English HQ-25 User Agreement
Corresponding Author: Alan R. Teo
Institution: VA Portland Health Care System and Oregon Health and Science University 
Contact Info: teoa@ohsu.edu

The English HQ-25 is available for use free of charge by those agreeing to the following terms:
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Email *
Please provide your full name. *
Institution *
Department *
City and country *
1. I understand that the HQ-25 has only been validated as a self-administered instrument to assess severity of hikikomori symptoms over the preceding 6 months. Other uses have not been validated. *
2. I agree to contact the measure's authors regarding interest in other uses of the measure. *
3. I agree not to use the measure for financial profit. *
4. I agree not to distribute the measure to others outside of my research group or organization. *
5. I agree to cite the main results of the manuscript listed below when describing the measure or its use in publications or other media: *
Teo AR, Chen CI, Kubo H, Katsuki R, Sato-Kasai M, Shimokawa N, Hayakawa K, Umene-Nakano W, Aikens JE, Kanba S, Kato TA. Development and validation of the 25-item Hikikomori Questionnaire (HQ-25). Psychiatry Clin Neurosci. 2018 Oct, 72(10):780-788. doi: 10.1111/pcn.12691. PMID: 29926525.
6. I agree to notify the HQ-25 authors of any publications related to the use of the HQ-25. *
7. What is the primary reason(s) you are interested in the HQ-25? *
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