The Slosson Drawing Coordination Test (SDCT) is designed to identify individuals, particularly children and adults, who may have brain dysfunction or perceptual disorders affecting hand and eye coordination. Developed by Richard L. Slosson, the test can be administered individually or in groups, with scoring based on the accuracy of drawings. The test has high reliability and validity, and norms are established across various demographics to assist in identifying cognitive issues related to visual-motor coordination.

1. Iqra Shahzad
Roll no. 72

2. Purpose

Designed to identify individuals with brain
dysfunction or perceptual disorders
involving hand and eye coordination.

3. 
Population: Children and Adults
Scores: Raw scores, Accuracy Score
Time: (10-15) minutes
Author: Richard L. Slosson
Publisher: Slosson Educational
Publications

4. Description

The Slosson Drawing Coordination Test
(SDCT) is a supplement to the Slosson
Intelligence Test (SIT). It can be given
individually or in groups.

5. Scoring

Each drawing is scored either “plus” when
all lines are contained in the drawing, and or
“minus” when the elements are
distorted. The raw score is the total number
of “minus” drawings. The Accuracy score is
a percentage score for errors at a certain age,
and is obtained from a table in the manual.

6. 

7. Reliability

The reliability coefficient was .96 for test-retest
reliability on a sample ranging from 4
to 52 years, tested at the beginning and the
end of the same session. Inter-scorer
reliability is high, as scoring rules have been
simplified.

8. Validity

The goal of this test is to screen our individuals
with serious forms of brain
damage. Individuals with emotional or mental
disturbances, those lacking motivation, or those
with vision impairments may also show an
abnormal degree of distortion on this test.

9. 
There are also brain dysfunctions that do not
involve eye-hand coordination, so this SDCT
should be used in coordination with the SIT
to strengths and weaknesses may be
determined from the analysis of scatter.
Qualitative validation research involved
testing individuals who were known to be
brain damaged.

10. Norms

Norms have been established for each age
level and for each figure. Norms have been
established for groups reflecting the
individual’s gender, age, dexterity, artistic
ability, vision defects and disorganizing
emotional or mental illness.

11. Suggested use

The SCDT can be used in conjunction with
the Slosson Intelligence Test. It can be used to
identify individuals with various forms of
brain dysfunction of perceptual disorders
where eye-hand coordination is involved.