Some Effects of Perceptual Load on Spoken Text Comprehension

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Spoken Language Comprehension

Background:

• Subsidiary task paradigms, like word-monitoring, are common in spoken language comprehension research.
• Understanding how secondary tasks influence simultaneous comprehension processing is crucial.

Purpose of the Study:

• To investigate the effects of word- and phoneme-monitoring tasks on spoken language comprehension.
• To examine how these tasks impact different levels of text representation.

Main Methods:

• Participants listened to texts under three conditions: unconstrained comprehension, word-monitoring, and phoneme-monitoring.
• Comprehension was assessed via verification statements targeting surface structure and propositional levels (high-level, low-level, macropropositions).

Main Results:

• Word monitoring significantly facilitated overall comprehension compared to unconstrained comprehension.
• Phoneme monitoring showed no significant effect on comprehension.
• Results aligned with Kintsch and van Dijk's text comprehension theory.

Conclusions:

• Subsidiary tasks, particularly word monitoring, can enhance spoken language comprehension.
• The findings challenge the 'fixed-capacity decision mechanism' theory.
• Subsidiary task paradigms are valuable for studying spoken text comprehension when text representation is probed.