Does the target symbol (left) appear anywhere in the search row? Answer Yes or No as fast as possible. 90 seconds.
Symbol Search is a classic subtest from the Wechsler Adult Intelligence Scale (WAIS), one of the most widely administered intelligence tests in the world, measuring visual scanning speed and short-term visual memory. In each round you must quickly decide whether a target symbol appears anywhere in a row of symbols, a rapid yes/no visual search task that's one of the most reliable indicators of overall processing speed in cognitive testing.
Processing speed - how quickly your brain can take in, evaluate, and respond to simple visual information - is considered one of the core building blocks of general cognitive ability, alongside working memory and reasoning. This free symbol search test lets you practice and benchmark this exact clinical-style processing speed measure.
The WAIS is administered by psychologists to assess intellectual functioning, and its Symbol Search and Coding subtests specifically isolate processing speed from other cognitive domains like verbal comprehension or working memory. This isolation is valuable because processing speed can decline independently of other abilities in aging, certain medical conditions, or after brain injury.
Psychology students studying WAIS-style intelligence testing, people wanting a self-tracking processing speed benchmark, and anyone curious about their visual scanning ability use this free symbol search test as a quick cognitive checkup.
This free version is inspired by the WAIS Symbol Search format but is a self-tracking benchmark, not a clinical diagnostic tool administered by a licensed psychologist.
Processing speed captures how quickly your brain takes in, evaluates, and responds to simple visual information - a foundational cognitive skill distinct from memory or reasoning.
Yes, completely free with a 90-second timer and instant percentile scoring, no signup required.
It measures visual processing speed by having you quickly determine whether a target symbol appears within a search group, a task adapted from standard neuropsychological batteries.
Symbol Search is a simple yes/no matching task testing pure visual scanning speed, while Digit Symbol requires active substitution using a reference key, adding a memory component.
It's a sensitive, quick measure of processing speed often used alongside other tests to screen for cognitive slowing related to aging, injury, or certain conditions.
Processing speed shows only modest improvement with practice on the specific task, though general alertness, sleep, and reduced distraction all help performance.