Each person has their own digital footprint like their search history on Google or their viewing preferences on TikTok. While individual searches, like “how to wash your hands” may reveal very little about you, over time these searches build up and with enough data, they can be examined to reveal patterns.
One particular pattern that researchers have been interested in is suicidal ideation, and for us in particular, whether a person’s Google search history can reveal patterns about their suicidal ideation in the past. This has inspired us to start the POISE project, short for Personalized Online Information Seeking Explorer.
The first use case of POISE emerged from data collected as part of a recent study. Our team used Google search histories to observe patterns related to suicidal ideation. The participants consented to providing their online search data around the time of their suicidal attempts. The analysis revealed distinctive online information seeking behavior across individuals.