Effects of Screen Size, Screen Resolution, and （屏幕大小的影响、屏幕分辨率和）.pdf

RESEARCH REPORT October 2001 RR-01-23 Effects of Screen Size, Screen Resolution, and Display Rate on Computer-Based Test Performance Brent Bridgeman Mary Louise Lennon Altamese Jackenthal Statistics Research Division Princeton, NJ 08541 Effects of Screen Size, Screen Resolution, and Display Rate on Computer-Based Test Performance Brent Bridgeman, Mary Louise Lennon, and Altamese Jackenthal Educational Testing Service, Princeton, New Jersey October 2001 Research Reports provide preliminary and limited dissemination of ETS research prior to publication. They are available without charge from: Research Publications Office Mail Stop 10-R Educational Testing Service Princeton, NJ 08541 Abstract Computer-based tests administered in established commercial testing centers typically have used monitors of uniform size running at a set resolution. Web-based delivery of tests promises to greatly expand access, but at the price of less standardization in equipment. The current study evaluated the effects of variations in screen size, screen resolution, and presentation delay on verbal and mathematics scores in a sample of 357 college-bound high school juniors. The students were randomly assigned to one of six experimental conditionsóthree screen display conditions crossed with two presentation rate conditions. The three display conditions were: a 17-inch monitor set to a resolution of 1024 x 768, a 17-inch monitor set to a resolution of 640 x 480, and a 15-inch monitor set to a resolution of 640 x 480. Items were presented either with no delay or with a five-second delay between questions (to emulate a sl