Coders are trained and tested for reliability of classification by The Family Relations Institute.
Eight assessments are taught and have authorized coders:
- Infant CARE-Index
- Toddler CARE-Index
- Infant Strange Situation (SSP)
- Preschool Assessment of Attachment (PAA)
- School-age Assessment of Attachment (SAA)
- Transition to Adulthood Assessment of Attachment (TAAI)
- Adult Attachment Interview (DMM-AAI)
- Parents Interview (PI)
Reliability is graded on four levels with only coders who achieve Levels I and II being suitable for court applications. All coders who achieve reliability are given a dated Certificate of Reliability; the certificate is a pdf that should be provided to the court as evidence of the coder's qualification to provide evidence on attachment.
Coders with Level I provide classifications with a 15% error rate on assessments used in court proceedings. This is the standard deemed suitable for person-specific decision-making.
Coders with Level II provide classifications with an 20% error rate on normative and clinical assessments, but not assessments of individuals in child care court proceedings.
Coders who have taken courses on more than one assessment tend to provide a fuller understanding of the assessments on which they are reliable. Coders who are reliable on several assessments tend to provide the best understanding of the meaning of the assessments.
Coders should both provide their certificate(s) of reliability to the court and, in their reports, acknowledge the error rate implied by their authorization.