31. However, researchers argue that young cotton-top tamarins are able to represent semantic information regardless of immature speech production . 32. Kasper and Faerch proposed a model of speech production that involved a planning phase and a production phase. 33. The motor aspects of speech production deficits caused by damage to Broca s area are known as expressive aphasia. 34. The development of techniques to improve the available vocabulary and rate of speech production is an active research area. 35. Speech is researched in terms of the speech production and speech perception of the sounds used in vocal language. 36. Speech agnosia is known as an incapability to comprehend spoken words despite intact hearing, speech production , and reading ability. 37. Furthermore, the amount of pointing at 12 months old predicts speech production and comprehension rates at 24 months old. 38. Together these studies show how the LRP has helped map out the temporal order of information processing during speech production . 39. Then there is the early speech production stage, which will not occur until the student can organize around 500 words. 40. Whalen studies the relationship between speech production and speech perception from the perspective of the motor theory of speech perception.
