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Effects of Brain Laterality on Decoding Accuracy for Facial Displays of Emotion
Unformatted Document Text:  Effects of Brain 10 discriminations such as facial recognition. Furthermore, the left hemisphere can process nonverbal communication, although in a rudimentary fashion (Andersen et al., 1979; Bouma, 1990). Thus, the left hemisphere is specialized for language, and the right hemisphere for nonverbal function, but both hemispheres contribute to the processing of all information. Modular theory explains how a majority of people processes information. However, in other literature (see Geschwind & Galaburda, 1987) there is a distinction between standard and anomalous hemispheric dominance. Standard and anomalous hemispheric dominance is an application of modular theory wherein the brain is still holistically processing information, with each hemisphere specializing in the processing of particular types of information. However, the distinction is that common specialization (left for verbal, right for nonverbal) is not the same for every individual; in some people these specializations are more symmetrical or even reversed. Standard and Anomalous Dominance A majority of the population and an even larger majority of right-handed people exhibit standard hemispheric dominance (SD), which consists of strong left hemisphere specialization for language and strong right hemisphere specialization for other functions, including nonverbal communication (Geschwind & Galaburda, 1987). “Empirical research supports a left hemisphere specialization for verbal tasks and a right hemisphere specialization for nonverbal tasks for right-handed persons” (Andersen et al., 1979, p. 81). Moreover, the left hemisphere is responsible for the logical, analytical, and social interpretations of incoming information, whereas the right hemisphere is responsible for the analogic, emotive, and holistic interpretation of the same information (Stacks & Andersen, 1989). In any conversation, for example, people will process the words spoken primarily in the left hemisphere, while processing nonverbal elements such as the vocalics, facial expressions, and nonverbal gestures associated with the

Authors: Floyd, Kory. and Mikkelson, Alan.
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Effects of Brain 10
discriminations such as facial recognition. Furthermore, the left hemisphere can process
nonverbal communication, although in a rudimentary fashion (Andersen et al., 1979; Bouma,
1990). Thus, the left hemisphere is specialized for language, and the right hemisphere for
nonverbal function, but both hemispheres contribute to the processing of all information.
Modular theory explains how a majority of people processes information. However, in
other literature (see Geschwind & Galaburda, 1987) there is a distinction between standard and
anomalous hemispheric dominance. Standard and anomalous hemispheric dominance is an
application of modular theory wherein the brain is still holistically processing information, with
each hemisphere specializing in the processing of particular types of information. However, the
distinction is that common specialization (left for verbal, right for nonverbal) is not the same for
every individual; in some people these specializations are more symmetrical or even reversed.
Standard and Anomalous Dominance
A majority of the population and an even larger majority of right-handed people exhibit
standard hemispheric dominance (SD), which consists of strong left hemisphere specialization
for language and strong right hemisphere specialization for other functions, including nonverbal
communication (Geschwind & Galaburda, 1987). “Empirical research supports a left
hemisphere specialization for verbal tasks and a right hemisphere specialization for nonverbal
tasks for right-handed persons” (Andersen et al., 1979, p. 81). Moreover, the left hemisphere is
responsible for the logical, analytical, and social interpretations of incoming information,
whereas the right hemisphere is responsible for the analogic, emotive, and holistic interpretation
of the same information (Stacks & Andersen, 1989). In any conversation, for example, people
will process the words spoken primarily in the left hemisphere, while processing nonverbal
elements such as the vocalics, facial expressions, and nonverbal gestures associated with the


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