Philadelphia Naming Test (PNT)
A 175-item picture-naming test that characterizes naming ability and error patterns.
By Claire White
- Clinician-administered; typically 30 to 40 minutes.
- 175 black-and-white line drawings presented one at a time.
- Scored as percentage correct, plus an error-type analysis.
What it measures
The PNT presents 175 line drawings spanning a range of frequencies, and records the person’s spoken name for each. Responses are scored as correct or analyzed by error type: semantic, phonological, unrelated, or no response. The error analysis helps clinicians understand the nature of the naming deficit and plan treatment.
What the result tells you
The percentage of items named correctly (0 to 100%) reflects naming severity. Error-type profiles guide treatment: semantic errors suggest access-level problems, while phonological errors suggest retrieval and output problems. The PNT is sensitive to change and widely used in treatment research.
Used for
Evidence, psychometrics and provenance
Psychometrics
Reliability scale from 0 to 1. Higher indicates greater agreement.
- Alternate forms
- Two matched versions for repeated testing
References
- 1.Roach A, Schwartz MF, Martin N, et al. The Philadelphia Naming Test: scoring and rationale. Clin Aphasiol. 1996;24:121-133.
This assessment uses a validated instrument and is reference information, not a diagnosis.