Continuous
performance tests (CPT) are used to determine attention span in individuals
of all ages. These types of tests usually require that the individual
perform a simple but monotonous task over and over. They are often
administered on the computer and if the person should look away, be
distracted or daydream they are likely to make an error. A commonly used CPT
is the IVA test which stands for Integrated Visual and Auditory Processing
Test. It is administered on the computer and requires the individual to
click the mouse when they see or hear the number one displayed on the
monitor. It takes about fifteen minutes to complete the IVA. The results of
the IVA test are compared to a large database of individuals and are matched
for age. The IVA test and other similar CPT tests have proven useful in
evaluating the presence of attentional disorders such as ADD. These tests
also measure reaction time (RT) or how long it takes an individual to click
the mouse. The RT, which is measured in milliseconds, is compared to large
databases of individuals and statistical measures are made which can help to
identify delays in visual or auditory processing.
CPT