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Slosson educational tests and assessments for teachers, educators and other professionals, in schools, hospitals, and corrections.  Used to test students in regular and special education, remedial reading and math, intelligence, visual motor, speech language for school screening and forms for teachers to evaluation students' mental abilities.


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Main Category : O / (OWLS) Listening Comprehension / Oral and Written Expression Kit The OWLS consist of three co-normed scales that provide a highly useful measure of oral and written language.
(OWLS-1) Listening, Oral & Written Expression Kit Complete.
Price: $399.00
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Oral and Written Language Scales (OWLS)
by Elizabeth Carrow-Woolfolk
Age: 3-21

OWLS Listening Comprehension Scale (LCS), Oral Expression Scale (OES) and Written Expression Scale

OWLS is an individually administered assessment of receptive and expressive language for children and young adults ages 3 to 21. The scales include: Listening Comprehension Scale (LCS), Oral Expression Scale (OES), and Written Expression Scale. The LCS portion is administered in 5 to 15 minutes. The OES portion takes approximately 10-25 minutes. While the Written Expression Scale takes 15 to 25 minutes and may be administered individually or in small groups.

The LCS is a measure of receptive language. Using a convenient easel, the examiner reads a verbal stimulus aloud. The examinee responds by indicating a picture on the examinee’s side of the easel. On the OES the examinee either answers a question, completes a sentence, or generates one or more sentences in response to a visual/verbal stimulus. The Written Expression Scale measures important writing skills including: use of conventions; handwriting, spelling, punctuation, use of syntactical forms; modifiers, phrases, sentence structures, ability to communicate meaningfully using relevance, cohesiveness, and organization.

OWLS’ three scales are standardized on a nationwide sample of 1,795. The sample was stratified to match the 1991 Current Population Survey (CPS) figures on sex, race/ethnicity, region, and mother’s education level. Age-based norms can be used in learning disabilities assessments to meet requirements of P.L. 94-142 (IDEA, P.L. 101-476). Raw scores can be converted to standard scores (M=100, SD=15), percentile ranks, normal curve equivalents, stanines, and test-age equivalents.

The Written Expression Scale correlates .84 -.88 with the global scores on achievement batteries (K-TEA, PIAT-R, and WRMT-R); .57 and .62 with measures of receptive language, (OWLS Listening Comprehension Scale and PPVT-R); .66 with the OWLS Oral Expression Scale; and .72 and .67 with measures of Verbal Intelligence (WISC-III VIQ and K-BIT Vocabulary). Score profiles of seven clinical groups include: speech impaired, language delayed, language impaired, mentally handicapped, reading disabled, general learning disabled, and hearing impaired.

OWLS-1 complete kit includes: Listening Comprehension and Oral expression Manual; Listening Comprehension Easel; Oral Expression Record Forms; Written Expression Manual; 25 written Expression Response Booklets; 25 Written Expression Record Forms; 1 written Expression Administration Card

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