BDI-3: Do I need to administer all domains to get a Developmental Quotient?

Do I Need to Administer All Domains to Get a Developmental Quotient?

Overview

The BDI-3™ provides Developmental Quotients (DQ) for individual domains as well as an overall Total Score DQ. To receive a valid DQ score—either domain-specific or total—you must complete all relevant portions of the assessment.

Steps

1. Understanding DQ Scores

• A Developmental Quotient (DQ) is a standard score with a mean of 100 and a standard deviation of 15.

• DQ scores are available for each of the five developmental domains and as a Total DQ Score across all domains.

2. To Get a Domain-Specific DQ (e.g., Communication Domain):

• You must administer all subdomains within that domain that apply to the examinee’s age.

  • Example: To receive a Communication Domain DQ, you must administer both Receptive and Expressive subdomains.

3. To Get a BDI-3 Total Score DQ:

• You must administer all five developmental domains included in the BDI-3 Developmental Complete assessment.

Additional Notes

• Partial administration of a domain or the full battery will result in no DQ score being generated for that section.

• Always consult the age-appropriate guidelines in the manual to ensure full coverage.