HDI™

Interpretive Reports provide detailed information about scores from a single administration, presented both numerically and graphically. An individual's scores are compared to those in the normative sample and elevations at the scale and subscale level are indicated.

HDI–Self (HDI–S)

The HDI–S gathers information from the individual being assessed and provides scores for all the scales and subscales. It is used with individuals 14 years of age and older.

HDI–Parent (HDI–P)

The HDI–P gathers information from parents when the individual being assessed is between the ages of 4 and 19.

The HDI consists of a self-report form (HDI–S), a parent form (HDI–P), and a Background Information Questionnaire. The Background Information Questionnaire systematically collects important demographic information and medical/mental health history. All components are available in handscored and software formats. With the software format, you can instantly generate Interpretive Reports or Health Summary Reports.

In order to evaluate the reliability of the HDI, responses given by a sample of persons seeking outpatient mental health services were compared to those given by a sample of non-patients. The internal consistencies of the scales were computed using both Cronbach’s alpha coefficient and the split-half (Guttman) statistic. In addition, three sets of analyses were conducted to evaluate the validity of the items, scales, and subscales. Results indicated that HDI scales and subscales are both psychometrically reliable and valid. Scientific validation details and diverse case studies are provided in the HDI Technical Manual to show its application in a number of situations and contexts and to clarify the use of the HDI in practice.

The normative sample for the HDI included 2,161 patients and 1,574 non-patients.