Abstract
University undergraduates were pre-screened for blood fearfulness (fear of blood, n = 25), spider fearfulness (fear of spiders, n = 30), or non-fearfulness (n = 23) and presented with blood, spider, neutral, positive, and pseudoword (pronouncable nonword, like flirp) stimuli in a lexical decision task (LDT). Use of the LDT in phobic individuals may provide insight about how these individuals process, store, and ultimately use information and, in turn, how processing this information affects their day-to-day activities. Words were responded to faster than pseudowords. No group main or interaction effects emerged, and all groups responded faster and more accurately to spider words then blood words and neutral words. Results suggest that the single-word lexical decision task may not be sensitive in detecting lexical processing biases toward threat in these groups. Results also suggest that paradigms that are based on high-level, semantic-conceptual information processing (like lexical decision) are not sensitive enough to detect group differences in blood and spider phobias. Any array of perceptual and conceptual tasks taken together may be needed to detect these differences.
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