Nancy Mather

Steve McCallum

Sherry Mee Bell

Barbara J. Wendling

The Tests of Dyslexia (TOD) is a comprehensive assessment tool designed to identify and diagnose dyslexia in individuals aged 4 to 70. It helps professionals measure a variety of cognitive and linguistic skills, including phonological processing, word reading, and spelling. The TOD provides a detailed analysis to assist in creating targeted intervention plans. The tool is ideal for educators, psychologists, and clinicians involved in dyslexia screening and diagnosis. 
 
&nbsp;

Platform Type

Material Type

Manuals

Guides

Record Forms

Response Booklets

Stimulus Books

Training Complexity

Skill Proficiency

Tests of Dyslexia with British English TOD-S Forms

The Tests of Dyslexia (TOD) is an assessment tool for diagnosing dyslexia in people aged 4 to 70, focusing on cognitive and linguistic skills. The TOD provides a detailed analysis to assist in creating targeted intervention plans.

Kits

Booklets, record forms, answer sheets, report usages & subscriptions

Test forms & reports

Manuals, stimulus books, replacement items & other materials

Support materials

Training

All tests and materials offered for TOD™

All products

Tests of Dyslexia American English

Print items

Manual; Norms; Dyslexia Interventions and Recommendations: A Companion Guide to the Tests of Dyslexia (TOD); TOD-C Easels 1 and 2; TOD-C Response Booklet Grade 1&ndash;Adult (Pack of 10); TOD-C Record Form Grade 1&ndash;Adult (Pack of 10)*; TOD-S Administration Guide; TOD-S Response Booklet and Scoring Sheet Grades K&ndash;1 (Pack of 10)*; TOD-S Response Booklet and Scoring Sheet Grades 2&ndash;5 (Pack of 10)*; TOD-S Response Booklet and Scoring Sheet Grade 6&ndash;Adult (Pack of 10)*, canvas carrying bag

*Free online scoring available

Online items

10 uses of each of the following Rating Forms: TOD-C Teacher; TOD-C Self; TOD-C Parent/Caregiver 
 
ATTENTION British English users: 
 
If you use the digital administration of TOD-C, please review the &quot;Recommendations for UK Users of the Tests of&nbsp;Dyslexia (TOD) Regarding Americanisms&quot;&nbsp;<a href="https://www.pearsonclinical.co.uk/content/dam/school/global/clinical/uk-clinical/assets/tod/TOD-UK-Recommendations.pdf" id="menurp29" rel="noreferrer noopener" target="_blank" title="https://www.pearsonclinical.co.uk/content/dam/school/global/clinical/uk-clinical/assets/tod/tod-uk-recommendations.pdf">here</a>.

TOD-C Comprehensive Kit with British English TOD-S Forms, W-700XI

TOD-S British English Print Response Booklet and Scoring Sheet Grades K-1 (Pack of 10), W-701F

TOD-S British English Print Response Booklet and Scoring Sheet Grades 2-5 (Pack of 10), W-701G

TOD-S British English Print Response Booklet and Scoring Sheet Grade 6-Adult (Pack of 10), W-701H

Manual; Norms; Dyslexia Interventions and Recommendations: A Companion Guide to the Tests of Dyslexia (TOD); TOD-S Administration Guide; TOD-S Response Booklet and Scoring Sheet Grades K&ndash;1 (Pack of 10)*; TOD-S Response Booklet and Scoring Sheet Grades 2&ndash;5 (Pack of 10)*; TOD-S Response Booklet and Scoring Sheet Grade 6&ndash;Adult (Pack of 10)*, canvas carrying bag

*Free online scoring available

TOD-S Print Screener Kit with British English TOD-S Forms, W-701XI

Manual; Norms; Dyslexia Interventions and Recommendations: A Companion Guide to the Tests of Dyslexia (TOD); TOD-E Easel; TOD-E Record Form Grades K&ndash;2 (Pack of 10)*; TOD-S Administration Guide; TOD-S Response Booklet and Scoring Sheet Grades K&ndash;1 (Pack of 10)*; TOD-S Response Booklet and Scoring Sheet Grades 2&ndash;5 (Pack of 10)*, canvas carrying bag

*Free online scoring available

Online items

<ul>
	<li>10 uses of each of the following Rating Forms: TOD-E Teacher</li>
	<li>TOD-E Parent/Caregiver</li>
</ul>
Please note this is not a British English version of the TOD-E, i.e. there are no new norms - the existing sample and normative data remain the same. This kit contains modified TOD-S forms based on certain American spelling / cultural differences being changed. The user guide explains all the recommendations.

