Presentation accuracy of Web animation methods

Schmidt, William C.

doi:10.3758/bf03195365

Cited by 35 publications

(40 citation statements)

References 17 publications

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“…These factors make it more difficult to exert consistent control over the timing of the visual stimuli. Although Schmidt's (2001) main interest was to investigate the accuracy of internet-based experiments compared to experiments implemented using local software, the author reported that the accuracy of all but one of the programs tested was affected by the speed of the system used in the test. These results suggest that it is important to perform a timing test using the specific system that will be used for the experiment because the accuracy changes with different systems.…”

Section: Introductionmentioning

confidence: 99%

“…As reviewed above, there are different testing methods available that generally use some type of photo/opto detector system (Garaizar et al, 2014;Plant & Turner, 2009;Schmidt, 2001). While photo/opto detector systems may be most commonly used, they are expensive.…”

Section: Introductionmentioning

confidence: 99%

“…Internet-based programs perform with more variability than paradigms using local computer software because software and hardware are not as well controlled when remote software runs the experiment. Whereas local computer software can access the operating system and hardware relatively directly, internet experiments generally operate through mediating software (like web browsers) and are subject to effects from the Internet, such as random delays in information transmission (Schmidt, 2001). These factors make it more difficult to exert consistent control over the timing of the visual stimuli.…”

Section: Introductionmentioning

confidence: 99%

“…The Garaizar et al study supports testing the accuracy of timing in visual tasks because errors were related to the timing technology in the displays and the operating systems. Schmidt (2001) investigated accuracy in the presentation of visual stimuli by internet-based psychophysics programs using a photo detector system. Internet-based programs perform with more variability than paradigms using local computer software because software and hardware are not as well controlled when remote software runs the experiment.…”

Section: Introductionmentioning

confidence: 99%

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Testing the accuracy of timing reports in visual timing tasks with a consumer-grade digital camera

2016

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This study tested the accuracy of a visual timing task using a readily available and relatively inexpensive consumer grade digital camera. A visual inspection time task was recorded using short high-speed video clips and the timing as reported by the task's program was compared to the timing as recorded in the video clips. Discrepancies in these two timing reports were investigated further and based on display refresh rate, a decision was made whether the discrepancy was large enough to affect the results as reported by the task. In this particular study, the errors in timing were not large enough to impact the results of the study. The procedure presented in this article offers an alternative method for performing a timing test, which uses readily available hardware and can be used to test the timing in any software program on any operating system and display.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Testing the accuracy of timing reports in visual timing tasks with a consumer-grade digital camera

2016

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“…For experiments involving graphical sequences of images, experimenters have a wide range of options (see Schmidt, 2001, for an overview) from client-side programming of the animation sequence (i.e., using Authorware, Java, or JScript/Javascript) to using plug-ins or built-in browser support for presenting animations in a particular animation format (i.e., Authorware, Flash, or Quicktime animations require plug-ins, whereas animated GIFs do not).…”

mentioning

confidence: 99%