Neutropic keeps a registry of validated questionnaires so that the same facts appear everywhere: the study-design report names the instrument with its source and licence, score_instrument applies the published scoring (reverse-keyed items, subscales, multipliers, prorating, cut-off bands) and reports the in-sample α next to the published α, the manuscript's Methods cites the original source, and the peer-review guideline check flags an instrument used without a citation.
Ask "what is in the instrument registry?" or "look up the PSS-10" in any chat, or run /survey on your data. Instruments marked manual (PSQI, IPAQ-SF, AttrakDiff, IPQ) need their published algorithm or item map; the agent follows the registry's instructions in code. Cut-offs marked informal are conventions, not diagnostic thresholds. Licence status is a pointer, not legal advice — check the holder's terms before reproducing items.
Mental health
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| PHQ-9 — Patient Health Questionnaire-9 | 9 · 0–3 | sum; range 0–27 | 0–4 minimal; 5–9 mild; 10–14 moderate; 15–19 moderately severe; 20–27 severe | Kroenke, K., Spitzer, R. L., & Williams, J. B. W. (2001) | free | Han, C., Jo, S. A., Kwak, J.-H., et al. (2008) |
| PHQ-2 — Patient Health Questionnaire-2 | 2 · 0–3 | sum; range 0–6 | 0–2 negative screen; 3–6 positive screen | Kroenke, K., Spitzer, R. L., & Williams, J. B. W. (2003) | free | — |
| GAD-7 — Generalized Anxiety Disorder-7 | 7 · 0–3 | sum; range 0–21 | 0–4 minimal; 5–9 mild; 10–14 moderate; 15–21 severe | Spitzer, R. L., Kroenke, K., Williams, J. B. W., & Löwe, B. (2006) | free | Seo, J.-G., & Park, S.-P. (2015) |
| DASS-21 — Depression Anxiety Stress Scales (21-item) | 21 · 0–3 | sum; × 2; 3 subscales; range 0–42 | (Depression) 0–9 normal; 10–13 mild; 14–20 moderate; 21–27 severe; 28–42 extremely severe … | Lovibond, P. F., & Lovibond, S. H. (1995)00075-U) | free | — |
| CES-D — Center for Epidemiologic Studies Depression Scale | 20 · 0–3 | sum; R: 4,8,12,16; range 0–60 | 0–15 below screening threshold; 16–60 possible depression (≥16) | Radloff, L. S. (1977) | free | Cho, M. J., & Kim, K. H. (1998) |
| K10 — Kessler Psychological Distress Scale (10-item) | 10 · 1–5 | sum; range 10–50 | 10–19 likely to be well; 20–24 mild distress; 25–29 moderate distress; 30–50 severe distress | Kessler, R. C., Andrews, G., Colpe, L. J., et al. (2002) | free | — |
| BDI-II — Beck Depression Inventory-II | 21 · 0–3 | sum; range 0–63 | 0–13 minimal; 14–19 mild; 20–28 moderate; 29–63 severe | Beck, A. T., Steer, R. A., & Brown, G. K. (1996) | commercial | Sung, H. M., Kim, J. B., Park, Y. N., Bai, D. S., Lee, S. H., & Ahn, H. N. (2008) |
| STAI (Form Y) — State-Trait Anxiety Inventory, Form Y | 40 · 1–4 | sum; R: 1,2,5,8,10,11,15,16,19,20,21,23,26,27,30,33,34,36,39; 2 subscales; range 20–80 | 20–37 low (informal); 38–44 moderate (informal); 45–80 high (informal) | Spielberger, C. D., Gorsuch, R. L., Lushene, R., Vagg, P. R., & Jacobs, G. A. (1983) | commercial | Hahn, D.-W., Lee, C.-H., & Chon, K.-K. (1996) |
| PCL-5 — PTSD Checklist for DSM-5 | 20 · 0–4 | sum; 4 subscales; range 0–80 | 0–30 below provisional PTSD threshold; 31–80 probable PTSD (≥31–33) | Weathers, F. W., Litz, B. T., Keane, T. M., Palmieri, P. A., Marx, B. P., & Schnurr, P. P. (2013) | free | — |
| IES-R — Impact of Event Scale – Revised | 22 · 0–4 | sum; 3 subscales; range 0–88 | 0–23 below clinical concern (total); 24–32 clinical concern; 33–36 probable PTSD (≥33); 37–88 severe — may suppress immune function | Weiss, D. S., & Marmar, C. R. (1997) | free | Lim, H.-K., Woo, J.-M., Kim, T.-S., et al. (2009) |
Stress
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| PSS-10 — Perceived Stress Scale (10-item) | 10 · 0–4 | sum; R: 4,5,7,8; range 0–40 | 0–13 low (informal); 14–26 moderate (informal); 27–40 high (informal) | Cohen, S., Kamarck, T., & Mermelstein, R. (1983) | free | Lee, J., Shin, C., Ko, Y.-H., et al. (2012) |