TOD-E Early Kit with British English TOD-S Forms, W-702XI

Print items

Manual; Norms; Dyslexia Interventions and Recommendations: A Companion Guide to the Tests of Dyslexia (TOD); TOD-C Easels 1 and 2; TOD-C Response Booklet Grade 1&ndash;Adult (Pack of 10); TOD-C Record Form Grade 1&ndash;Adult (Pack of 10); TOD-S Administration Guide; TOD-S Response Booklet and Scoring Sheet Grades K&ndash;1 (2 Packs of 10)*; TOD-S Response Booklet and Scoring Sheet Grades 2&ndash;5 (2 Packs of 10)*; TOD-S Response Booklet and Scoring Sheet Grade 6&ndash;Adult (Pack of 10)*; TOD-E Easel; TOD-E Record Form Grades K&ndash;2 (Pack of 10)*, canvas carrying bag

*Free online scoring available

Online items

Manual; Norms; 10 uses of each of the following Rating Forms: TOD-C Teacher; TOD-C Self; TOD-C Parent/Caregiver; TOD-E Teacher; TOD-E Parent/Caregiver
Please note&nbsp;this is not a British English version of the TOD Print Combinbation Kit, i.e. there are no new norms - the existing sample and normative data remain the same. This kit contains modified TOD-S forms based on certain American spelling / cultural differences being changed. The user guide explains all the recommendations.

TOD Print Combination Kit with British English TOD-S Forms, W-705XI

Online self-study for learning for the Tests of Dyslexia. Includes online videos and associated digital support materials on the WPS Professional Learning Center (WPS ProLearn). 
 
Please note:&nbsp;This product requires manual provisioning by the original publisher. This manual process may take some additional time after your purchase. 
 
This online self-study video program&nbsp;does not&nbsp;include a certificate of attendance.

TOD Training Video Program, LMS-705

TOD-E Digital Easel, W-702EP

TOD-E Print Easel, W-702E

TOD-C Digital Easel 2, W-700HP

TOD-C Print Easel 2, W-700H

TOD-C Digital Easel 1, W-700GP

TOD-C Print Easel 1, W-700G

TOD-S Online Administration Guide, W-701DP

TOD-S Print Administration Guide, W-701D

TOD Print Manual, W-700M

TOD Online Manual, W-700MP

TOD Online Norms, W-700NP

TOD Print Norms, W-700N

Dyslexia Interventions and Recommendations - An Online Companion Guide to the Tests of Dyslexia (TOD), W-700JP

Dyslexia Interventions and Recommendations - A Print Companion Guide to the Tests of Dyslexia (TOD), W-700J

TOD-C Online Teacher Rating Form (5 Uses), W-700CP5

TOD-C Online Teacher Rating Form (10 Uses), W-700CP10

TOD-C Online Self-Rating Form (5 Uses), W-700DP5

TOD-C Online Self-Rating Form (10 Uses), W-700DP10

TOD-C Online Parent/Caregiver Rating Form (5 Uses), W-700E5

TOD-C Online Parent/Caregiver Rating Form (10 Uses), W-700EP10

TOD-E Online Teacher Rating Form (5 Uses), W-702BP5

TOD-E Online Teacher Rating Form (10 Uses), W-702BP10

TOD-E Online Parent/Caregiver Rating Form (5 Uses), W-70CP5

TOD-E Online Parent/Caregiver Rating Form (10 Uses), W-702CP10

TOD-C Print Response Booklet Grade 1-Adult (Pack of 10), W-700A

TOD-C Print Record Form Grade 1-Adult (Pack of 10), W-700B

TOD-E Print Record Form Grades K-2 (Pack of 10), W-702A

Qualification Level

&nbsp;

Level A

This approval level enables you to buy our assessments that require no professional degree, accreditation, organization membership, or license/certificate.

Level B

This approval level enables you to buy our assessments requiring A or B qualification levels.

Level C 

This approval level enables you to buy all our assessments.

Get instructions and help on ordering online or from our product catalog.

