A psychological study by Tamaoka and Murata (2001) suggested that CVCVCV-structured nonwords (e.g., /kohomo/) with the same vowel repeated showed longer naming latencies than the same-structured nonwords without vowel repetition (e.g., /kohami/). One of the possible factors for prolonging vowel repetition could be the frequency of vowel repetition in Japanese. Thus, the present study calculated...

Post-mortem measures of Abeta amyloid deposition correlate only weakly with cognitive dysfunction antemortem. We tested the hypothesis that functional reorganization forms a critical intermediary step between Abeta amyloid-associated brain injury and clinical disease expression. Fifteen patients with early-stage probable Alzheimer's disease (AD) and 16 cognitively intact controls participated i...

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Lexical-semantic variables (such as word frequency, imageability and age of acquisition) have been studied extensively in neuropsychology to address the structure of the word production system. The evidence available on this issue is still rather controversial, mainly because of the very complex interrelations between lexical-semantic variables. Moreover, it is not clear whether the results obt...

This study compared a semantic and a phonological/orthographic approach to the treatment of word-finding difficulties in a caseseries of ten individuals with aphasia, using a cross-over design. The study aims to investigate whether one approach is generally more effective than the other or whether the effectiveness of the two treatments relates systematically to the nature of the underlying fun...

The combined contributions of word age of acquisition (AoA) and word frequency (rated and objective) to word retrieval speed and accuracy were investigated, using a picture-naming paradigm. Results from two fully factorial studies revealed that both AoA and word frequency reliably facilitate the speed and accuracy of word retrieval. Furthermore, word frequency and AoA interacted across delay (0...

We derive a class of extended one-step methods of order m for solving delay-differential equations. This class includes methods of fourth and fifth order of accuracy. Also, the class of these methods depends on two free parameters. A convergence theorem and convergence factor of these methods are given. In addition, we investigate the stability properties of these methods. The results of the ar...

objective : the major objective of this study was to determine the means and 95% confidence interval of normal 6 years old children's motor-verbal skills. based on the results of this study we could develop a measure to diagnose abnormal motor skills. in addition, in this follow-up study, we compared the first-graders' motor-verbal skills to their own skills one year earlier. method: ...

background naming is a simple and basic skill of the language which involves semantic, lexical, and phonological levels. there are many different factors affecting the speed and convenience of naming. one of these factors is the word age of acquisition (aoa) and since language processing occurs at an extremely fast rate, psycholinguistics needs a method that has very good temporal resolution. t...