There are four main methods of speech delivery: impromptu, extemporaneous, manuscript, and memorized
Impromptu speaking involves delivering a message on the spur of the moment, without advance preparation
Extemporaneous speaking consists of delivering a carefully planned and rehearsed speech in a conversational manner using brief notes
Manuscript speaking is the word-for-word iteration of a written message, where the speaker maintains attention on the printed page except when using visual aids
Memorized speaking is the rote recitation of a written message that the speaker has committed to memory
Impromptu speaking is spontaneous and responsive, but may result in a disorganized message due to lack of contemplation
Extemporaneous speaking promotes the speaker as knowledgeable and credible, but requires a great deal of preparation for both verbal and nonverbal components
Manuscript speaking ensures exact repetition of original words, but can be uninteresting and precludes eye contact with the audience
Memorized speaking allows the speaker to maintain eye contact and move freely, but can lead to a flat and uninteresting delivery if vocal cues and gestures are not planned and memorized