Affect and emotion regulation
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| PANAS — Positive and Negative Affect Schedule | 20 · 1–5 | sum; 2 subscales; range 10–50 | — | Watson, D., Clark, L. A., & Tellegen, A. (1988) | free | Lee, H.-H., Kim, E.-J., & Lee, M.-K. (2003) |
| ERQ — Emotion Regulation Questionnaire | 10 · 1–7 | mean; 2 subscales; range 1–7 | — | Gross, J. J., & John, O. P. (2003) | free | — |
Well-being
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| SWLS — Satisfaction With Life Scale | 5 · 1–7 | sum; range 5–35 | 5–9 extremely dissatisfied; 10–14 dissatisfied; 15–19 slightly dissatisfied; 20 neutral; 21–25 slightly satisfied; 26–30 satisfied; 31–35 extremely satisfied | Diener, E., Emmons, R. A., Larsen, R. J., & Griffin, S. (1985) | free | — |
| WHO-5 — WHO-5 Well-Being Index | 5 · 0–5 | sum; × 4; range 0–100 | 0–28 likely depression — assess further; 29–50 poor well-being; 51–100 well-being not reduced | Topp, C. W., Østergaard, S. D., Søndergaard, S., & Bech, P. (2015) | free | — |
| SHS — Subjective Happiness Scale | 4 · 1–7 | mean; R: 4; range 1–7 | — | Lyubomirsky, S., & Lepper, H. S. (1999) | free | — |
| FS — Flourishing Scale | 8 · 1–7 | sum; range 8–56 | — | Diener, E., Wirtz, D., Tov, W., Kim-Prieto, C., Choi, D., Oishi, S., & Biswas-Diener, R. (2010) | free | — |
| WEMWBS — Warwick-Edinburgh Mental Well-being Scale | 14 · 1–5 | sum; range 14–70 | — | Tennant, R., Hiller, L., Fishwick, R., et al. (2007) | permission required | — |
Sleep
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| PSQI — Pittsburgh Sleep Quality Index | 19 · 0–3 | manual; 7 subscales; range 0–21 | 0–5 good sleeper; 6–21 poor sleeper | Buysse, D. J., Reynolds, C. F., Monk, T. H., Berman, S. R., & Kupfer, D. J. (1989)90047-4) | free | Sohn, S. I., Kim, D. H., Lee, M. Y., & Cho, Y. W. (2012) |
| ISI — Insomnia Severity Index | 7 · 0–4 | sum; range 0–28 | 0–7 no clinically significant insomnia; 8–14 subthreshold insomnia; 15–21 moderate clinical insomnia; 22–28 severe clinical insomnia | Bastien, C. H., Vallières, A., & Morin, C. M. (2001)00065-4) | permission required | Cho, Y. W., Song, M. L., & Morin, C. M. (2014) |
| ESS — Epworth Sleepiness Scale | 8 · 0–3 | sum; range 0–24 | 0–10 normal daytime sleepiness; 11–12 mild excessive sleepiness; 13–15 moderate excessive sleepiness; 16–24 severe excessive sleepiness | Johns, M. W. (1991) | permission required | Cho, Y. W., Lee, J. H., Son, H. K., Lee, S. H., Shin, C., & Johns, M. W. (2011) |
Self, mindfulness and resilience
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| RSES — Rosenberg Self-Esteem Scale | 10 · 0–3 | sum; R: 3,5,8,9,10; range 0–30 | 0–14 low (informal, <15); 15–25 normal range (informal); 26–30 high (informal) | Rosenberg, M. (1965) | free | Jon, B.-J. (1974) |
| GSE — General Self-Efficacy Scale | 10 · 1–4 | sum; range 10–40 | — | Schwarzer, R., & Jerusalem, M. (1995) | free | — |
| MAAS — Mindful Attention Awareness Scale | 15 · 1–6 | mean; range 1–6 | — | Brown, K. W., & Ryan, R. M. (2003) | free | — |
| CD-RISC-10 — Connor-Davidson Resilience Scale (10-item) | 10 · 0–4 | sum; range 0–40 | — | Campbell-Sills, L., & Stein, M. B. (2007) | permission required | Baek, H.-S., Lee, K.-U., Joo, E.-J., Lee, M.-Y., & Choi, K.-S. (2010) |
Social
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| UCLA-3 — UCLA Loneliness Scale (Version 3) | 20 · 1–4 | sum; R: 1,5,6,9,10,15,16,19,20; range 20–80 | — | Russell, D. W. (1996) | free | — |
| UCLA-3 (3-item) — Three-Item Loneliness Scale | 3 · 1–3 | sum; range 3–9 | 3–5 not lonely (conventional); 6–9 lonely (conventional, ≥6) | Hughes, M. E., Waite, L. J., Hawkley, L. C., & Cacioppo, J. T. (2004) | free | — |
Work
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| MBI-HSS — Maslach Burnout Inventory – Human Services Survey | 22 · 0–6 | sum; 3 subscales | — | Maslach, C., & Jackson, S. E. (1981) | commercial | — |
