Development and Preliminary Psychometric Evaluation of the WILAP Visual Short-Term Memory and Selective Attention Test

The human mind is a master of sorting. Every second, our eyes are flooded with more information than we can possibly process. To make sense of the world, we must instantly decide what is important and what can be ignored, while holding onto just enough visual detail to guide our next move. This delicate balancing act relies on two closely linked mental skills. The first is the ability to keep a fleeting image in mind for a few seconds, like remembering the color of a car you just saw. The second is the ability to focus on that specific image while blocking out everything else, like ignoring a busy street to remember that car's license plate. Scientists have long studied these skills separately, but understanding how they work together in real life remains a complex challenge.

In a new study, researchers from the University of Ibadan in Nigeria set out to build a tool that could measure these two skills at the same time. They wanted to create a test that did not require expensive computers or complex software, but could instead be done with simple physical objects. Their goal was to see if a person could remember a sequence of colored shapes while simultaneously ignoring distracting information. The result is a new assessment called the WILAP Visual Short-Term Memory and Selective Attention Test. The researchers spent time building the device, testing it on a small group of students, and checking if the results were consistent. While the early signs are promising, the study also makes it clear that this tool is still a work in progress and needs much more testing before it can be used widely.

The device itself is a physical box, roughly the size of a small house, constructed by a carpenter. Inside, there are compartments or doors that can be opened to reveal colored geometric shapes. The test works by asking a participant to watch as a sequence of these shapes is revealed one by one. The person must remember the order and the specific combination of color and shape for each item. As the test goes on, the sequences get longer, making the memory task harder. To add the element of attention, the test includes moments where the participant must choose the correct shapes from a board that also contains extra, irrelevant shapes. The participant has to filter out the wrong options and reproduce the exact sequence they saw earlier. This design forces the brain to do two things at once: hold the visual information in memory and actively ignore the noise.

To see if this new test actually worked, the researchers first asked fifteen students to try it out and give their opinions on whether the instructions were clear and the task made sense. These students found the test easy to understand and felt it was a fair way to measure memory and attention. A separate group of five experts, including psychologists, also reviewed the test and agreed that it seemed to measure what it was supposed to measure. These early checks gave the researchers confidence that the test was well-designed and understandable to the people taking it.

Next, the team moved on to checking the reliability of the scores. They asked twenty students to take the test, wait about forty-five minutes, and then take it again. The results showed that the students' scores were very consistent between the first and second attempts. If a student did well the first time, they tended to do well the second time, suggesting the test measures something stable rather than random luck. The researchers also created a slightly different version of the test to see if the results held up with different shapes or sequences. The scores from the two versions were also closely related, which is a good sign that the test is robust.

However, when the researchers tried to compare the new test with an established, well-known test for visual memory, the results were less clear. They asked the same twenty students to take a standard test called the Benton Visual Retention Test, which involves copying geometric designs from memory. They expected that students who scored high on the new WILAP test would also score high on the Benton test. Instead, the connection between the two was weak and not statistically significant. This does not mean the new test is bad, but it does mean the researchers cannot yet prove that it measures the same thing as the older, established test. It is possible that the new test is measuring something slightly different, or that the group of students was too small to show a clear link.

The study also looked at whether the test results were unrelated to a completely different trait called resilience, which is a person's ability to bounce back from stress. The researchers found no meaningful connection between the memory scores and the resilience scores, which is exactly what they hoped to see. This suggests that the test is specifically measuring memory and attention, and not just a general personality trait.

Despite these encouraging findings, the authors are careful not to claim that the test is perfect or ready for general use. The group of twenty students who took the test was small and came from a single university, mostly studying science and engineering. This limits how much the results can tell us about the general population. The researchers also noted a few technical issues, such as a small inconsistency in how the test scores are calculated, which needs to be fixed before the test is published. They emphasized that the test is currently a promising prototype, not a finished product.

The ultimate goal of this work is to provide a low-cost, accessible way to study how the human brain handles visual information. By using a simple box and colored shapes, the researchers have created a tool that can be used in places without computers. The early results show that the test is feasible, reliable, and understandable. However, to truly validate the tool, the researchers say they need to test it on a much larger and more diverse group of people. They need to prove that it works for everyone, not just a small group of university students, and they need to show clearly how it compares to other established tests. Until that larger study is done, the WILAP test remains an intriguing and well-designed experiment that offers a new way to look at the mind, but one that still has more work to do.