The Development and Validation of a Dimensional Childhood Adversity Measure

Area of Science:

• Psychology
• Developmental Psychology
• Psychometrics

Background:

• Research on early adversity's developmental impact is expanding.
• Existing childhood adversity measures lack comprehensive assessment and psychometric validation.
• Evolving theoretical models require updated measurement tools.

Purpose of the Study:

• To develop and validate the Deprivation and Threat-Adult Self-report (DT-AS) measure.
• To create a psychometrically sound scale for assessing childhood threat and deprivation exposure.
• To provide a robust tool for examining links between childhood adversity and adult psychopathology.

Main Methods:

• Psychometric analysis of a total sample (N=796) across multiple waves.
• Classical Test Theory (CTT) and Item Response Theory (IRT) applied to pilot data (n1=210, n2=208) for item refinement.
• Final sample (n3=378) used to confirm the factor structure and psychometric properties of the DT-AS.

Main Results:

• The Deprivation and Threat-Adult Self-report (DT-AS) was developed, comprising 33 items for threat and 30 for deprivation.
• A correlated factor structure of threat and deprivation was confirmed in the final sample.
• The DT-AS demonstrated excellent psychometric properties, indicating its reliability and validity.

Conclusions:

• The DT-AS is a psychometrically sound measure for assessing childhood deprivation and threat.
• This validated scale offers a robust tool for future research on developmental consequences of early adversity.
• The DT-AS facilitates a deeper understanding of the relationship between childhood adversity and adult mental health outcomes.