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Re:TheAshLad - Sandbooks

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any event.In contrast with Alphawho works on only one project at a.<br />

time Beta works on several projects concurrentlyleading to piles of.<br />

papers and books in his work spaceunlike Alpha s meticulous desk. In.<br />

both the cognitive and the motor skills of Alpha and Beta is a basic. dif<br />

ference that is assumed to correspond to a fundamental difference.<br />

either in brain organization or in the dominance of one hemisphere.<br />

over the other. Alpha and Beta represent extreme lefthemisphere and.<br />

righthemisphere peo plerespectively.The fundamental difference.<br />

between them is their preferred cognitive mode.Alpha is.<br />

analyticallogicalverbaland meticulouswhereas Beta is a synthesizer.<br />

more concerned with organizing concepts and visualizing meaningful.<br />

wholes. As intriguing as the Alpha and Beta analysis might bewe.<br />

caution that it is pure speculationwithout empirical basis.Factors. other<br />

than brain organiza tion probably contribute to preferred. cognitive<br />

mode.. In an examination in our undergraduate course in human neu.<br />

ropsychologywe askedIn what ways is the human brain symmetrical.<br />

Thinking it to be a trick questiona majority of the students. answeredIt<br />

isn t symmetricalit s asymmetrical.This answer is. wrongbecause many<br />

functions especially of the primary sensory and. motor areas appear to<br />

be identical on the two sides of the brain.. VARIATIONS IN<br />

CEREBRAL ASYMMETRY. People use the word sinister as a<br />

synonym for wicked or. evil.Originally a Latin word meaning lefthand<br />

sideour contemporary. English meaning implies that lefthandedness has<br />

been historically. viewed at best as strange or unusual.. Summary of<br />

handedness in performing various tasks. Left Either Right. Task () () ().<br />

Dealing cards . . .. Unscrewing jar . . .. Shoveling . . .. Sweeping . . ..<br />

Writing . . .. Striking match . . .. Throwing ball . . .. Hammering . . ..<br />

Using toothbrush . . .. Using racket . . .. Using scissors . . .. Although<br />

the belief that cognitive functions are more bilaterally. organized in<br />

lefthanders than in righthanders is widespread in the. neurological<br />

literature little evidence exists for this. generalization.. There is a larger<br />

incidence of lefthandedness among mentally. defective children and<br />

children with various neurological disorders. than is found in the<br />

general population.This finding is not. surprisingbecauseif the dominant<br />

hemisphere is injured at an early. agehandedness and dominance can<br />

move under the control of what would. normally be the nondominant<br />

hemisphere.Because there are so many more. righthanded childrenit can<br />

be expected by probability alone that. more right handed children with<br />

lefthemisphere damage would switch. righthemisphere dominance than<br />

would switch in he reverse. direction.That such switching can take<br />

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