Storkel, H. L. & Hoover, J. R. (2010). An on-line calculator to compute phonotactic probability and neighborhood density based on child corpora of spoken American English. Behavior Research Methods, 42(2), 497-506.
Enter 1 letter string (i.e., real word or nonsense) per line in the Text Input (Klattese) box. The letter string
represents the pronunciation of the word using a symbol convention referred to as Klatt.
Importantly, this symbol system uses special characters (such as @, ^) and is case-sensitive
(i.e., N is different than n).
Use the Choose Database selection box to use either a database based on the Hoosier Mental Lexicon (HML) or the Child Corpus.
The Select Ouput box allows customization of the output fiields displayed. Four fields are listed by default: Klatt, Word, Length, and Freq. Additional fields are selected by clicking items in the Select Output selection box. Multiple fields are selected by holding down the Ctrl or Shift key while clicking. Click the Select All button to choose all fields.
The Addone checkbox adds a 1 to the value of positional Segment Frequency and Biphone Frequency Sums. If the Addone checkbox is not checked the sums are formatted with a zero before the decimal point. The purpose of the 0 or the 1 is simply to make it easier to visually identify the sums.
Checking the Show Neighbors check box will cause the Neighbors results box to appear beneath the Phonotactic Probability and Density results box.
When you click on the Submit (or Select All) button, all calculations are performed and the output is
displayed in one or two text boxes. The results can easily be cut and pasted into another application.
Additional information about the output is available on the Output Format page.
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