M. Vandenhout et al., NO THREAT-RELATED PROCESSING BIAS IN LOW TRAIT-ANXIOUS HIGH STATE-ANXIOUS NOVICE PARACHUTERS, Cognitive therapy and research, 22(2), 1998, pp. 125-135
Earlier studies found that processing bias in anxious patients as meas
ured by the modified Stroop task is reduced after behavior therapy. Th
is suggests that threat interference reflects an anxious state rather
than a stable trait. Others (e.g., Matthews & Macleod, 1994), however
have proposed that it emerges from the interaction of state anxiety an
d some vulnerability trait The experiment tested whether in line with
the stare hypothesis and in contrast to the interaction hypothesis, st
ate anxiety is sufficient to produce processing bias. Twenty-six low-t
rait-anxious participants who never parachuted volunteered for a parac
hute jump and their performance on the modified Stroop task was compar
ed with a control group matched on trait anxiety. Anticipation of the
jump resulted in subjective anxiety but not in threat interference on
the modified Stroop, where there were no between group differences. Th
e data suggest that state anxiety in itself is insufficient to explain
processing bias. The findings are discussed critically.