Related Experiment Video
Updated: Dec 10, 2025
Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
Published on: June 25, 2019
[Validity Study of the Cookie Theft Picture Test - Early Detection of Dementia Based on Linguistic Abnormalities]
Sonja Radjenovic1, Martin Voracek1, Georg Adler2
1Institut für Psychologische Grundlagenforschung und Forschungsmethoden, Fakultät für Psychologie, Universität Wien, Österreich.
Objective:
Previous studies have provided inconsistent results regarding discriminatory language variables between subjects with dementia and healthy controls. In this study, using the Cookie Theft Picture Test (CTP), selected language variables are tested for predicting actual diagnoses.
Methods:
24 healthy subjects and 24 subjects with mild dementia were included in the present study.
Results:
All language variables except repetitions, word finding difficulties and paraphasias showed significant differences between the groups. The variables pause length and clues increase significantly the likelihood of AD, while the variable sentence length decreases it.
Conclusion:
Due to the small sample size and insufficient standardization, the study can only be interpreted to a limited extent. Nevertheless, the results indicate that the CTP appears to be suitable for practical use.
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