“The usefulness of language derives in no small measure from the fact that it permits reference to a nonlinguistic world—to objects and events, to properties and relations, to all of the distinct phenomena of which perception informs us” (Lockhead & Pomerantz, 1991).
Psychology is a diverse, interdisciplinary field of research with a unique and rich vocabulary. In 2007, APA Books published the APA Dictionary of Psychology to help practitioners, researchers, students, and the public understand this science. (This dictionary, now in its second edition, includes almost 26,000 carefully vetted terms.)
The launch of the APA Books Blog provides a new opportunity to discuss and disseminate the lexicon of psychology, and thus we launch a regular feature—What Is… Wednesdays! Here, we will define and explore psychological terms, occasionally noting APA Books that interested readers may want to consult.
So, what of lexical uncertainty? The APA Dictionary of Psychology offers two descriptions: (a) “In logic, the type of uncertainty that arises from inherent imprecision of human language, and in particular from the attempt to describe and evaluate real-world situations using imprecise and often subjective linguistic categories” and (b) “in psycholinguistics, any uncertainty about the meaning of particular words experienced by or observable in language users.”
For more about lexical uncertainty, On the Consequences of Meaning Selection: Perspectives on Resolving Lexical Ambiguity is a great place to begin. The research in this book sheds light on how we decipher and comprehend ambiguous words.
Gorfein, D. S. (Ed.). (2002). On the consequences of meaning selection: Perspectives on resolving lexical ambiguity. Retrieved from http://www.apa.org/pubs/books/4318997.aspx
Lockhead, G. L., & Pomerantz, J. R. (1991). The perception of structure. Retrieved from http://www.apa.org/pubs/books/4318101.aspx>
VandenBos, G. R. (Ed.). (2007). APA dictionary of psychology. Retrieved from http://www.apa.org/pubs/books/4311007.aspx
The first two titles above are available through the PsycBOOKS database. (Students: Note that your library may provide you free access. Check your library’s resources and consult your librarian if you need help!)