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  2. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    There are three ways to count letter frequency that result in very different charts for common letters. The first method, used in the chart below, is to count letter frequency in lemmas of a dictionary. The lemma is the word in its canonical form. The second method is to include all word variants when counting, such as "abstracts", "abstracted ...

  3. Arithmomania - Wikipedia

    en.wikipedia.org/wiki/Arithmomania

    Arithmomania (from Greek arithmós, "number", and maníā, "compulsion") is a mental disorder that may be seen as an expression of obsessive–compulsive disorder (OCD). [1] Individuals experiencing this disorder have a strong need to count their actions or objects in their surroundings.

  4. Frequency analysis - Wikipedia

    en.wikipedia.org/wiki/Frequency_analysis

    A typical distribution of letters in English language text. Weak ciphers do not sufficiently mask the distribution, and this might be exploited by a cryptanalyst to read the message. In cryptanalysis, frequency analysis (also known as counting letters) is the study of the frequency of letters or groups of letters in a ciphertext.

  5. Primarily obsessional obsessive–compulsive disorder - Wikipedia

    en.wikipedia.org/wiki/Primarily_obsessional...

    The only diagnosis existing in DSM-5 is obsessive–compulsive disorder. [2] According to DSM-5 compulsions can be mental, but they are always repetitive actions like "praying, counting, repeating words silently". [28] DSM-5 does not have any information that searching an answer for some question can be associated with OCD. [29]

  6. List of mental disorders in the DSM-IV and DSM-IV-TR

    en.wikipedia.org/wiki/List_of_mental_disorders...

    This is a list of mental disorders as defined in the DSM-IV, the fourth edition of the Diagnostic and Statistical Manual of Mental Disorders.Published by the American Psychiatry Association (APA), it was released in May 1994, [1] superseding the DSM-III-R (1987).

  7. Mnemonic major system - Wikipedia

    en.wikipedia.org/wiki/Mnemonic_major_system

    The link is to the sound, not the letter. (For example, the letters C in "cat", "Cynthia", and "cello" each have different values in the system – 7, 0, and 6, respectively.) Vowels, semivowels and the consonant /h/ are ignored. These can be used as "fillers" to make sensible words from the resulting consonant sequences. A standard mapping [2] is:

  8. How John Green’s Own OCD Struggle Inspired ‘Turtles All the ...

    www.aol.com/entertainment/john-green-own-ocd...

    John Green is opening up about how his own lifelong battle with OCD inspired his 2017 novel, Turtles All the Way Down — and how he hopes Max’s new book-to-screen adaptation will help others in ...

  9. Missing letter effect - Wikipedia

    en.wikipedia.org/wiki/Missing_letter_effect

    The position of letters in words and the position of suffix morphemes have an influence on word identification, letter detection, and the missing letter effect in texts. [20] [21] [22] The letters at the start and end of words, or the first and last letter of a word, contribute to how people read and recognize words. [21]