Porch, B E <br/><br/>
Letter: The Porch Index of Communicative Ability (PICA): a psychometric problem and its solution. Comments.  [electronic resource] 

 -  The Journal of speech and hearing disorders  May 1974 
 - 226-7 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-4677 
<br/><br/><label>Standard No.: </label>10.1044/jshd.3902.226  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aphasia--diagnosis<br/>Communication<br/>Humans<br/>Nonverbal Communication<br/>Psychological Tests<br/>Psychometrics<br/>Verbal Behavior<br/>Writing