Tuesday, December 01, 2009

Research byte: Ga (auditory sound processing) and cognitive development: Auditory scaffolding hypothosis

I ran across this very interest article in one of my favorite journals for short and concise up-to-date summaries of contemporary cognitive research.  Given the apparent role of temporal and serial processing in mental timing behavior (IQ Brain Clock), it reinforces the notion that auditory processing (Ga) is a primary and important cognitive mechanism for intellectual and cognitive growth.....according to these authors, vis-a-vis providing a bootstrap or scaffolding mechanism for the development of critical cognitive functions.

Conway,C.  Pisoni, D., & Kronenberger, W. (2009). The Importance of Sound for Cognitive Sequencing Abilities: The Auditory Scaffolding Hypothesis.  Current Directions in Psychological Science, 18(5), 275-179 (click here to view

Sound is inherently a temporal and sequential signal. Experience with sound therefore may help bootstrap— that is, provide a kind of ‘‘scaffolding’’ for—the development of general cognitive abilities related to representing temporal or sequential patterns. Accordingly, the absence of sound early in development may result in disturbances to these sequencing skills. In support of this hypothesis, we present two types of findings. First, normalhearing adults do best on sequencing tasks when the sense of hearing, rather than sight, can be used. Second, recent findings suggest that deaf children have disturbances on exactly these same kinds of tasks that involve learning and manipulation of serial-order information. We suggest that sound provides an ‘‘auditory scaffolding’’ for time and serial-order behavior, possibly mediated through neural connections between the temporal and frontal lobes of the brain. Under conditions of auditory deprivation, auditory scaffolding is absent, resulting in neural reorganization and a disturbance to cognitive sequencing abilities.

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