Perhaps, as some have argued, perceiving speech involves perceiving articulatory gestures or movements of the mouth and vocal organs (see the supplement on Speech Perception: Empirical and Theoretical Considerations).
On the other hand, it has been argued that speech output, being in the auditory modality, may not be compatible with the processing preferences of learners with autism.
Tallal (1980) argued that speech perception problems in children with RD or SLI are due to the rapidly changing acoustic spectra involved.
Though it can be argued that speech perception without noise is actually the exception rather than the norm in everyday life (D'Ausilio et al. 2012), it has been claimed that motor influences on speech perception might disappear when stimuli are not overlaid with noise (Rogalsky et al. 2011).
He has argued in speeches and media interviews that China's economic progress threatens to stall without systemic reforms, including an independent judiciary, greater oversight of government by the press and improvements in China's sharply limited form of elections.
We should ignore the claims that speech should be restricted because it causes offence, Phillips argues; only speech that incites violence should be prohibited.
While traditional theories said speech output was put together sound by sound, the two academics developed an alternative model, arguing that speech in fact depends on plans stored in our brains for words and whole phrases.
In this perspective, one could furthermore argue that speech sound discrimination based on purely acoustic features requires more resources and is more exhausting than "normal" speech sound discrimination; this could be suggested as one reason why aphasic subjects often report that listening to language is fatiguing (cf. [ 44]).
Some researchers who hold that intended or actual gestures are the best candidates for the objects of phoneme perception argue that speech perception therefore is special.
Roy Greenslade, professor of journalism at City University London, is one such person and wrote an opinion piece arguing "Free speech should provoke.
