Visual Working Memory (VWM) is the short-term memory associated with cognitive tasks, namely the retention of visual information between eye fixations. This Visual Working Memory Test Tool is a ReactJS App that measures VWM through an Image Change Detection task adapted from Luck and Vogel's study.
This free tool allows to measure VWM through a customizable change detection test.
The image change detection test consists of a sequence of images with colored squares as shown bellow:
user_id: Participant's unique identifier.
vwm_capacity: Visual Working Memory capacity (K) resulting from K = S(H-F), where S is the set size, H is the hit rate and F is the false alarm rate.
size4_score: Number of correct answers for sets of size 4.
size8_score: Number of correct answers for sets of size 8.
size4_hit_rate: Proportion of trials where a change trial was correctly identified as a change trial for sets of size 4.
size8_hit_rate: Proportion of trials where a change trial was correctly identified as a change trial for sets of size 8.
size4_false_alarm: Proportion of trials where a no change trial was incorrectly identified as a change trial for sets of size 4.
size8_false_alarm: Proportion of trials where a no change trial was incorrectly identified as a change trial for sets of size 8.
correct_answers: Correct answer for each trial. True if it is a change trial, False otherwise.
user_answers: Answers given by the user. True if user identified a change trial, False otherwise.
set_sizes: Sizes of the trials.
duration: Time spent taking the test in seconds.
In order to save results in the PostgreSQL database, please create a .env file as shown in the sample provided.
Clone the repository and open the folder:
git clone https://github.com/CarolinaMPereira/Visual-Working-Memory-Test-Tool.git
cd Visual-Working-Memory-Test-ToolInitialize backend:
cd backend
npm i
npm run startInitialize frontend in another terminal tab:
cd Visual-Working-Memory-Test-Tool/frontend
npm i
npm run startOpen http://localhost:3000/ in your web browser.