The Development and Preliminary Validation of the Tower of Hanoi-Revised

@article{Welsh2001TheDA,
  title={The Development and Preliminary Validation of the Tower of Hanoi-Revised},
  author={Marilyn C. Welsh and M. Huizinga},
  journal={Assessment},
  year={2001},
  volume={8},
  pages={167 - 176}
}
The objective of this study was to redesign the Tower of Hanoi (TOH) in order to increase the reliability and explore the validity of the task. In order to achieve this goal, a two-phase process was undertaken. In Phase 1, the TOH item pool was enlarged from 12 items to 60 items, and the task was administered to a sample of college students (N = 81). The 22 most homogeneous items for the final task were identified based on the item-total correlations. In Phase 2, the rebuilt TOH (TOH-R) was… 
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Performance of Healthy, Older Adults on the Tower of London Revised: Associations with Verbal and Nonverbal Abilities
  • N. Zook, M. Welsh, Vanessa Ewing
  • Psychology, Medicine
    Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition
  • 2006
TLDR
It is suggested that performance on the TOL-R is a psychometrically sound executive function measure for older adults and that individual differences in fluid intelligence are more predictive of performance than chronological age.
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