Test of Integrated Language and Literacy Skills (TILLS)
Authors: Nickola Nelson, PhD / Elena Plante, PhD / Nancy Helm-Estabrooks, ScD / Gillian Hotz, PhD
- Written and Oral Language
- Ages 6 through 18
- Testing Time: 90 minutes
- Individual Administration
- Qualification Level B
The Test of Integrated Language and Literacy Skills (TILLS) is a comprehensive, norm-referenced test that has been standardized for three purposes:
- To identify language/literacy disorders
- To document patterns of relative strengths and weaknesses
- To track changes in language and literacy skills over time
The TILLS is composed of 15 subtests that allow examiners to assess and compare students language-literacy skills at both the sound/word level and the sentence/discourse level across the four oral and written modalities: listening, speaking, reading, and writing.
Delayed Story Retelling
Digit Span Forward
Digit Span Backward
The TILLS can be used flexibly to administer a single subtest, a combination of subtests, or the entire test. The TILLS Student Language Scale allows students, parents, and teachers to rate how well a student performs on academic tasks.McDonalds Omega values for subtests ranged from 0.95 to 0.99.Test-restest correlations for subtests ranged from 0.71 to 0.99.Inter-rater reliability correlations ranged from 0.84 to 0.99.Validity studies demonstrated that the TILLS is able to differentiate typically developing individuals from those at risk for, or diagnosed with, a language or literacy disorder.TILLS subtests scores correlate significantly with other commonly used language and literacy assessments.
The TILLS was standardized on a representative sample of 1,262 children and adolescents.
Administration and Scoring
Identification core subtests can be administered in only 25-45 minutes, and a comprehensive assessment can typically be administered in 90 minutes or less. Raw scores are converted to standard scores and Composite standard scores. Cut scores indicate whether the students score is consistent with the presence of a language/literacy disorder.
Reliability and Validity