norm group: the highest available norm group for the practice test is a Bachelor‟s
norm group (BA). Comparing test outcomes needs to be based on the same
educational reference group. People with a Masters educational level (MA)
achieve on average a higher score (on both tests) than people with a Bachelors
educational level (BA). Therefore, when a person‟s scores (on the Connector
Ability) are compared to the scores of a MA norm group, this person will have a
lower outcome than when scores (on the practice test) are compared to a BA
Effect of practicing: one can take the practice test as often as one likes; the
questions stay the same. By practicing, the score on the practice test can keep
Conditions under which the tests are taken can differ:
Often the practice test will be taken at home, the Connector Ability will more often
be taken at the office.
Some people achieve less well when they feel themselves under pressure; when
they take the actual test, whether or not at the organisation‟s office. Someone
can then score below his/her real intelligence level. The other way around, some
people achieve better results under pressure, when taking the actual test.
In addition, there can be more reasons why someone sometimes does not
achieve in an optimal way. For example, because of illness but also when
someone is interrupted or disturbed while taking the test.
FAQ 20110216| Connector Ability 3
10. What is the difference between G -factor and IQ?
There is no real difference. IQ is just a specific measurement scale that refers to the total
world population (mean 100, range 15). In general, organisations that wish to use intelligence
tests, like Connector Ability, want to compare a person to a more specific norm group, most of
the time a group of people with a specific educational level (for example Masters). Then it is
not necessary to estimate the IQ-score in addition to the t-score, the score used to compare
the score of a person with the norm group scores.
11. Does the speed of answering have an effect on the Connector
The speed has no effect on the test‟s score, because speed is not included in the
calculation of the score. A candidate has 1.5 minutes to answer a question. Answering
earlier does not cause a higher score and also doesn‟t provide more or less questions in
the test. However, a right or a wrong answer does. An adaptive questionnaire means that
a right answer is followed by a more difficult question, whereas after a wrong answer a
more easy question is presented. The test continues until there is a reliable calculation of
how difficult a question must be should the candidate only just be able to answer it
correctly. So with an adaptive questionnaire the speed of answering doesn‟t matter,
because more difficult questions can be presented earlier, namely when the answer to
the question is correct.
A „classic‟ intelligence test is usually a „speed and power‟ test. That means that the
questions at the end are more difficult than at the beginning, and that it is important to
work correctly and fast, so that there is enough time to get to the more difficult questions
and to, hopefully, answer these correctly.
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