comprehensive measure of visual perception that reliably differentiates
visual-perceptual problems from visual-motor integration deficit!
Ages: 11-0 through 74-11Testing Time: 25 minutesAdministration: Individual
DTVP-A is a battery of six subtests that measure different but
interrelated visual-perceptual and visual-motor abilities. The battery
has empirically established reliability and validity. The normative
sample consists of 1,664 adolescents and adults residing in 19 states;
demographic characteristics approximate the current census data.
Evidence is provided to show that the test is unbiased with respect to
gender and race.
The DTVP-A is the latest test based on the work
of Marianne Frostig. It can be administered by psychologists,
neuropsychologists, occupational therapists, physical therapists,
regular and special educators, and diagnosticians who are interested in
examining the visual-perceptual status and visual-motor integration
skills of adolescents and adults.
The DTVP-A is especially
useful in the evaluation of the neuropsychological integrity of TBI and
stroke patients where right-hemisphere function may be at issue. Normed
through age 75, the DTVP-A has sufficient floor or easy items to allow
accurate assessment of even individuals with severe TBI and other
neurologically impaired individuals. The reliability of the various
subtests and index scores indicates that the DTVP-A will be sensitive to
improvement over the course of treatment.
The subtests and
indexes also will suggest areas of emphasis in cognitive and fine motor
rehabilitation. The DTVP-A is particularly useful in distinguishing true
visual-perceptual deficits from problems solely with complex eye-hand
or perceptual-motor actions. The DTVP-A may also assist in differential
diagnosis of various of the dementias in elderly patients, providing a
baseline for normal aging changes in perception and perceptual-motor
skills against which the referred patient may be referenced.
1-Copying: Individuals are shown a simple figure and asked to draw it
on a piece of paper. The figure serves as a model for the drawing.
2-Figure-Ground: Individuals are shown stimulus figures and asked to
find as many of the figures as they can on a page where the figures are
hidden in a complex, confusing background.
3-Visual-Motor Search: The individual is shown a page covered in
numbered circles, randomly arranged on the page. The individual connects
the circles with a line, in numerical sequence, as quickly as possible.
- Subtest 4-Visual Closure: Individuals are shown a stimulus
figure and asked to select the exact figure from a series of figures
that have been incompletely drawn.
- Subtest 5-Visual-Motor
Speed: Individuals are shown (a) four different geometric designs, two
of which have special marks in them, and (b) a page filled completely
with the four designs, none of which have marks in them.
6-Form Constancy: Individuals are shown a stimulus figure and asked to
find it in a series of figures. In the series, the targeted figure will
have a different size, position, and/or shade, and it may be hidden in a
Composite Scores or Indexes
The most reliable scores for the DTVP-A are the indexes. These scores
are found by adding the standard scores of the subtests that comprise a
composite and converting the sum to an index.
Visual-Perceptual Index: The GVPI is the best measure of what the
majority of people mean when they say "visual perception." Data from six
subtests, each of which measures a different type of visual perception
in a different manner, contribute to the GVPI. When GVPIs are below 90,
examiners need to pay more attention to the clinically important
indexes- the Motor-Reduced Visual Perceptual Index (MRPI) and the
Visual-Motor Integration Index (VMII). Examination of these indexes may
help explain the causes for low GVPIs.
- Motor-Reduced Visual
Perception Index: Of all of the DTVP-A indexes, the MRPI is the "purest"
and most direct measure of visual perception in that only minimal motor
skills (e.g., pointing) are required to show perceptual competence.
This index is formed by combining the standard scores from the
Figure-Ground, Visual Closure, and Form Constancy Subtests.
Integration Index: To do well on this composite, individuals must
perform complex eye-hand coordination tasks. Low scores do not
necessarily indicate poor visual perception; they may mean that the
individuals have awkward hand movements or that they have difficulty
coordinating hand-to-eye movements. This index is formed by combining
the standard scores of the Copying, Visual-Motor Search, and
Visual-Motor Speed Subtests.
Special Features of the DTVP-A
- Subtests were developed to be appropriate for adolescents and adults.
normative sample reflects the current population characteristics of the
United States relative to race, ethnicity, gender, geographic region,
parent education, and income.
- Internal consistency, stability, and interscorer reliability for all indexes are high.
evidence shows that all DTVP-A subtests and indexes are useful for
measuring visual-perceptual and visual-motor integration skills.
- Evidence is provided to show that the test is unbiased with respect to gender and race.
COMPLETE DTVP-A KIT INCLUDES: Examiner's
Manual, Picture Book, 25 Profile/Examiner Record Forms, and 25 Response
Booklets, all in a sturdy storage box. (2002)