DESD
Decoding-Encoding Screener For Dyslexia
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(DESD Kit includes test booklet, 100
Spelling test forms, 100 recording forms, and manual)
Dyslexia
Technical Articles
Sight-word recognition, visual recall, and phonetic
analysis
This screening test, which was standardized on a
sample of 678 students in grades 1 through 8, allows you to detect and assess a
child’s specific reading difficulties due to dyslexia. The sight-word
recognition section is norm-referenced (reading standard scores). The encoding
section for visual recall of word orthography and the encoding section for
phonetic analysis are indicators to distinguish deficits in sight-word
recognition and spelling, i.e., dyseidetic ("visual") dyslexia from
that of deficits in phonetic analysis for decoding of words, i.e., dysphonetic
("auditory") dyslexia. The section on letter writing allows you to
detect an abnormal frequency of reversals, indicating dysnemkinetic ("motoric")
dyslexia. Each of these three basic subtypes of dyslexia can be identified and
assessed as to severity (mild, moderate, or marked). Combinations of the three
allow for four mixed subtypes for a total of seven subtypes. The order from
least to most severe is as follows: motoric, auditory, motoric-auditory, visual,
motoric-visual, auditory-visual, motoric-auditory-visual. More clinically, these
subtypes are: dysnemkinesia, dysphonesia, dysnemkinphonesia, dyseidesia,
dysnemkineidesia, dysphoneidesia, dysnemkinphoneidesia. The DESD allows
identification of children who are at risk for these subtypes of dyslexia, so
they can be referred without delay to special services. Early screening and
intervention improves the effectiveness of educational therapy and minimizes
secondary emotional problems dyslexia can create. The prevalence of dyslexia in
the general population is approximately 10% and estimated to be between 10 to
20% in school children.
| Description |
Dyslexia Sub-Types |
Prevalence % |
| Phonetic |
Dysnemkinesia |
5 |
| Sight-Word |
Dyseidesia |
30 |
| Sight-Word-Phonetic |
Dysphonesia |
30 |
| Motoric |
Dysphoneidesia |
30 |
| Sight-Word Motoric |
Dysemkinphonesia |
1 |
| Phonetic Motoric |
Dysemkineidesia |
3 |
| Combination |
Dysnemkinphoneidesia |
1 |
5027 DESD Decoding-Encoding Screener Kit
(English) .......... $108.50
5028 DESD Stimulus
Test Booklet ................................................. $24.75
5029 DESD
100 Spelling Test Response Form ........................... $9.75
5030 DESD Record
Sheets (pad of 100) ....................................... $41.75
5031 DESD Manual
............................................................................. $52.25
]
Diagnostic Code for Billing Dyslexia Testing
(pdf)
Dyslexia
Technical Articles and Bulletins
Dyslexia Determination Kits
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