<a href="/ordering.html">Ordering FAQs</a>

<a href="/contact-us.html" target="_blank">Contact Us</a>

Phone: +44(0)203 564 6419 
Lines are open from&nbsp;9am to 5pm&nbsp;Monday to Friday&nbsp;(excluding bank holidays).

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			<h4>TOD UK Recommendations</h4>

			There are essential guidelines for UK users to ensure that Americanisms in the Tests of Dyslexia (TOD) are adapted to British English, making the assessments more accurate and relevant.&nbsp;

			<a class="button button--tertiary" href="https://www.pearsonclinical.co.uk/content/dam/school/global/clinical/uk-clinical/assets/tod/TOD-UK-Recommendations.pdf">Read now</a>
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Overview

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			The Tests of Dyslexia (TOD) consists of three sets of direct assessments: TOD-Screener (TOD-S), TOD-Early (TOD-E), and TOD-Comprehensive (TOD-C). The tests measure skills and abilities across three domains: reading and spelling; linguistic processing; and vocabulary and reasoning. TOD Parent/Caregiver, Teacher, and Self-Rating Scales gather data on indicators of dyslexia such as family history of reading problems, motivation, and early speech or language difficulties.

			Together, the tests can help you create a profile of reading, spelling, and linguistic abilities to identify those who have characteristics consistent with a dyslexia diagnosis. The <a href="/content/dam/school/global/clinical/uk-clinical/assets/tod/TOD-UK-Recommendations.pdf" rel="noopener">TOD UK Recommendations Doc</a> provides essential guidelines for UK users, ensuring that Americanisms in the Tests of Dyslexia (TOD) are adapted to British English, making the assessments more accurate and relevant.&nbsp;

			<h3>TOD Benefits:&nbsp;</h3>

			Allows practitioners and educators to accurately assess and diagnose dyslexia and specific learning disability in reading, provides risk and probability indexes, and includes intervention recommendations based on assessment results.

			Expanded Scoring Information:

			Age-based and grade-based standard scores, percentile ranks, confidence intervals, and age- and grade-equivalent scores for each TOD test; Dyslexia Risk Index (TOD-S); Early Dyslexia Diagnostic Index (TOD-E); Dyslexia Diagnostic Index (TOD-C); composite scores in the domains of reading and spelling, linguistic processing, and vocabulary and reasoning; growth scores for monitoring progress. Co-normed TOD Rating Scales provide&nbsp;T-scores, percentile ranks, confidence intervals, and level of risk.

			The TOD offers flexible testing configurations, standalone test options, as well as supplemental composites. The TOD-C generates&nbsp;<a href="/content/dam/school/global/clinical/uk-clinical/assets/tod/00-TOD-Front-Matter-091923-chart.pdf" rel="noopener" target="_blank">15 composite scores</a>, and the TOD-E generates&nbsp;<a href="/content/dam/school/global/clinical/uk-clinical/assets/tod/00-TOD-E-Easel-Front-Matter-072623-chart.pdf" rel="noopener" target="_blank">4 composite scores</a>, allowing practitioners to tailor each assessment to the needs of students. 
			 
			Comprehensive Tests:

			Decades of reading research have identified the linguistic skills that underlie reading and spelling abilities, as well as those that are typically affected by dyslexia. In alignment with that research, the TOD measures:

			<ul>
				<li>Sight Word Acquisition</li>
				<li>Phonics Knowledge</li>
				<li>Basic Reading Skill</li>
				<li>Decoding Efficiency</li>
				<li>Spelling</li>
				<li>Reading Fluency</li>
				<li>Reading Comprehension Efficiency</li>
				<li>Phonological Awareness</li>
				<li>Rapid Automatized Naming</li>
				<li>Auditory Working Memory</li>
				<li>Orthographic Processing</li>
				<li>Visual&ndash;Verbal Paired-Associate Learning</li>
				<li>Vocabulary</li>
				<li>Reasoning</li>
			</ul>

			<h3>TOD-Screener</h3>

			This quick screener can be used with individuals or groups to provide a Dyslexia Risk Index (DRI) to show whether a more comprehensive assessment is needed.

