Wait, Where’s the Flynn Effect on the WAIS-5?
The recent release of the WAIS-5, a decade and a half after its predecessor, the WAIS-IV, raises immediate questions about the Flynn effect (FE). Does the traditional FE of points per decade in the U.S. for children and adults, identified for the Full Scale IQs of all Wechsler scales and for other g...
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MDPI AG
2024-11-01
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| author | Emily L. Winter Sierra M. Trudel Alan S. Kaufman |
| author_facet | Emily L. Winter Sierra M. Trudel Alan S. Kaufman |
| author_sort | Emily L. Winter |
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| description | The recent release of the WAIS-5, a decade and a half after its predecessor, the WAIS-IV, raises immediate questions about the Flynn effect (FE). Does the traditional FE of points per decade in the U.S. for children and adults, identified for the Full Scale IQs of all Wechsler scales and for other global IQ scores as well, persist into the 2020s? The WAIS-5 Technical and Interpretive Manual provides two counterbalanced validity studies that address the Flynn effect directly—<i>N</i> = 186 adolescents and adults (16–90 years, mean age = 47.8) tested on the WAIS-IV and WAIS-5; and <i>N</i> = 98 16-year-olds tested on the WISC-V and WAIS-5. The FE is incorporated into the diagnostic criteria for intellectual disabilities by the American Association on Intellectual and Developmental Disabilities (AAIDD), by DSM-5-TR, and in capital punishment cases. The unexpected result of the two counterbalanced studies was a reduction in the Flynn effect from the expected value of 3 IQ points to 1.2 points. These findings raise interesting questions regarding whether the three point adjustment to FSIQs should be continued for intellectual disability diagnosis and whether the federal courts should rethink its guidelines for capital punishment cases and other instances of high stakes decision-making. Limitations include a lack of generalization to children, the impact of the practice effects, and a small sample size. |
| format | Article |
| id | doaj-art-47b229a461194b2b8d50cf3319273ca0 |
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| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-47b229a461194b2b8d50cf3319273ca02025-08-20T02:48:02ZengMDPI AGJournal of Intelligence2079-32002024-11-01121111810.3390/jintelligence12110118Wait, Where’s the Flynn Effect on the WAIS-5?Emily L. Winter0Sierra M. Trudel1Alan S. Kaufman2School of Health Sciences, Touro University, 3 Times Square, New York, NY 10036, USADepartment of Psychology, Marist College, 3399 North Road, Poughkeepsie, NY 12601, USANeag School of Education, University of Connecticut, Charles B. Gentry Building, 249 Glenbrook Road U-3064, Storrs, CT 06269, USAThe recent release of the WAIS-5, a decade and a half after its predecessor, the WAIS-IV, raises immediate questions about the Flynn effect (FE). Does the traditional FE of points per decade in the U.S. for children and adults, identified for the Full Scale IQs of all Wechsler scales and for other global IQ scores as well, persist into the 2020s? The WAIS-5 Technical and Interpretive Manual provides two counterbalanced validity studies that address the Flynn effect directly—<i>N</i> = 186 adolescents and adults (16–90 years, mean age = 47.8) tested on the WAIS-IV and WAIS-5; and <i>N</i> = 98 16-year-olds tested on the WISC-V and WAIS-5. The FE is incorporated into the diagnostic criteria for intellectual disabilities by the American Association on Intellectual and Developmental Disabilities (AAIDD), by DSM-5-TR, and in capital punishment cases. The unexpected result of the two counterbalanced studies was a reduction in the Flynn effect from the expected value of 3 IQ points to 1.2 points. These findings raise interesting questions regarding whether the three point adjustment to FSIQs should be continued for intellectual disability diagnosis and whether the federal courts should rethink its guidelines for capital punishment cases and other instances of high stakes decision-making. Limitations include a lack of generalization to children, the impact of the practice effects, and a small sample size.https://www.mdpi.com/2079-3200/12/11/118Flynn effectIQ testscognitive assessmentWechsler scalesWAIS-5WAIS-IV |
| spellingShingle | Emily L. Winter Sierra M. Trudel Alan S. Kaufman Wait, Where’s the Flynn Effect on the WAIS-5? Journal of Intelligence Flynn effect IQ tests cognitive assessment Wechsler scales WAIS-5 WAIS-IV |
| title | Wait, Where’s the Flynn Effect on the WAIS-5? |
| title_full | Wait, Where’s the Flynn Effect on the WAIS-5? |
| title_fullStr | Wait, Where’s the Flynn Effect on the WAIS-5? |
| title_full_unstemmed | Wait, Where’s the Flynn Effect on the WAIS-5? |
| title_short | Wait, Where’s the Flynn Effect on the WAIS-5? |
| title_sort | wait where s the flynn effect on the wais 5 |
| topic | Flynn effect IQ tests cognitive assessment Wechsler scales WAIS-5 WAIS-IV |
| url | https://www.mdpi.com/2079-3200/12/11/118 |
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