Discover your cognitive profile.
2021-01-27: non-flash versions of the standard tests are still being added.
Currently, the standard Reaction Time, Picture n-back, Go/no-go, and Stroop tasks have non-flash versions. Auditory reaction time is next.
The html5 version is not yet size-optimized so your load time will be slower -- sorry about that! Load optimizations will come after the major tests are converted.
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- Attentional
- Perceptual
- Executive
- Item span
- Memory
- Experimental
The flanker test is another interference task where different inputs compete with the target, slowing down the response speed. This is a basic variant using arrows: identify the direction of the CENTER arrow as fast as you can. Estimated completion time: less than 1 minute per session. (test added following suggestion from an anonymous user).
Variant of a simple, non-auditory digit span test. The digit span is often used to measure short-term memory via the phonological loop. The objective is to remember as many digits as possible. The expected average is around 7 digits for the untrained; trained individuals can reach well above 60 digits. Common techniques include the method of loci, mnemonics, and plain association; at this point, longer-term memory processes become involved in task performance.
The same task as the forward digit span, done in reverse. This means when answering, you need to type the digits in the reverse order in which you saw them. Just as you probably thought, this is a harder task than the forward digit span, as it requires manipulation of items in the working memory, requiring a greater role of the executive functions. Normally, your backwards digit span will be a few less than your forward digit span, along with an expected slowdown of response time. How much slower?
The simple digit span test, administered by sound, in English. As this task usually depends on the phonological loop, it is similar to the first digit span test, except 1. there is no visual co-/activation, 2. there is no conversion of memory modality (visual to auditory), 3. it forces you to think in English, at least at the comprehension stage, which may put those who count in non-English languages at a disadvantage. Is there a difference? See for yourself.
Flash-based variant of the dual n-back test using a visual+auditory paradigm as detailed in S.M. Jaeggi et al.'s paper, Improving fluid intelligence with training on working memory. This test simultaneously presents visual and auditory stimuli, and will dynamically change difficulty based on past performance, so take note of the title before beginning. Requires speakers/headphones.
This is a variant of what is known as the "n-back task," a test useful for investigating working memory. Try using the 2-back option first, then move higher up. This version was capped at 7-back, which should be very difficult for most people. As some users have gotten used to it, it is now capped at n = 9.
Variant of the Paced Auditory Serial Addition Task (PASAT). The objective is to sum up the last n numbers shown before the time runs out. This requires sustained attention as well as executive functions (cingulate, prefrontal, temporal, parietal areas -- will follow up). There is some correlation between IQ and PASAT performance; indeed, as the mechanisms are similar to the n-back task, PASAT performance is also correlated to n-back task performance. A dual-modality PSAT setup would be analogous to the dual n-back. This test begins at PASAT-2, and is self-adjusted. Please view the demonstration before you begin.
An implementation of the reading span task based on the seminal work, Individual Differences in Working Memory and Reading (Daneman and Carpenter, 1980). RST variants are commonly used to test working memory capacity as well as reading comprehension ability. RST performance is also moderately correlated with Verbal SAT performance. The D&C RS average is around 3.15 (this should be slightly above a general population average).
A multimodal n-back task designed to be resistant to chunking effects by maintaining sufficient novelty. Choose different combinations of visual and auditory stimuli, with three input options (auditory, spatial, visual). A Flickr option is available as a visual source -- along with the links -- for a bit of photo discovery fun! There is currently no demonstration; familiarity with other dual tasks (see J-B dual n-back) is required.
This is a dual n-back task variant that adjusts the stimulus presentation speed based on immediate feedback. That is, the better you perform, the faster it goes. It is also an attempt to make the dual n-back test entertaining. Gameplay is largely a reproduction of Damien Clark's Missile Game 3D. This test is still highly experimental and is likely to change. To read about the test concepts and design principles, please check out the blog. If you take this test, please watch the demonstration; you are guaranteed to be confused otherwise. This test is NOT intuitive.