Spoken propositional idea density, a measure to help second language English speaking students: A multicentre cohort...

Area of Science:

• Educational Psychology
• Cognitive Science
• Linguistics

Background:

• Idea density, a measure of conceptual information, impacts text comprehension.
• Previous research indicates a link between idea density and cognitive load.
• Understanding how spoken idea density affects academic attainment is crucial for educational interventions.

Purpose of the Study:

• To investigate the influence of spoken idea density on academic attainment in young, healthy students.
• To explore demographic factors, such as first language, that may moderate this relationship.

Main Methods:

• Seventy-five students attended two online lectures, one more idea-dense (MID) and one less idea-dense (LID).
• Participants completed a 10-multiple-choice-question quiz after each lecture.
• Artificial neural network models were employed to analyze performance predictors.

Main Results:

• Students scored higher on average after the less idea-dense lecture (LID median score = 7) compared to the more idea-dense lecture (MID median score = 6; p=0.04).
• First language was the primary predictor of exam performance.
• Second-language English speakers showed a significantly greater benefit from lower idea density lectures.

Conclusions:

• Spoken idea density directly affects student comprehension and academic attainment.
• The impact of idea density is disproportionate for second-language speakers.
• Reducing spoken idea density may help level academic disparities between first and second language speakers.