Development and application of cognitive-pragmatic language ability assessment protocol for traumatic brain injury

The study aim was to introduce a newly-developed multifaceted cognitive-pragmatic language assessment protocol. This study was also designed to assess the reliability and validity of the assessment protocol in the discrimination between mild traumatic brain injury (mTBI) and normal control. Individuals in this study were 25 to 64 years old. Ten mTBIs and twenty-two control group were recruited for the preliminary study. Their mean ages were 45.20 and 41.23, respectively. For the main study, we recruited 39 mTBIs and 100 healthy individuals whose mean ages were 44.67 and 40.84, respectively. The newly-developed protocol was completed through a systematic review based on an item analysis. We administered the CAPTBI based on nine domains, 22 subcategories, and 57 items. All nine domains of the CAPTBI were found to be significant variables by which mTBI individuals can be distinguished from normal individuals (p < .001). We also presented the cut-off points by education level to maximize the validity of differentiating the two groups. This study is the first attempt to evaluate mTBI by means of the cognitive-linguistic protocol with multiple domains. The CAPTBI is an appropriate tool for differentiating the cognitive-pragmatic language abilities between mTBI and control group.