For instance, some users find it easier to write a first draft with dictation.
Dictation can be used in combination with keyboarding. A headset microphone with a mute switch prevents the software from listening while the user “thinks out loud” to hear how their writing sounds. Dictation users may find it helpful to first verbally compose what they want to say and then dictate. An outline helps with organization and reminds the writer of what to say next. When people dictate, they can sometimes lose track of what they’re writing about. It may help users to start with an outline before writing with dictation. For example, to delete the previous sentence, the user might have to say “select previous” and “delete that.” To move the cursor, the user might have to say “move backwards 10 words.” Or to start a new paragraph, they might have to say “new paragraph.” A cheat sheet of common commands can help. It requires the use of special verbal commands. Editing or navigating a document with dictation can be hard. 
While people who have slow processing speed or struggle with working memory may benefit from dictation in other ways, they may have trouble saying large groups of words at a time.
In general, dictation is more accurate if users say whole phrases and sentences, not just individual words. (Punctuation can also be entered with a keyboard.) For example, the user may need to say “period” or “question mark” at the end of a sentence. While dictating sentences, users have to say the punctuation mark. This may pose a challenge for users who struggle with spoken language. If the user mumbles, mispronounces words, or slurs words together, the dictated text might not be correct. 
They also need to pronounce words correctly.
When dictating, users need to speak clearly, at a steady rhythm and speed.
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