Developing the Nisonger Child Behavior Rating Form 2: Self report form using a Delphi process

Although there are many rating forms to assess mental health symptoms, only a few are developed for people with intellectual disability or developmental disabilities (ID/DD). In addition, most measures that are available rely exclusively on reports from an informant (e.g., caregiver, teacher), not on the direct input from the individual with ID/DD. The current study aimed to develop a self-report version of the Nisonger Child Behavior Rating Form - 2 (NCBRF-2). The development of the NCBRF-2 self-report scale involved two phases: 1) the expert panel survey using the Delphi process, and 2) the cognitive testing with the youth with intellectual disability. The current paper describes the first phase of the development.

Using the Delphi process, a total of 21 experts completed four rounds of surveys and provided feedback to adapt the NCBRF-2: Parent Scale into the NCBRF-2: Self-Report Scale. As a result of the Delphi process, all five domains from the NCBRF-2: Parent Scale were retained in the NCBRF-2: Self-Report Scale.

A total of 17 item stems were revised based on the expert panel members' feedback. The implications and limitations of the current Delphi process are discussed.