Is the WISC-IV reliable and valid?

Is the WISC-IV reliable and valid?

The majority of the subtest reliability coefficients across special groups are similar to or higher than those coefficients reported for the normative sample, suggesting that the WISC–IV is equally reliable instrument for assessing children who are developing typically and children with clinical diagnoses.

How reliable is the WISC?

Reliability for the WISC-IV is high with r = 0.97 for the FSIQ and r = 0.87–94 for the specific intelligence indices.

What is the validity and reliability of the WISC V?

Validity requires evidence that test scores can be interpreted as they are intended and can be appropriately used for a specific, defined purpose. — Reliability is “the consistency of scores across replications of a testing procedure” (p. 33).

Is the Wechsler Intelligence Scale for Children reliable?

Although the development of interventions is based upon both quantitative and qualitative information, funding and placement decisions continue to be based upon IQ and achievement composite scores. The WISC-III has proven to be a reliable and valid instrument for these purposes.

Can you still use the WISC-IV?

The WISC-V is the most recent version of the WISC test, but older versions (the WISC-IV and the WISC-III) may still be given.

How does the WISC V test differ from the WAIS IV test?

The WISC-IV required the administration of 10 subtests to calculate the FSIQ and primary index scores, and the WISC V requires 10 subtests for the primary subtests but only 7 subtests for the FSIQ.

What is the standard error of measurement for the WISC V?

WISC-V Classification

In testing, there is something called a “standard error of measurement,” meaning a score could range up and down if the test was taken more than once. Test makers have established what this range is. For subtest scores, it’s 3 points and for Index Scores, it’s 15 points.

When was the WISC V normed?

The WISC–V was released at the end of September, 2014, and the extended norms are planned for release approximately a year and a half after the initial release of the WISC–V.

What is the reliability and validity of the WAIS-IV?

The reliability and validity of the WAIS-IV is outlined in the Technical and Interpretive Manual [1]). The main reliability figure based on the standardisation sample for Full Scale IQ was 0.98, indicating good internal consistency.

What are some of the limitations of the Wechsler Scales?

Disadvantages • Very expensive. Cannot be administered by non-psychologists. Administration of the full WAIS-IV is time-consuming. Some subtests are lengthy to administer (Comprehension, Block Design) • There are no parallel versions of the test.

Is WISC-IV standardized?

The original WISC-IV was standardized using a nationally representative sample of the U.S. population, with subsequent publication of Australian norms (Wechsler, 2005). The WISC-IV scores in this paper are based on the latter.

Does the WISC-IV provide a full scale IQ?

The WISC-IV is a standardized measure comprised of fifteen subtests (ten core and five supplemental/optional). This instrument provides a Full Scale Intelligence Quotient (FSIQ) and four Composite or Index Scores.

What are some of the limitations of the Wechsler scales?

When should I use the WAIS over the WISC?

The WAIS-IV measure is acceptable for use with people who are 16–90 years of age. For people younger than 16, the Wechsler Preschool and Primary Scale of Intelligence (WPPSI, 2½–7 years, 7 months) and the Wechsler Intelligence Scale for Children (WISC, 6–16 years) are used.

How do you interpret WISC IV results?

A: Based on the overall score (FSIQ), your son scored in the Average range on the WISC-IV.
…
WISC-IV Score Interpretation.

What is test retest method of reliability?

Test-retest reliability is a measure of reliability obtained by administering the same test twice over a period of time to a group of individuals. The scores from Time 1 and Time 2 can then be correlated in order to evaluate the test for stability over time.

Is the WISC-V a norm referenced test?

The Wechsler Intelligence Scale for Children –Fifth Edition (WISC-V; Wechsler, 2014) is an individually-administered, norm-referenced instrument that provides a measure of general intellectual functioning.

What does WISC-IV measure?

The WISC-IV measures intellectual ability of children from 6 to 16 years. It was developed to provide an overall measure of general cognitive ability, and also measures of intellectual functioning in Verbal Comprehension (VC), Perceptual Reasoning (PR), Working Memory (WM) and Processing Speed (PS).

What is the reliability for WAIS-IV test?

What are the limitations of Wechsler Intelligence Scale?

Indeed, a major limitation of these tests is that they do not typically measure IQ below 40 or 50, and that subtest standardized scores, which contribute to the overall score, are highly subject to floor effects and poor estimates of true ability.

What is one advantage of the Wechsler scales?

One benefit of this approach is that the pattern of scores can also provide useful information. For example, scoring high in certain areas but low in others might indicate the presence of a specific learning disability. Like the traditional Stanford-Binet test, the WAIS also provides an overall score.

When was WISC-IV normed?

2003
Basically, the WISC came out in 1949 as a downward extension of an adult IQ test, the Wechsler Bellevue, and was revised in 1974 (WISC R) by Wechsler. The Psychological Corporation revised it again in 1991 (WISC III), and again in 2003 (WISC IV).

What is the most widely used intelligence test?

Wechsler Adult Intelligence Scale – Fourth Edition
Wechsler Adult Intelligence Scale – Fourth Edition (WAIS-IV)
The WAIS-IV is the most commonly used test of intelligence for persons aged 16 through 75 years, and may be the intelligence test chosen if your child is a teenager above the age of 15.

What WISC IV score is gifted?

Students who test in this range are above average and do not generally struggle in school. Moderately Gifted: 130-145. Students who test in this range are moderately gifted and do not generally struggle in school. Highly Gifted: 146-159.

What is a good score on the WISC?

The WISC-V is considered the “gold standard” intelligence test for children ages 6 through 16.
WISC-V Structure.