Behavioural and physiological responses to the emotional and taboo Stroop tasks in native and non-native speakers of English

Abstract

Skin conductance levels (SCLs) of native and non-native English speakers were measured during emotional and taboo Stroop tasks. Significantly slower response times to negative and taboo words when compared to neutral words were found in both groups of participants, but positive words were not found to differ significantly from neutral words. No differences between native and non-native speakers in their behavioural responses were present: the pattern of interference from negative and taboo words was found to be identical in L1 and L2. SCLs, however, did reveal differences between the native and non-native participants: native English speakers responded with significantly higher SCLs to negative and taboo words when compared with neutral and positive words. This difference was not observed in non-native speakers, although there was a trend for taboo words to elicit greater SCLs than positive words. This suggests that, although the two groups responded in a very similar manner on a behavioural level, the level of arousal produced by the negative and taboo words for native English speakers was greater than that for non-native speakers.

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