Short-form Philadelphia naming test: rationale and empirical evaluation

Area of Science:

• Neuroscience
• Psycholinguistics
• Clinical Psychology

Background:

• Anomia, a common symptom of aphasia, significantly impacts communication.
• The Philadelphia Naming Test (PNT) is a standard tool for assessing anomia.
• Developing shorter, reliable versions of the PNT is crucial for efficient clinical assessment.

Purpose of the Study:

• To create two matched short forms of the Philadelphia Naming Test (PNT).
• To ensure these short forms yield results comparable to the full PNT for anomia measurement.
• To provide validated tools for tracking changes in naming abilities.

Main Methods:

• Study 1: Identified PNT items for short forms using archived data from 94 individuals with aphasia.
• Validated two 30-item sets (PNT30-A, PNT30-B) with data from 56 additional individuals.
• Study 2: Assessed the reliability of the full PNT and short forms across independent administrations in 25 individuals with aphasia.

Main Results:

• In Study 1, PNT30-A and PNT30-B demonstrated internal consistency and high correlation with full PNT scores.
• In Study 2, PNT accuracy was highly reliable over a one-week period.
• Independent administrations of PNT30-A and PNT30-B yielded results similar to the full PNT and each other.

Conclusions:

• The developed short forms (PNT30-A, PNT30-B) reliably estimate performance on the full Philadelphia Naming Test.
• These short forms allow for comparison with established PNT norms.
• The matched tests facilitate the reliable measurement of changes in an individual's naming ability, crucial for tracking treatment efficacy.