Where does shadowing collide?

In cognitive psychology, shadowing is the task of repeating a speech stream aloud immediately as it is heard, used to probe how attention selects one message among competing ones. Cherry (1953), in the Journal of the Acoustical Society of America, introduced the shadowing and dichotic-listening paradigm in studying the cocktail-party problem. Here shadowing is an attentional speech-repetition task, not the suppression of a scattered beam in a nucleus.[1]

Unit

One shadowing trial, scored by accuracy and lag in repeating the attended stream.

Recovery means

Have a listener repeat one speech stream aloud while another competes.

Measured by

By repetition accuracy and detection of changes in the unattended channel.

In nuclear and high-energy physics, shadowing is the reduction in the cross-section per nucleon when a probe scatters off a nucleus, because nucleons at the front screen those behind, as seen in the depletion of structure functions at small Bjorken x. Frankfurt, Strikman, and Liuti (1991), in Nuclear Physics A, relate nuclear shadowing to the EMC effect. Here shadowing is a screening of scattering inside a nucleus, not an attentional speech task.[2]

Unit

One shadowing ratio (nuclear to free cross-section per nucleon, below one).

Recovery means

Compare scattering per nucleon in a nucleus with that off free nucleons at small x.

Measured by

From deep-inelastic structure-function ratios across nuclei.