--- title: "WAIS Test Explained: Adult IQ Scale & Indian Use" url: "https://www.ellomind.com/ai-tools-for-psychologists/tests/wais/" description: "A clinician's overview of the WAIS (Wechsler Adult Intelligence Scale): what it measures, its index scores and FSIQ, who it is for, and use in India. Educational only." --- Intelligence # Wechsler Adult Intelligence Scale (WAIS) Individually administered intelligence test · 16 to 90 years A clinician's overview of the Wechsler Adult Intelligence Scale (WAIS), the most widely used individually administered IQ test for adults. What it measures, how it is structured, and its use in India. [Try the Case formulation (5Ps and CBT) tool](/ai-tools-for-psychologists/case-formulation/) [All tests](/ai-tools-for-psychologists/tests/) **Educational overview only.** The WAIS is a copyrighted, restricted instrument published by Pearson, purchased and administered only by qualified professionals. ElloMind does not provide the materials, items or scoring; this page is educational only. ## What it is The WAIS is the adult counterpart of the WISC, developed by David Wechsler and published by Pearson (currently WAIS-IV, with WAIS-5 released internationally). It gives a Full Scale IQ and several index scores describing distinct cognitive domains. As with the WISC, the profile of strengths and weaknesses across the indices is usually more useful than the single Full Scale IQ, informing questions about cognitive functioning, learning difficulties, and change after injury or illness. ## What it covers | Verbal Comprehension Index | Verbal reasoning and knowledge | | ------------------------------------- | ------------------------------------ | | Perceptual Reasoning / Visual Spatial | Non-verbal, spatial reasoning | | Working Memory Index | Holding and manipulating information | | Processing Speed Index | Speed of simple visual processing | | Full Scale IQ | Overall cognitive ability | ## Who it is for It is used with people aged roughly 16 and above, for questions about intellectual functioning, cognitive strengths and weaknesses, intellectual disability, giftedness, and cognitive change after neurological events. It is administered one-to-one by a trained psychologist. It is not a group or online test. ## How it is administered The psychologist administers verbal and performance subtests, some timed. Raw scores are converted using age norms into index scores and a Full Scale IQ. The materials are standardised and secure, so only qualified professionals may purchase and administer them, and the items are never published. ## Use in India In India, the WAIS is used in clinical, forensic and neuropsychological settings, though clinicians weigh language, education and cultural familiarity when applying Western norms to Indian adults. Where a culture-reduced measure is preferred, Raven's Progressive Matrices or Indian performance tests may be used alongside or instead. ## Related free tools [Formulation Case formulation (5Ps and CBT)](/ai-tools-for-psychologists/case-formulation/) [Report writing Referral letter](/ai-tools-for-psychologists/referral-letter/) ## Citation and sources Wechsler, D. (2008). Wechsler Adult Intelligence Scale (4th ed.). Pearson. * [Wechsler Adult Intelligence Scale (overview)](https://en.wikipedia.org/wiki/Wechsler%5FAdult%5FIntelligence%5FScale) — Wikipedia ## Frequently asked questions What is the difference between the WAIS and the WISC? + They are the adult and child versions of the same Wechsler family. The WAIS is for ages 16 and above; the WISC is for ages 6 to 16. Can I take the WAIS online for free? + No. The WAIS is a restricted, copyrighted test administered one-to-one by a qualified psychologist. Free online 'IQ tests' are not the WAIS. Is the WAIS used in India? + Yes, in clinical, neuropsychological and forensic settings, with attention to language, education and the fit of Western norms to Indian adults. ## More tests and assessments [Intelligence Wechsler Intelligence Scale for Children (WISC)](/ai-tools-for-psychologists/tests/wisc/) [Non-verbal reasoning Raven's Progressive Matrices (RPM)](/ai-tools-for-psychologists/tests/ravens-progressive-matrices/) [Intelligence (India) Binet-Kamat Test of Intelligence (BKT)](/ai-tools-for-psychologists/tests/binet-kamat-test/) [Intelligence (India) Malin's Intelligence Scale for Indian Children (MISIC)](/ai-tools-for-psychologists/tests/misic/) [Performance test (India) Bhatia's Battery of Performance Tests of Intelligence (Bhatia Battery)](/ai-tools-for-psychologists/tests/bhatia-battery/) [Performance test (India) Seguin Form Board Test (SFBT)](/ai-tools-for-psychologists/tests/seguin-form-board/) [Adaptive behaviour Vineland Social Maturity Scale (VSMS)](/ai-tools-for-psychologists/tests/vineland-social-maturity-scale/) [Cognitive screening Mini-Mental State Examination (MMSE)](/ai-tools-for-psychologists/tests/mmse/) [Projective test Thematic Apperception Test (TAT)](/ai-tools-for-psychologists/tests/thematic-apperception-test/) [Depression Beck Depression Inventory (BDI-II)](/ai-tools-for-psychologists/tests/beck-depression-inventory/) [Personality Minnesota Multiphasic Personality Inventory (MMPI)](/ai-tools-for-psychologists/tests/mmpi/) [Personality Sixteen Personality Factor Questionnaire (16PF)](/ai-tools-for-psychologists/tests/16pf/) This page is general educational information for professionals, not clinical or legal advice, and not a substitute for training in the instrument. ElloMind does not provide, sell or reproduce copyrighted test materials. [Back to all tests](/ai-tools-for-psychologists/tests/)