The Self-Ordered Pointing Test (SOPT) first described by Petrides and Milner (1982) can be used to assess working and strategic memory.(Spreen & Strauss, 1998). The test is comprised of a series of trials in which a set of stimulus items (either images or words) are spatially arranged on a display. The arrangement of stimulus items is varied from trial to trial. On each trial the participant is required to point to an item which they have not pointed to on a previous trial. Errors (pointing to an item that has been previously pointed to) and response latencies are typically recorded. In general the number of items presented on each trial in a set ranges from six to sixteen. Stimulus items are sets of either abstract or representational images, or high or low imagery words.
The CATs SOPT allows considerable flexibility in test design. Any image that can be represented in any one of several computer compatible image formats can be used. Image size can be specified by the user and the number of images displayed can vary up to the number of images that can be accommodated on the computer screen. Images may be positioned at any location on the screen, allowing them to be arranged in either a symmetric pattern (such as a grid), or randomly placed. Instructions can be provided at the beginning of each trial. Intertrial intervals can be specified and, if desired, instructions for a distraction task can be displayed during the intertrial interval (e.g. Please count backward from 100 by threes). A timeout interval which will terminate a trial after a specified amount of time can also be specified. If desired, the program can check to see if the participant has tried to select an image located in the same physical location on two successive trials and if they have, at the testers discretion, the program will simply ignore the participant input, or provided a warning message that this is not an allowable strategy and then ignore the participant input Both the image selected and its selection latency are recorded for each trial. Summary data includes error counts, average selection latencies, timeout counts, percentages correct and the number of rule breaks aggregated by condition (e.g. image count, material type). Raw data can be exported for further analysis if the user is interested in performing more precise analysis of the patterns of participant performance (e.g. stimulus items have some intrinsic organization properties). Test captions used during testing are presented in English; or at the users discretion captions can be generated in any language that uses the Roman alphabet. Instructions can be typed either directly into the instruction fields or can be imported from a test processor (allowing instructions and test captions to be produced in languages that require diacritical marks). Your CATs SOPT comes with several preprogrammed tests. Shown above is a 12 item abstract SOPT.
Pricing
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CATs SOPT Tower of London Visual Span Card Sort Reaction Time n-Back Repeat Symptom Validity
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