When available resources become negative resources - The effects of cognitive overload on memory sensitivity and criterion bias

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This study uses signal detection measures and secondary task reaction times (STRTs) to examine the effects of structural complexity and information density on processing television messages. Of particular interest are results pertaining to cognitive overload experienced while processing structurally complex and informationally dense messages. When required resources exceed available resources-that is, when a state of cognitive overload is reached-both memory sensitivity and criterion bias drop dramatically while STRTs get faster. The results provide support for the contention that secondary task reaction times are often very fast during highly complex messages because the system is overloaded and therefore resources are shifted from the primary task to the secondary task. Also of interest, the liberal shift in criterion bias starts before overload has occurred, suggesting that criterion bias may be tracking available resources.
Publisher
SAGE PUBLICATIONS INC
Issue Date
2007-06
Language
English
Article Type
Article
Keywords

AROUSING CONTENT; TELEVISION MESSAGES; VIEWERS ATTENTION; CAPACITY; INFORMATION; COMPLEXITY; NEWS

Citation

COMMUNICATION RESEARCH, v.34, no.3, pp.277 - 296

ISSN
0093-6502
DOI
10.1177/0093650207300429
URI
http://hdl.handle.net/10203/89729
Appears in Collection
MT-Journal Papers(저널논문)
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