Assessment centre ⏵ Cognitive function ⏵ Broken letter recognition
Description
Participants are shown a series of letters of the alphabet with segments removed and are asked to identify which letter is being displayed. As the test progresses the letters are progressively degraded by removing pixels to produce fragmented/broken images. The test concludes when either the degree of fragmentation becomes so great that the participant is unable to identify most of the letters or a time-out threshold is reached.Since its first use in UK Biobank the test has been renamed and is now known as the Graded Incomplete Letters Test (GILT).
The OQS website includes a working demonstration of the questionnaire: https://oqsweb.ndph.ox.ac.uk/modetail.cgi?mod_id=85.