			TOD-S tests include:

			<ul>
				<li>Picture Vocabulary (not included in DRI)</li>
				<li>Letter and Word Choice</li>
				<li>Word or Question Reading Fluency&nbsp;</li>
			</ul>

			<h3>TOD-Comprehensive</h3>

			The TOD-C provides a comprehensive dyslexia assessment which yields a Dyslexia Diagnostic Index (DDI) indicating the probability that an individual has dyslexia. The DDI is based on 2 tests from the TOD-S and 6 additional tests from the TOD-C. Another 14 tests provide a detailed look at skills and abilities related to dyslexia.

			TOD-C tests include:

			<ul>
				<li>Phonological Manipulation</li>
				<li>Irregular Word Spelling</li>
				<li>Rapid Letter Naming</li>
				<li>Pseudoword Reading</li>
				<li>Word Pattern Choice</li>
				<li>Word Memory</li>
				<li>Picture Analogies</li>
				<li>Irregular Word Reading</li>
				<li>Oral Reading Efficiency</li>
				<li>Blending</li>
				<li>Segmenting</li>
				<li>Regular Word Spelling</li>
				<li>Silent Reading Efficiency</li>
				<li>Rapid Number and Letter Naming</li>
				<li>Letter Memory</li>
				<li>Rapid Pseudoword Reading</li>
				<li>Rapid Irregular Word Reading</li>
				<li>Symbol to Sound Learning</li>
				<li>Listening Vocabulary</li>
				<li>Geometric Analogies&nbsp;</li>
			</ul>

			<h3>TOD-Early</h3>

			The TOD-E assesses each of the early abilities that most clearly indicate dyslexia in young children, yielding an Early Dyslexia Diagnostic Index (EDDI) score. Two TOD-S tests, along with the 6 TOD-E tests, indicate an individual&rsquo;s risk of dyslexia. &nbsp;

			TOD-E tests include:

			<ul>
				<li>Sounds and Pseudowords</li>
				<li>Rhyming</li>
				<li>Early Rapid Number and Letter Naming</li>
				<li>Letter and Sight Word Recognition</li>
				<li>Early Segmenting</li>
				<li>Letter and Sound Knowledge</li>
			</ul>

			<h3>TOD Rating Scales</h3>

			TOD-C and TOD-E Parent/Caregiver Rating Scales for grades K through 12 (available in English and Spanish) provide information about:

			<ul>
				<li>family history of reading or spelling difficulties;</li>
				<li>delays in early speech or language development;</li>
				<li>the student&rsquo;s ability to read, spell, listen, and speak;</li>
				<li>impressions of the student&rsquo;s abilities compared to others of the same age;</li>
				<li>the student&rsquo;s attitude toward reading; and</li>
				<li>the amount of support needed for homework and organization.</li>
			</ul>

			TOD-C and TOD-E Teacher Rating Scales provide information about:

			<ul>
				<li>the amount of difficulty a student has with reading, spelling, and other classroom tasks;</li>
				<li>whether a student needs extra time to complete assignments;</li>
				<li>how oral language and reasoning skills compare to those of peers; and</li>
				<li>apparent preference for other activities over reading.</li>
			</ul>

			TOD-C Self-Rating Scales for Grade 1 through adulthood provide information about:

			<ul>
				<li>attitude toward reading; and</li>
				<li>perception of oral language, word reading, comprehension, and spelling abilities.</li>
			</ul>
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Product Details

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			The following resources are available for TOD.&nbsp;
			&nbsp;

			<ul class="link-list">
				<li><a href="/content/dam/school/global/clinical/uk-clinical/assets/tod/TOD-UK-Recommendations.pdf">TOD UK Recommendations&nbsp;</a></li>
				<li><a href="/content/dam/school/global/clinical/uk-clinical/assets/tod/00-TOD-Front-Matter-091923-chart.pdf">15 Composite Scores</a></li>
				<li><a href="/content/dam/school/global/clinical/uk-clinical/assets/tod/00-TOD-E-Easel-Front-Matter-072623-chart.pdf">4 Composite Scores</a></li>
			</ul>

			<h3>Videos</h3>

			<ul class="link-list">
				<li><a href="https://www.youtube.com/watch?v=DhiAv8egGM4&amp;feature=youtu.be">Introduction to the Tests of Dyslexia (TOD&trade;)</a></li>
				<li><a href="https://www.youtube.com/watch?v=aLApI0lYI6U">Unboxing: Overview of the Tests of Dyslexia (TOD&trade;)</a></li>
				<li><a href="https://www.youtube.com/watch?v=AMg_qoTlF_Y">How to Administer the Tests of Dyslexia (TOD&trade;) Remotely&nbsp;</a></li>
			</ul>
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Resources

