Meta-Analysis on the Positive Correlation Between Insomnia and False Memories

Insomnia is a prevalent sleep disorder that impacts approximately 30% of the whole population in the United States. It is identified by challenges with falling or asleep and has been associated with various cognitive dysfunctions, including issues with memory formation. In this work, we conduct a meta-analysis involving two data sets to analyze the relationship between insomnia and false memory formation (memories of events that did not actually occur), shedding light on the consequences of sleep deprivation. In the first data set, participants engaged in a simulated crime scenario and were assessed on their ability to identify the perpetrator from both lineups after a period of sleep or wakefulness. In the second data set, participants were presented with themed word lists and, after sleep or wakefulness, tested for memory of words on the list. The data underwent processing using R, and meta-analysis techniques were utilized to integrate findings across these two studies. We used various techniques, such as random-effects models and subgroup analyses, to combine the findings from the studies. However, we were unable to assess the variability between studies due to the limitations of working with binary data. The results show a connection between insomnia and an increase in the formation of false memories, with similar effect sizes across studies. Further research is anticipated to deepen the understanding of the link between insomnia and cognitive health, offering valuable insights into sleep disorders and memory.