Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com), Millisecond
Created: January 12, 2026
Last Modified: January 12, 2026 by K. Borchert (katjab@millisecond.com), Millisecond
Script Copyright © Millisecond Software, LLC
The Neurobehavioral Symptom Inventory (NSI) is intended to measure postconcussion symptoms following traumatic brain injury (TBI). It was originally developed by Cicerone & Kalmar (1995) under the name "Post-Mild Traumatic Brain Injury (mTBI) Symptom Checklist" based on a structured interview version by Levin et al (1987). The scale was later renamed the NSI.
Cicerone, K. D., & Kalmar, K. (1995). Persistent postconcussion syndrome: The structure of subjective complaints after mild traumatic brain injury. Journal of Head Trauma Rehabilitation, 10(3), 1–17.
Levin, H. S., Mattis, S., Ruff, R. M., Eisenberg, H. M., Marshall, L. F., Tabaddor, K.… Frankowski, R. F. (1987). Neurobehavioral outcome following minor head injury: A three center study. Journal of Neurosurgery, 66, 234–243.
5 minutes
Self-report questionnaire with 22 5-point Likert Scale questions. Provides a cumulative total score.
File Name: nsi_summary*.iqdat
| Name | Description |
|---|---|
| inquisit.version | Inquisit version number |
| computer.platform | Device platform: win | mac |ios | android |
| computer.touch | 0 = device has no touchscreen capabilities; 1 = device has touchscreen capabilities |
| computer.hasKeyboard | 0 = no external keyboard detected; 1 = external keyboard detected |
| startDate | Date the session was run |
| startTime | Time the session was run |
| subjectId | Participant ID |
| groupId | Group number |
| sessionId | Session number |
| elapsedTime | Session duration in ms |
| completed | 0 = Test was not completed 1 = Test was completed |
| totalScore | Sum of all individual responses (Range: 0-88) |
File Name: nsi.iqdat
| Name | Description |
|---|---|
| date | Date the session was run |
| time | Time the session was run |
| subject | Participant ID |
| group | Group number |
| session | Session number |
| build | Inquisit version number |
| q*_response | Response given (in assigned values: 0-4) 0 = none 4 = very severe (no reversed scored items) |
| q*_latency | How much time in ms the participant spent on the surveyPage with this particular question (the last time this particular surveyPage was visited) |
The procedure can be adjusted by setting the following parameters.
| Name | Description | Default |
|---|---|---|
| timeFrame | The timeframe that participants should consider when answering the questions | "IN THE LAST 2 Weeks" |