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						<td>What is the TOD?</td>
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						The Tests of Dyslexia (TOD) is a comprehensive battery of tests and resources designed to help identify and plan interventions for individuals of all ages with dyslexia. It is authored by Nancy Mather, PhD, R. Steve McCallum, PhD, Sherry Mee Bell, PhD, and Barbara J. Wendling, MA.
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						<td>What is the TOD used for?</td>
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						The TOD identifies the risk and probability of dyslexia or specific learning disability in reading in individuals aged 5 to 89. The TOD also provides instruction and intervention recommendations based on assessment results.
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						<td>What comprises the TOD?</td>
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						The TOD has three batteries: the TOD-Screener, three tests that can be administered to groups or to individuals, available in a paper or digital format; the TOD-Early, designed for the early identification of students in Grades K&ndash;2 (5 years, 0 months&ndash;9 years, 3 months); and the TOD-Comprehensive, designed for examinees from Grade 1 to adulthood (6 years, 0 months&ndash;89 years, 11 months).
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						<td>What does the TOD include?</td>
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						<td>
						<ol>
							<li>Indexes designed to indicate the risk and probability of dyslexia</li>
							<li>Composites and tests that measure reading skills (untimed and timed), spelling, specific linguistic risk factors (phonological awareness, orthographic processing, rapid automatized naming, and working memory), and vocabulary and reasoning abilities</li>
							<li>Self, Parent, and Teacher Rating Scales designed to indicate risk of dyslexia as well as capture qualitative indicators of dyslexia, such as a family history of reading problems and early difficulties with speech and language</li>
							<li>The Dyslexia Interventions and Recommendations guide to help examiners develop IEPs and targeted intervention plans to address specific skill weaknesses</li>
						</ol>
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						<td>What sets TOD apart from other reading assessments?</td>
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						First, the TOD covers a wide age range and includes the major components that are needed for a comprehensive dyslexia assessment. There is no need to cobble together results from different tests with different norm groups.

						Second, the TOD includes the reading and linguistic abilities that are most relevant to the diagnosis of dyslexia. The TOD includes measures of word recognition (untimed and timed), phonics knowledge, reading fluency, and comprehension efficiency (the ability to comprehend text under time pressure).

						The TOD also includes linguistic risk factors (e.g., phonological awareness, rapid automatized naming) that can help determine the factors that are affecting reading development.

						Third, the TOD includes measures of vocabulary and reasoning to help determine if the reading problem is specific and/or unexpected in relation to abilities that do not require reading.

						Fourth, the TOD includes rating scales to help standardise the process of collecting information from parents, teachers, or individuals being assessed.

						Fifth, the TOD includes a guide to interventions to help develop an instructional plan.
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						<td>Who can purchase the TOD?</td>
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						Professional standards in testing are presented in the Standards for Educational and Psychological Testing published by the American Educational Research Association (AERA), American Psychological Association (APA), and the National Council on Measurement in Education (NCME).

						Examiners should use only those tests for which they have the appropriate training and expertise. All the TOD components can be purchased by educators, psychologists, and related professionals who serve students who may have dyslexia.

						These are Level B tests, so examiners must have a bachelor&rsquo;s degree in psychology or a related discipline (e.g., school counselors, speech and language pathologists, social workers, special education teachers, medical professionals) and training and instruction in administration and interpretation of standardised tests.
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						<td>Who can use the TOD?</td>
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						The components of the TOD can be used by a variety of clinicians and educators. For example, a classroom teacher may administer the TOD-Screener and complete the Teacher Rating Scale. Reading specialists, educational diagnosticians, psychologists, and speech&ndash;language pathologists are best suited to administer the TOD-Early or the TOD-Comprehensive due to their advanced coursework and experience with standardised tests.

						Teachers who are trained to administer the test and are supervised by professionals who have advanced training with standardized assessments may also administer the TOD-E or TOD-C.

						Interpreting test results requires a higher level of skill. For that reason, while a broader range of individuals can administer the test, interpreting results requires knowledge of dyslexia and formal training in test administration, scoring, and interpretation.
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						<td>How do I score the product?</td>
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						The TOD-S can be administered digitally on OES and scored automatically or can be administered on paper.

