By Karim Hammam
After noticing a decline in her cognitive abilities, Lydia Spencer-Elliott decided to overhaul her digital consumption habits. Concerned that short-form social media algorithms were damaging her mental sharpness, she implemented a strict "media diet" to replace mindless scrolling with more intellectually stimulating content.
Identifying Cognitive Decline
The motivation for the experiment stemmed from a realization that her memory was failing in everyday situations, such as being unable to recall basic literary facts despite her academic background. To quantify the issue, Spencer-Elliott took the Great British Intelligence Test, developed by researchers at Imperial College London. The results indicated that while her attention and verbal comprehension were in the top 20 percent for her age group, her short and medium-term memory scores were in the bottom 30 percent.
The Media Diet Method
Rather than attempting to quit smartphone use entirely, Spencer-Elliott focused on the quality of her screen time. She applied a logic similar to nutritional guidelines, limiting her social media consumption to roughly 36 minutes per day. This was achieved by setting strict time limits on Instagram and TikTok, while replacing mindless video loops with news podcasts, crosswords, and books.
Significant Cognitive Improvements
The results after 30 days showed a marked improvement in her cognitive scores. Most notably, her medium-term memory moved from the bottom 30 percent to just above the average for her age group. Additionally, her verbal reasoning scores climbed into the top 20 percent, and her spatial working memory improved from the bottom 30 percent to the top 40 percent.
Beyond the Test Scores
The experiment also yielded psychological and social benefits. Spencer-Elliott reported feeling sharper during interpersonal interactions, noting better eye contact and an improved ability to retain details during conversations. Interestingly, as her interest in low-quality social media content waned, her total screen time naturally halved to approximately three hours a day.
