How accurate is the WISC test?

The test is reliable and valid: The WISC has been extensively researched and has demonstrated high levels of reliability and validity. This means that the test consistently measures what it is intended to measure and produces consistent results over time.

How reliable is the WISC test?

Primary index score stability coefficients ranged from 0.69 (FRI) to 0.84 (VCI) with a M of 0.77. VCI and VSI scores exceeded the minimum reliability standard of 0.80 but the stability of the FRI, WMI, and PSI scores were all below 0.80. The most stable WISC-V score was the FSIQ (r = 0.86).

Is the WISC-IV accurate?

Both the CAIDS-Q and the WISC-IV short form had high and comparable levels of predicting group classification (88% and 91% correct classification, respectively). Both methods would appear to offer clinicians and researchers an efficient and accurate means of identifying those who are likely to have ID.

Is the WISC-V biased?

Conclusions: Statistical bias on the WISC-V within ASD in processing speed and working memory subtests creates significant limitations for the use of FSIQ and especially CPI index scores in ASD populations.

What is the reliability of the WISC III?

Split-half reliabilities for the WISC-III's Full-Scale, Verbal and Performance IQs average 0.96, 0.95 and 0.91 respectively; standard errors of measurement average 3.20, 3.53 and 4.54, respectively. Test-retest reliability coefficients are only slightly below those obtained using the split- half method.

What is the WISC® Test (Wechsler Intelligence Scale for Children®)?

What are the criticism of Wechsler intelligence Scale?

The Wechsler scales are widely used in the USA; however, they have been criticized for their low reliability with individuals with IQ scores less than 50, for being culturally biased, and for yielding lower scores with children who are culturally deprived (Kaplan et al., 1994).

What are the disadvantages of the Wechsler intelligence Scale?

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.

What theory is the WISC based on?

The WISC-V is based on the Cattell-Horn-Carroll model (CHC-model) of cognitive abilities, which McGrew (2009) claims to be the most encompassing taxonomy of cognitive abilities.

What is the WISC assessment for autism?

The WISC–V provides primary index scores that represent intellectual functioning in specified cognitive areas (i.e., Verbal Comprehension Index [VCI], Visual Spatial Index [VSI], Fluid Reasoning Index [FRI], Working Memory Index [WMI], and Processing Speed Index [PSI]), a composite score that represents general ...

What theory of intelligence is the WISC based on?

For the WISC-V, the publisher proposed a five factor higher-order theoretical structure (e.g., Gc, Gf, Gv, Gwm, & Gs) linked to CHC theory. This linkage to a theory of cognitive ability is laudable; however, the accuracy of its linkage with theory may be readily tested via factor analysis.

Can WISC-IV diagnose ADHD?

All children in the WISC-IV sample scored lowest on WMI or PSI, whereas only 88% of the WISC-III children scored lowest on FDI or PSI. Thus, the WISC-IV may be more helpful in diagnosing ADHD than the WISC-III.

Does WISC test for dyslexia?

Wechsler Intelligence Scale for Children-Third Edition may provide some useful information about the presence of specific cognitive disabilities in developmental dyslexia.

What WISC-IV score is gifted?

Therefore, the following four levels of performance were considered for each of the Wechsler scale scores: (1) Gifted, if the score was greater than or equal to 130; (2) Moderately Gifted, if the score was between 120 and 129; (3) Above average, if the score was between 110 and 119; (4) Average, if the score was below ...

What can WISC diagnose?

The WISC-V can be used for purposes of identifying an intellectual disability, giftedness, specific learning disabilities, placement in specialised programs and clinical intervention. The assessment usually requires between one-and-a-half and two hours and is administered using iPads.

Is the WISC accepted by Mensa?

Membership requirement

The minimum accepted score on the Stanford–Binet is 132, while for the Cattell it is 148, and 130 in the Wechsler tests (WAIS, WISC).

What is the average IQ for an autistic person?

According to a study published in the Journal of Autism and Developmental Disorders, the average IQ score for individuals with autism is around 85. However, it's essential to remember that IQ scores do not reflect the full range of an individual's strengths and challenges or their potential for success.

What is the best intelligence test for an autistic child?

Dr. Coplan recommends the comprehensive Test of Non-Verbal Intelligence (TONI), saying that children who do poorly on typical intelligence tests may do very well on the TONI. 4 The test looks more directly at what children know than other tests—not at how well children can use language to communicate what they know.

What is the best assessment for autism?

What is the gifted range for the WISC?

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

How long does a WISC take?

The WISC-V takes 45 to 65 minutes to administer. It generates a Full Scale IQ (formerly known as an intelligence quotient or IQ score) that represents a child's general intellectual ability.

What are 2 disadvantages of intelligence testing?

A major disadvantage of intelligence tests is that they can be relative in nature. They also do not measure other factors of intelligence including emotional intelligence, social skills, moral development, and motivation. Reliability refers to the overall consistency of an intelligence test.

What are the negatives of IQ tests?

Children may be tired, unwell, anxious or uncooperative on the day they take the test. In addition, IQ tests focus on measuring a particular range of intellectual abilities. Thus, they do not assess a child's creative or artistic abilities, or social competence.

What are the three main limitations of IQ tests?

IQ tests have the potential to inaccurately measure an individual's intelligence and cause problems including low confidence, unrealistic expectations, and just a generally flawed understanding of a person's potential.