Overview

During the Covid-19 pandemic, many universities relied on video lectures as a means of remote instruction. To determine whether giving students the ability to control the speed or playback of these videos would enhance their learning efficiency, we developed three hypotheses based on preliminary research and designed a study to test them.

As part of a team of three UX researchers, I was involved in the literature review and research design.

1. Hypotheses

H1: Speed up/down and Play back/forward features have a positive effect on learning efficiency

H2: Speed up/down and Play back/forward features have a positive effect on Perceived Control

H3: Speed up/down and Play back/forward features have a positive effect on learning efficiency through a mediator of Perceived Control

2. Research Design

① Recruiting

Participants Screener

100 male/ female university students aged 20 to 29
Screen participants with relevant knowledge about the stimulus → exclude people who scored more than 7(/10) on the quiz

② Exposure to the stimulus for 1 hr

Stimulus

1hr lecture about Blockchain

Speed and play controller

No limits for the amount of usage
Speed Controller Setting
: 0.25x - 2.0x at intervals of 0.25x
Play Controller Setting
: Keyboard & mouse can be used
- keyboard setting
: left (10 secs backward) & right (10 secs forward)

Allocation

Randomisation

Moderator variable Control

Prev. Knowledge: screened in recruiting
Motivation to learn
: giving a reward for the quiz result
Exposure time : control all to 1.5 hr
Learning ability
: survey K-SAT score, considering it in data analysis

① Participants allocation

Participants

100 male/ female university Students aged 20 to 29
Randomisation
Screen participants who has a knowledge about the stimulus
→ exclude people who scored more than 7(/10) on the quiz

② Exposure to the stimulus for 1 hr

Stimulus

1hr lecture about Blockchain

Speed and play controller

No limits for the amount of usage
Speed Controller Setting
: x0.25 - x2.0 at intervals of x0.25
Play Controller Setting
: Keyboard & mouse can be used
- keyboard setting
: left (10 secs backward) & right (10 secs forward)

Moderator variable Control

Prev. Knowledge: screening in recruiting
Motivation to learn
: giving a reward for the quiz result
Exposure time : control all to 1.5 hr
Learning ability
: survey K-SAT score, considering it in data analysis

③ Quiz to check the degree of understanding

Learning Effect

Dependent variable
Quiz results is a pointer to the degree of understanding

④ Perceived Control Questionnaire

Perceived Control

Mediator variable
Questionnaire from the study of Mayers and Chandler(2001)

⑤ Wrap-up Survey

Demography

Demography and K-SAT Score

3. Limitation

1. Uncontrollable Moderator and Mediator

Participant’s learning ability and motivations are NOT strictly controllable.
The number of exposures to the stimulus was not controlled, and participants who used the speed controller or playback feature had more exposure to the stimulus. Therefore, the number of exposures may be a mediator variable.

2. Other Mediators

Other Mediators may exist.

Relationship between
Speed/ Play Controller and Learning Efficiency

“ Do Speed/ Play Controller have an effect on learning efficiency for students in VOD-based learning environment? ”

Overview

1. Hypotheses

2. Research Design

3. Limitation

Other projects

Relationship between Speed/ Play Controller and Learning Efficiency

“ Do Speed/ Play Controller have an effect on learning efficiency for students in VOD-based learning environment? ”

Overview

1. Hypotheses

2. Research Design

3. Limitation

Other projects

Relationship between
Speed/ Play Controller and Learning Efficiency