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The Later Life Depression Knowledge Questionnaire (LLD-KQ): Development and Initial Validation.

Abigail J Laine¹, Kamila S White¹, Ann M Steffen¹

¹Department of Psychological Sciences, University of Missouri-St. Louis, St. Louis, Missouri, USA.

Clinical Gerontologist

|April 8, 2025

Summary

This summary is machine-generated.

This study developed the Later Life Depression Knowledge Questionnaire (LLD-KQ) to assess behavioral health providers' clinical knowledge. Initial findings support its validity for understanding expertise in later life depression.

Keywords:

Aging geriatric depression measurement

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Area of Science:

Gerontology
Psychiatry
Mental Health

Background:

Later life depression presents a significant mental health challenge.
Effective management requires specialized knowledge and skills from behavioral health providers.
Assessing this knowledge is crucial for improving care quality.

Purpose of the Study:

To develop and evaluate the initial validity of the Later Life Depression Knowledge Questionnaire (LLD-KQ).
To create a reliable measure for assessing clinical knowledge of later life depression among providers.

Main Methods:

Expert consultation with geropsychologists for domain identification and item generation.
Pre-testing of draft items with geropsychologists.
Administration of a survey to 300 master's-level social workers for item analysis, factor analysis, reliability, and validity testing.

Main Results:

A 25-item LLD-KQ was finalized, covering psychopathology, assessment/diagnosis, and treatment domains.
Confirmatory factor analysis supported a single-factor model over a three-factor model.
The LLD-KQ demonstrated initial internal consistency and construct validity.

Conclusions:

The LLD-KQ shows initial psychometric support as a measure of clinical knowledge in later life depression.
Further research is recommended to explore the scale's dimensionality.
The LLD-KQ has the potential to advance research on provider knowledge in mental health and aging.