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In human vision, the useful field of view (or UFOV) is the visual area from which information can be extracted without eye or head movements. [1] UFOV size generally decreases with age, [2] most likely due to decreases in visual processing speed, reduced perception, and increased susceptibility to distraction.
The test can provide information about visual search speed, scanning, speed of processing, mental flexibility, and executive functioning. [1] It is sensitive to cognitive impairment associated with dementia , including Alzheimer's disease .
The Cattell–Horn–Carroll theory factors that this test examines are based on 9 broad stratum abilities, although the test is able to produce 20 scores [4] only seven of these broad abilities are more commonly measured: comprehension-knowledge (Gc), fluid reasoning (Gf), short-term memory (Gsm), processing speed (Gs), auditory processing (Ga), visual-spatial ability (Gv), and long-term ...
This is timed, and some of the more difficult puzzles award bonuses for speed. Visual Puzzles (primary) – children view a puzzle in a stimulus book and choose from among pieces of which three could construct the puzzle. The VSI is a measure of visual spatial processing. The FRI is derived from the Matrix Reasoning and Figure Weights subtests ...
The visual system is organized hierarchically, with anatomical areas that have specialized functions in visual processing. Low-level visual processing is concerned with determining different types of contrast among images projected onto the retina whereas high-level visual processing refers to the cognitive processes that integrate information from a variety of sources into the visual ...
Throughout its history, this test has been revised multiple times since its creation, starting with the WAIS in 1955, to the WAIS-R in 1981, to the WAIS-III in 1996, and most recently the WAIS-IV in 2008. This test helps assess the level of the individuals verbal comprehension, perceptual reasoning, working memory, and processing speed. [11]