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Frequently Asked Questions about CAAS Software Facts Sheet - Learn How CAAS Works 
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Method of Responding System Microphone Input - Naming Tasks Collect naming responses using a microphone. The researcher has complete control of the data as it is being collected. Accuracy is recorded by clicking left or right mouse buttons. Correct errors online. For example, erroneous responses (e.g., coughs) can be easily eliminated by double clicking during data collection, and erroneously scored responses can be easily corrected immediately after the incorrect score is recorded by clicking both left and right mouse buttons and then clicking correct button. Binary Decision With Mouse Buttons Binary choice responding (e.g., lexical decision tasks, true-false, etc.) can occur either through presses of the left or right mouse keys or through programming of keys on a keyboard. Binary choice tasks can be set up in the Designer module to allow automatic collection of both response time and accuracy data. Multiple Choice Decisions With On-Screen Buttons Text, sound, picture, or video files can be presented on the screen and participants can respond by clicking one of up to five multiple choice buttons you place on the screen. The buttons can be labeled with answer types. The response time and accuracy of responding is automatically collected. Collect Speed And Accuracy Speed (response time) and accuracy of performance is collected for all response types (microphone, button press, screen clicks of buttons). Naming tasks require human scoring for accuracy but the accuracy of the other response types is recorded automatically. Response times can be trimmed to eliminate impossibly fast responses and responses two standard deviations above the mean. Combine Speed And Accuracy Into A Single Quantity Speed and accuracy of performance can be combined into a single index using an innovative algorithm that corrects for speed-accuracy tradeoffs. |