Israeli study shows that the larger an image, the better we remember it

Chariots, too, and horsemen went up with him; it was a very large troop.




(the israel bible)

January 23, 2022

3 min read

Expect billboards, TV screens and many other displays to get bigger. In a first-ever study of the issue, researchers at Bar-Ilan University (BIU) in Ramat Gan (near Tel Aviv) have shown that in natural vision, visual memory of images is affected by the size of the image on the retina. 

Every day, we ​​encounter images on the wall, in newspapers, books and electronic devices. Some become etched in our memory, and some don’t. The elements influencing whether we remember one image and not the other aren’t yet known, but researchers have assumed that image size and memory aren’t connected to one another since we usually understand what appears in an image whether it is large or small.

A total of 182 subjects participated in seven different experiments. Again and again, the researchers found that large images were better remembered – 1.5 times more – than small images. This phenomenon was not dependent on specific stimuli, the order in which the images appeared, their resolution, or the amount of information they contained.

These findings can have many implications, they stated, including on the use of different types of electronic screens and the quality of information processing when we rely on large vs. small screens. 

The study was led by Dr. Sharon Gilaie-Dotan, of BIU’s School of Optometry and Vision Science and Gonda (Goldschmied) Multidisciplinary Brain Research Center. The team aimed at determining whether large images are better remembered than small ones during natural daily behavior. Their assumption was based on the fact that large images require the visual system to use greater resources for processing them.

The results of the study, just published in the journal Proceedings of the [US] National Academy of Sciences (PLoS) under the title “Larger images are better remembered during naturalistic encoding,”  show for the first time that in natural vision, visual memory of images is affected by the size of the image on the retina – the screen at the back of the eye.

Shaimaa Masarwa and Olga Kreichman, doctoral students in Gilaie-Dotan’s lab, examined what happens to visual memory when participants were asked to look at pictures without knowing anything about a memory task to come. Each participant was shown different pictures in different sizes, each presented to them just once.

To understand whether this result was determined by size rather than amount of detail, the researchers also examined whether large, blurred images are better etched in memory than clear, small images, where the large images contained the same details as the small images. To their surprise, they found that even in this case, the participants remembered the large, blurry images better than the small, clear images. They also found that most images were better remembered when they were presented as bigger relative to when they were presented as smaller.

“In areas of the brain that represent the retinal image, more resources will be directed to processing large images than to processing small images because the processing is determined by the area of the retina that the image stimulates,” explained Dr. Gilaie-Dotan. She stressed that additional factors may contribute to remembering large images, such as different eye movements and more attention and interest that large images elicit.

The study was conducted on young adults aged 18 to 40, ages in which vision is completely developed but has not yet begun to age. Different ages may be affected by the size of the stimuli in a different way, since both age and experience with screens are quite different between young and old.

While the study examined only static images, the findings could have important implications on the “screen generation” that consumes much of its information on small electronic devices. “It is possible that even in dynamic images, such as videos, greater vision resources will be directed towards processing videos on large vs. small screens and therefore, videos on the large screen will likely be better remembered,” concluded Gilaie-Dotan. 

In addition, many high school textbooks today are available in electronic format, and students sometimes study on their smartphones. While the smartphone screen is handy and accessible, in practice the quality of learning may be better on a larger screen. Gilaie-Dotan said that much follow-up research will be needed to understand how widespread the phenomenon is and whether it affects all processing in all situations, or only in some cases.


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