# Speech speed in audiovisual resources in the learning process of university students: a scoping review

## TL;DR

This study reviews how changing the speed of audiovisual resources affects university students' learning performance.

## Contribution

The paper provides a scoping review of how speech rate in audiovisual resources influences university students' learning outcomes.

## Key findings

- Audiovisual resources at up to 2x speed can improve learning performance.
- Speeds greater than 2x limit the learning process.
- Normal speed ranges (1x to 1.75x) are most favorable for content comprehension.

## Abstract

This study aimed to map studies that investigated the influence of speech rate on the reproduction of audiovisual resources in university students' learning using a Scope review.

The PCC strategy was used where P- University students, C- Increased or decreased speech rate, C- Learning. The searches were conducted using the SciELO, Lilacs, PubMed, Scopus, Web of Science, and Google Scholar databases.

Scientific articles published in the databases above with a target audience of university students were included; works that compared average speech rate with increased or decreased speed and had learning-related skills as the study response.

The Joanna Briggs Institute checklists were used for methodological quality assessment.

We found that four articles observed an improvement in learning performance when the audiovisual resource was presented at a speed of up to 2x, three did not observe a difference and two studies observed a worsening in the skills involved in learning.The results indicate a low risk of bias in most studies included.

A study indicated improved learning in audiovisuals at a speed slower than 1x. It was observed that reproduction speed rates of audiovisual resources impact university students' learning process. Rates greater than 2x limit the learning process. Rates within the normal range (between 1x and 1.75x) are more favorable for capturing the content.