This project is to set up a bespoke platform to collect new and ongoing cognitive data for the ALSPAC G0 mothers and partners. The FLAME array of cognition tests (https://doi.org/10.1002/dad2.12098) have been developed by the University of Exeter and are all well-established tests that show excellent sensitivity to cognitive change and trajectory. They have been in use in the PROTECT study (https://www.protectstudy.org.uk) for ten years. It consists of 8 tests which capture working memory (spatial/numerical), episodic memory, attention, reaction time/processing speed and executive function. The University of Exeter would deliver a bespoke online cognitive test system to ALSPAC, which would include ALSPAC's branding. ALSPAC would then send a unique URL to ALSPAC participants to access the tests, which can be performed using mobile phones or touchscreen devices. The complete set of tests would take ALSPAC participants 30-40 minutes to complete and would be completed annually. The data collected will be used in a wide variety of studies, focussed on aging in the parent cohort and used as baseline for future funding proposals.