Donald D. Hammill, Ed.D.
Brian R. Bryant, Ph.D.
Age Range 8 to 17 years
Administration Time 10 to 20 minutes
Administration Type Client-completed
Qualification Level B
Description
The LDDI inventory helps professionals identify learning disabilities in children ages 8 to 17, and reveals the extent to which skill patterns in a particular area (e.g., reading or writing) are consistent with those of individuals known to have a learning disability in that area (e.g., dyslexia or dysgraphia). The LDDI can be completed in 10 minutes by a teacher or speech-language pathologist who is familiar with the student’s skills.
The LDDI inventory is composed of six independent scales, each with 15 easy-to-rate items. Stanines are used to identify the likelihood of intrinsic processing disorders in the six areas—Listening, Speaking, Reading, Writing, Mathematics, Reasoning—as well as to conduct a profile analysis to determine the extent to which a student’s LDDI profile reflects that which is associated with learning disabilities. The inventory was normed on 2,152 students with learning disabilities and reports scores in stanines and percentiles.
Scales & Forms
• Listening
• Speaking
• Reading
• Writing
• Mathematics
• Reasoning
| Reference | Name | Price | VAT applicable |
| LDDI2B | LDDI Examiner’s Manual | £65.00 | No |
| LDDI3C | LDDI Rating Summary Booklets – (50/pkg) | £105.00 | Yes |