The Predictive Cluttering Inventory (PCI) by David Daly (2006)

The ICA is grateful to be able to post the PCI as a clinical resource for your clinical practice, teaching, or research.

IMPORTANT REMINDER regarding the use of the PCI: 

The PCI gives a first indication whether or not cluttering may be present. The PCI alone does not qualify as an evaluation instrument. If the scores result in suspected cluttering, then an in-depth diagnostic battery needs to be performed (more information about this under "Cluttering Assessment").

A revised version of the PCI (PCI-revised) has been published by Van Zaalen op't Hof, Wijnen & De Jonckere (2009) in the article "Differential diagnostic characteristics between cluttering and stuttering—Part one" in  Journal of Fluency Disorders, 34(3), 137–154. 

Instructions:

The Predictive Cluttering Inventory (PCI) is a frequently used, and helpful, tool for assisting clinicians in making differential diagnostic discriminations among (1) people who clutter, (2) people who both clutter and stutter, and (3) those who do not have a fluency problem like stuttering or cluttering. The following scoring instructions were provided by Dr. Daly. Please note that the scoring of the current version (2006) differs somewhat from that of previous versions of this instrument.

Scoring:

Since presenting the PCI in Ireland at the 2006 International Fluency Association Conference, Dr. Daly has changed the criteria for scoring to a 7-point scale (0 through 6).  Thus,  if every one of the 33 items were checked a 6,  the total score would be 198.  

Interpretation:

Preliminary data suggest that a score of 120+  indicates a diagnosis of cluttering.  

Scores between 80 and 120  indicate a diagnosis of cluttering-stuttering. 

 Of course, the specific items checked also are important.

Please note that The Predictive Cluttering Inventory is preliminary and has not yet been subjected to empirical examination for validity or reliability. Also it is designed specifically to differentiate people who (predominantly) clutter, clutter and stutter, and those who neither clutter nor stutter. Thus, other fluency disorders are not covered by this instrument.

Further Research:

Research in the aforementioned aspects of the PCI is welcome and encouraged. Additional data on more individuals suspected of cluttering are necessary to produce an accurate, valid, and reliable scoring system. If you are interested in further research, contact the ICA at icacluttering@gmail.com

Translations for the following languages are available: 

*Please note that the Dutch version is using a 5 point scale and contains some revisions, so the instructions above for scoring and interpretation do not apply!

For Polish, the PCI and instructions in Polish are downloadable (two separate links)

For Taiwanese, the PCI and the Taiwanese Cluttering Checklist are available (two separate links)