						The TOD-C and TOD-E can only be administered on paper (although PDF easels are available for remote/digital administration, responses are recorded/scored on a paper record form).

						When administered on paper, the TOD-S, TOD-C, and TOD-E can be hand-scored or scored on OES for free. This free online scoring and reporting provides a convenient alternative to hand-scoring as well as an interpretive score report and access to a customizable intervention report.
						</td>
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						<td>How do I access the rating scales?</td>
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						The rating scales included in the TOD-C, TOD-E, and TOD Combination kits are only available on our Online Evaluation System&trade; (OES) at platform.wpspublish.com. Once you use the activation code on the OES, you can print out any of the Parent, Teacher, or Self-Rating Forms at no extra cost and as many times as you want if you prefer to administer any forms on paper. However, you still have to score the response forms online, which gives you access to beneficial reporting options.
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						<td>What items do I need to purchase?</td>
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						<td>
						You may purchase any of the TOD kits (Combination, Screener, Early, or Comprehensive), all of which include forms, manual, and intervention planner, or you may purchase individual items.
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						<td>What is the reliability/validity of the TOD?</td>
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						<td>
						The answer to this question is complicated and requires some context.

						Reliability and validity evidence occurs over time and from multiple studies and methodologies. It cannot be defined by single scores. Expert recommendations for interpreting reliability and validity estimates are produced by statistical equations. In general, the reliabilities of the tests and composites are almost all &gt;.80 and thus support the stability of the TOD across tests and over time.

						Several studies provide validity evidence for the TOD. Confirmatory factor analyses support the factorial structure of the Dyslexia Risk and Diagnostic Index scores, as well as the component Reading and Spelling and Linguistic Processing Index scores.

						Additionally, concurrent validity analyses demonstrate that each TOD test correlates in expected ways with other tests of similar constructs. Most importantly, comparisons between typically developing individuals and those with a diagnosed reading disability show that the latter group performs more poorly on the TOD measures.

						This disparity in performance represents a clinically meaningful difference. Furthermore, at a cutoff score of 80, the TOD-S Dyslexia Risk Index discriminates individuals with a reading disability from typically developing individuals with sensitivity of &ge;.80 and specificity of &ge;.99; the TOD-C Dyslexia Diagnostic Index does so with sensitivity of &ge;.78 and specificity of &ge;.97; and the TOD-E Early Dyslexia Diagnostic Index does so with sensitivity of &ge;.80 and specificity of &ge;.99.
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						<td>Is a certain group contained in the standardisation or clinical sample?</td>
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						<td>
						2,518 individuals aged 5 to 89 participated in the standardisation and validation studies.

						The TOD normative samples are TOD-C child (n = 1,401); TOD-C adult (n = 342); and TOD-E (n = 347). The TOD-S was taken by individuals in each of the three samples and serves as the basis for the TOD-S standardisation.

						Each sample closely matches U.S. Census data based on gender, race/ethnicity, parents&rsquo; educational level, and geographic region.

						The remaining individuals made up the clinical validation samples and had a reading disability and/or other clinical diagnosis.
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						<td>Is there a digital version?</td>
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						<td>
						The TOD manual, norms, administration booklet, intervention guide, and TOD-E and TOD-C easels are available in pdf digital format.

						Examiners can use the TOD-E and TOD-C pdf easels for remote administration, but paper materials, record forms, and response booklets are still required.

						Free online scoring for TOD-S, TOD-C, and TOD-E is available on the WPS Online Evaluation System (platform.wpspublish.com). The TOD-Screener is available as a paper kit or an online kit with full online administration capabilities, without the use of paper materials.

						TOD Rating Scales are administered and scored online only, but a paper version can be downloaded for use with parents, teachers, or individuals who do not have online access at no extra cost.

						Examiners will need to enter the responses into the Online Evaluation System to obtain the score.
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						<td>Do you have recommendations for UK Users of the Tests of Dyslexia (TOD) Regarding Americanisms?</td>
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						<td>
						Yes we do - They can be found <a href="https://www.pearsonclinical.co.uk/content/dam/school/global/clinical/uk-clinical/assets/tod/TOD-UK-Recommendations.pdf">here</a>.
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