The Moss Aphasia Psycholinguistic Project Database gives researchers access to experimental behavioral data from Aphasia patients. The web database represents years of data collection from patients who exhibited language impairments secondary to chronic left hemisphere stroke. Most were recruited to the research program at Moss Rehabilitation Research Institute (MRRI).

The core of the database is individual-trial performance data from picture naming. Picture naming is a primary test of lexical processing. The task taps a critical juncture in the language system because naming mediates between high-level conceptual and syntactic processing and low-level phonological processing. Difficulty in this task is present to varying degrees in nearly all aphasic individuals.

This site allows researchers to search through naming data from 178 patients. Searches can narrow in on data subsets based on patient characteristics (e.g. time since aphasia onset, clinical diagnosis), stimulus characteristics (e.g. semantic category, lexical frequency) and task performance (e.g. error type). The data available on this site can be used to test hypotheses about naming impairment and aphasic impairment generally. Once the basic analysis tools of the site are exhausted, users can export the raw data for further analysis and visualization

Credits

MAPPD was created at the Moss Aphasia Center at the Moss Rehabilitation Research Institute (MRRI), in Philadelphia. Dr. Daniel Mirman is the project lead. Dr. Myrna Schwartz is Associate Director of MRRI. Other project contributors are Dr. Stephen Faha, Grant  Walker, Adelyn Brecher, Paula Sobel, Gary Dell, and Ted Strauss. 

Citing

Please use the following citation in publications: 

A large, searchable, web-based database of aphasic performance on picture naming and other tests of cognitive function. (submitted) Daniel Mirman, Ted J. Strauss, Adelyn Brecher, Grant M. Walker, Paula Sobel, Gary S. Dell, Myrna F. Schwartz.

Bug reporting

If you are having a problem with the site and wish to report a bug, please do so here. You can also make feature requests or send in miscellaneous comments from that page.