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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 : S / (SIT) Slosson Intelligence Test. (ORIGINAL) IQ Range 10-164. Severely/Profound Mentally Challenged. Includes 47 Preschool-Early Childhood Items. Confidence Interval set to 95% level. includes Stanines, Percentiles and Normal Curve Equivalents
(SIT-1A) Slosson Intelligence Test Original Complete

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Slosson Intelligence Test – Original Edition (SIT)
Richard L. Slosson, PhD / Expanded Norms Tables: John A. Jensen / Robert J. Armstrong
▶ Ages: 2+
▶ IQ Range: 10 - 164
▶ Individual Administration: 10-20 minutes

The SIT has been a standard in intelligence screening for over 30 years. In addition to being one of the few measures assessing the infant, toddler, and preschool years (two and above), it can also be used with Severely/Profound Mentally Challenged populations because its IQ scales range from 10 to 164. The SIT is to be administered verbally and can be used by psychologists, guidance counselors, special educators, learning disabilities instructors, remedial reading teachers, and others who often need to evaluate an individual’s mental ability.
Expanded Norms Tables with extrapolated table entries close the correspondence between the SIT and the Stanford Binet (L-M) to four hundredths (.04) of an IQ point. This was made possible because of the remarkably high correlation (r=.979) between mental ages for the two tests. Now the expanded norms tables have a lower range of 10; therefore it is no longer necessary to use the ratio IQ formula when testing severely profound individuals. Alternate scoring systems, such as Percentiles, Stanines and Normal Curve Equivalents (NCE’s) and T-scores also correspond to the SIT deviation IQ’s.

Categories Tested in the Slosson Intelligence Test:
• General Information • Similarities and Differences
• Vocabulary • Comprehension
• Digit Span • Arithmetic
• Visual-Motor • Auditory Memory of Sentences

Subsequent testing has been performed on over 4,350 subjects. These subjects range in age from very young nursery school children to older adults. Subjects have been tested in all parts of the country (at least 40% of the U.S.), as well as from all socio-economic strata. Gifted, normal, retarded and mentally ill patients have been included in these studies. Research confirms that the SIT is a valid, reliable, individual IQ test, nine correlational studies falling within the .90’s range, and the test does not produce results that are significantly administrator or subject biased.

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