Development and Validation of a Japanese Fidelity Scale for Supported Employment

  • Natsuki SasakiEmail author
  • Sosei Yamaguchi
  • Michiyo Shimodaira
  • Sayaka Sato
  • Ayano Taneda
  • Koji Yoshida
  • Junichiro Ito
Original Article


The Individual Placement and Support (IPS) model of supported employment is an evidence based practice. Although several agencies have been trying to implement the IPS-model since 2005 in Japan, there was no tool to assess the quality. This study developed a Japanese version of the 25-item Individualized Supported Employment Fidelity Scale (J-ISEF), a new Japanese fidelity tool for supported employment based on the IPS model. A working group consisting of researchers and practitioners was formed to develop J-ISEF based on IPS-25. Some experts of the group visited the community agencies in Vermont before the development process. Twenty-six eligible agencies were identified using snowball sampling, and 14 agencies of them agreed and participated at T1. We conducted three cross-sectional surveys (T1, T2 and T3), using the new scale. The first evaluation period (T1) was between September 2013 and February 2014, the second (T2) between September 2014 and February 2015, and the third (T3) between October 2015 and February 2016. High inter-rater reliability (ICC = 0.98 for the entire scale) was confirmed from T1 data. The total score and the service subscale total were positively correlated with employment rate (P < 0.05). A new fidelity scale, J-ISEF, is developed as a quality assessment tool for evidence-based supported employment programs in Japan. The evidence for its inter-rater reliability and criterion-related validity is promising.


Individual placement and support Supported employment Fidelity scale Development 



Intra-class correlation


Individual placement and support


Japanese version of the individualized supported employment fidelity scale


Randomized controlled trial



This study was funded by the Ministry of Health, Labour and Welfare in Japan (H23-001: A study on the model construction and the evaluation of community psychiatry to promote community lives, H26-002: A study on facilitating employment for people with mental illness, and H28-001: Policy research for improving the quality of community life of people with mental disorders), JSPS KAKENHI (Grant-in-Aid for Young Scientists [B], 16K21661: Development of Japanese version of IPS/Supported Employment Fidelity Scale and evaluation system). The funding sources had no involvement in decisions regarding study design, data collection, analysis, interpretation of data, or writing of the report.

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical Approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the ethical committee of the National Center of Neurology and Psychiatry and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed Consent

Informed consent was obtained from all agencies included in the study.

Supplementary material

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Supplementary material 1 (DOCX 50 KB)
10488_2017_825_MOESM2_ESM.docx (22 kb)
Supplementary material 2 (DOCX 21 KB)
10488_2017_825_MOESM3_ESM.docx (23 kb)
Supplementary material 3 (DOCX 22 KB)


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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Natsuki Sasaki
    • 1
    Email author
  • Sosei Yamaguchi
    • 1
  • Michiyo Shimodaira
    • 2
    • 3
  • Sayaka Sato
    • 1
  • Ayano Taneda
    • 1
  • Koji Yoshida
    • 4
  • Junichiro Ito
    • 1
    • 3
  1. 1.Department of Psychiatric Rehabilitation, National Institute of Mental HealthNational Center of Neurology and Psychiatry (NCNP)KodairaJapan
  2. 2.Department of Mental Health, School of MedicineThe University of TokyoTokyoJapan
  3. 3.Mental Health Clinic Si Puo FareIchikawaJapan
  4. 4.Department of Social Welfare, Faculty of Human and Social SciencesShowa Women’s UniversityTokyoJapan

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