Health behaviour
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| AUDIT — Alcohol Use Disorders Identification Test | 10 · 0–4 | sum; range 0–40 | 0–7 low risk; 8–15 hazardous (brief advice); 16–19 harmful (brief counselling); 20–40 possible dependence (refer) | Saunders, J. B., Aasland, O. G., Babor, T. F., de la Fuente, J. R., & Grant, M. (1993) | free | Lee, B. O., Lee, C. H., Lee, P. G., Choi, M. J., & Namkoong, K. (2000) |
| IPAQ-SF — International Physical Activity Questionnaire – Short Form | 7 | manual | — | Craig, C. L., Marshall, A. L., Sjöström, M., et al. (2003) | free | Oh, J. Y., Yang, Y. J., Kim, B. S., & Kang, J. H. (2007) |
Personality
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| BFI-2 — Big Five Inventory-2 | 60 · 1–5 | mean; R: 3,4,5,8,9,11,12,16,17,22,23,24,25,26,28,29,30,31,36,37,42,44,45,47,48,49,50,51,55,58; 5 subscales; range 1–5 | — | Soto, C. J., & John, O. P. (2017) | free | — |
| BFI-10 — Big Five Inventory-10 | 10 · 1–5 | mean; R: 1,3,4,5,7; 5 subscales; range 1–5 | — | Rammstedt, B., & John, O. P. (2007) | free | — |
| TIPI — Ten-Item Personality Inventory | 10 · 1–7 | mean; R: 2,4,6,8,10; 5 subscales; range 1–7 | — | Gosling, S. D., Rentfrow, P. J., & Swann, W. B., Jr. (2003)00046-1) | free | — |
Usability and UX
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| SUS — System Usability Scale | 10 · 1–5 | sus tool; range 0–100 | 80.3–100 A; 74–80.29 B; 68–73.99 C; 51–67.99 D; 0–50.99 F | Brooke, J. (1996) | free | — |
| UEQ — User Experience Questionnaire | 26 · -3–3 | ueq tool; 6 subscales; range -3–3 | — | Laugwitz, B., Held, T., & Schrepp, M. (2008) | free | — |
| UMUX-LITE — Usability Metric for User Experience – Lite | 2 · 1–7 | formula; range 0–100 | — | Lewis, J. R., Utesch, B. S., & Maher, D. E. (2013) | free | — |
| SEQ — Single Ease Question | 1 · 1–7 | mean; range 1–7 | — | Sauro, J., & Dumas, J. S. (2009) | free | — |
| PSSUQ (v3) — Post-Study System Usability Questionnaire, version 3 | 16 · 1–7 | mean; 3 subscales; range 1–7 | — | Lewis, J. R. (2002) | free | — |
| AttrakDiff — AttrakDiff | 28 · -3–3 | manual; 4 subscales; range -3–3 | — | Hassenzahl, M., Burmester, M., & Koller, F. (2003) | free | — |
| NPS — Net Promoter Score | 1 · 0–10 | formula; range -100–100 | — | Reichheld, F. F. (2003) | free | — |
Workload
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| NASA-TLX — NASA Task Load Index | 6 · 0–100 | nasa_tlx tool; range 0–100 | — | Hart, S. G., & Staveland, L. E. (1988)62386-9) | free | — |
HCI, VR and robots
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| Trust in Automation (Jian) — Trust between People and Automation scale | 12 · 1–7 | mean; R: 1,2,3,4,5; range 1–7 | — | Jian, J.-Y., Bisantz, A. M., & Drury, C. G. (2000) | free | — |
| IPQ — igroup Presence Questionnaire | 14 · -3–3 | manual; 4 subscales; range -3–3 | — | Schubert, T., Friedmann, F., & Regenbrecht, H. (2001) | free | — |
| SSQ — Simulator Sickness Questionnaire | 16 · 0–3 | formula; 3 subscales | — | Kennedy, R. S., Lane, N. E., Berbaum, K. S., & Lilienthal, M. G. (1993) | free | — |
| Godspeed — Godspeed Questionnaire Series | 24 · 1–5 | mean; 5 subscales; range 1–5 | — | Bartneck, C., Kulić, D., Croft, E., & Zoghbi, S. (2009) | free | — |
| TAM (PU · PEOU) — Technology Acceptance Model scales: Perceived Usefulness and Perceived Ease of Use | 12 · 1–7 | mean; 2 subscales; range 1–7 | — | Davis, F. D. (1989) | free | — |
Emotion engineering
| Instrument | Items · response | Scoring | Cut-offs | Source | Licence | Korean version |
|---|---|---|---|---|---|---|
| SAM — Self-Assessment Manikin | 3 · 1–9 | mean; 3 subscales; range 1–9 | — | Bradley, M. M., & Lang, P. J. (1994)90063-9) | free | — |
Sources were entered from the original publications and every DOI was checked against Crossref on 2026-10-16.