[Purpose] This study aimed to investigate the reproducibility and validity of the 50-m walking test. [Subjects] Reproducibility was investigated in 19 community-dwelling elderly women (mean age, 76.3 years), and validity was investigated in 31 community-dwelling elderly individuals (12 men and 19 women; mean age, 75.7 years). [Methods] The time taken to walk 50 m, the time taken to walk each 10...

The n-back task requires participants to decide whether each stimulus in a sequence matches the one that appeared n items ago. Although n-back has become a standard “executive” working memory (WM) measure in cognitive neuroscience, it has been subjected to few behavioral tests of construct validity. A combined experimental–correlational study tested the attention-control demands of verbal 2and ...

The time-tested BCS theory of superconductivity is generally accepted to be the correct theory of conventional superconductivity by physicists and, by extension, by the world at large. There are, however, an increasing number of ‘red flags’ that strongly suggest the possibility that BCS theory may be fundamentally flawed. An ever-growing number of superconductors are being classified as ‘unconv...

OBJECTIVES The aim of this study was to evaluate the reliability and validity of the the Chinese version of the Oral Health Impact Profile for TMDs (OHIP-TMDs-C). STUDY DESIGN The OHIP-TMDs was initially translated and cross-culturally adapted to Chinese following international guidelines; then subsequently validated for the psychometric characteristics of reliability and validity. In total, ...

Typology of Multiple Answer Questions for a Question-answering System The evaluation campaigns of question-answering systems are generally based on the validity of an individual answer supported by a passage (for a factual question) or a group of answers coming all from a same supporting passage (for a list question). This framework does not allow the possibily to answer with a set of answers, ...

BACKGROUND Measurement of disability in rheumatoid arthritis is often used to support treatment decisions and outcome assessments, but is used without reference to the impact of disability on individual patients. OBJECTIVE To develop and validate a scale to measure individual values for functions, which is used to weight the level of an individual patient's functional loss and thus calculate ...

OBJECTIVE To assess the reliability and validity of a cellular phone dependence questionnaire (CPDQ) we designed. METHODS The CPDQ, a 20-item self-rated scale, was given to 168 healthy female university students (mean age, 21.7 years). Each question uses a 0 to 3 response scale; a higher score indicates greater dependence. The reliability and validity of the CPDQ were assessed by an internal ...

Questionnaires for complex studies can grow to considerable sizes. Several hundred questions are not uncommon. In addition, routings are used to distinguish between question paths for different respondents. This leads to the question of how to ensure validity and other important properties. We examine this question for a case with even more demanding side conditions: An important part of the OE...