Cognitive Psychology, 2 nd Ed. Chapter 11 Language Production. Speech Production. 2-3 words per second with 3-12 dysfluencies per minute, using a vocabulary of 45,000 words. Errors can reveal processing units (“Easier for a camel to go through the knee of an ideal”). Speech Production.
variations in intonation and pauses. Consider the difference in normal speech and the slow rate, high pitch, and large intonation changes of “motherese.”