A perception experiment with time-critical graphics animation on the World-Wide Web

Hecht, Heiko; Oesker, Markus; Kaiser, Andreas M.; Civelek, Hakan; Stecker, Thomas

doi:10.3758/bf03200724

Cited by 19 publications

(17 citation statements)

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“…If this is really due to the low performance of the system, it would be better to inform the participant before beginning to produce data that his or her computer is not appropriate for data acquisition. This could be achieved by testing the client's capabilities, as Hecht et al (1999) did. However, in the case of the 486-33DX system, it was due to the strong interference of the simultaneously running programs (an eMail client downloading a big attachment, in this case).…”

Section: Discussionmentioning

confidence: 99%

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An inaccurate-timing filter for reaction time measurement by JAVA applets implementing Internet-based experiments

Eichstaedt

2001

Behavior Research Methods, Instruments, & Computers

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JAVA applets are not accurate enough to measure reaction time unless precautions are taken. A response-filtering technique is introduced that identifies inaccurate measurements by testing whether the client-side JAVA implementation produces false measurements of a time interval of known length during the measured reaction time. Reaction times that indicate such inaccuracy are discarded to increase the reliability of the remaining data. Three studies provide illustrative data on the effectiveness of the new technique, using 11 different computer systems. Study 1 showed differences in the accuracy of different clients and higher variabilityof the obtained means with applets than with native programs. Study 2 showed sharply increased variability when additional loads were imposed on the clients during reaction time measurement. The response-filtering technique diminishes this variability.Study 3 indicated more accurate measurement, with the new technique being able to reveal even smaller differences in difficult technical conditions.

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Section: Discussionmentioning

confidence: 99%

“…One such JAVA-based experiment is that of Hecht, Oesker, Kaiser, Civelek, and Stecker (1999), who studied motion interpolation. Since this involved time-critical graphics animation, they were careful about the accuracy of the client systems.…”

Section: The Problemmentioning

confidence: 99%

An inaccurate-timing filter for reaction time measurement by JAVA applets implementing Internet-based experiments

Eichstaedt

2001

Behavior Research Methods, Instruments, & Computers

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“…That is, some technologies that are suitable for reaction time measurement-such as JAVA applets (Hecht, Oesker, Kaiser, Civelek, & Stecker, 1999) or Adobe Flash (Linnman et al, 2006;Reimers & Stewart, 2007-require special software or plugins that may not be available to all potential participants, and more problematically yet, their availability may vary systematically with the characteristics of the users, thus creating potential confounds (Reips & Krantz, 2010). Also, some technologies have been shown to provide inaccurate timing if no countermeasures are taken (Eichstaedt, 2001).…”

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confidence: 99%

Reaction time effects in lab- versus Web-based research: Experimental evidence

2015

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Although Web-based research is now commonplace, it continues to spur skepticism from reviewers and editors, especially whenever reaction times are of primary interest. Such persistent preconceptions are based on arguments referring to increased variation, the limits of certain software and technologies, and a noteworthy lack of comparisons (between Web and lab) in fully randomized experiments. To provide a critical test, participants were randomly assigned to complete a lexical decision task either (a) in the lab using standard experimental software (E-Prime), (b) in the lab using a browser-based version (written in HTML and JavaScript), or (c) via the Web using the same browser-based version. The classical word frequency effect was typical in size and corresponded to a very large effect in all three conditions. There was no indication that the Web-or browser-based data collection was in any way inferior. In fact, if anything, a larger effect was obtained in the browser-based conditions than in the condition relying on standard experimental software. No differences between Web and lab (within the browser-based conditions) could be observed, thus disconfirming any substantial influence of increased technical or situational variation. In summary, the present experiment contradicts the still common preconception that reaction time effects of only a few hundred milliseconds cannot be detected in Web experiments.Keywords Web . Internet . Response latency . Reaction time . Word frequency effect Over the past two decades, research conducted online via the Internet has become increasingly frequent. Today, Web-based research is common across the whole range of social and behavioral sciences. This trend is not surprising, given the well-documented advantages of Web-based research, especially the possibility to recruit large, heterogeneous (and more representative) samples in less time and with lower costs than in traditional lab-or paper/pencil-based research (for overviews, see

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“…However, when the stimulus is sampled so that it flashes on and off during its motion, errors are made (e.g., Hecht & Hoffman, 2000;Hecht, Oesker, Kaiser, Civelek, & Stecker, 1999). For instance, in a standard motion extrapolation task, an object traverses the screen and then disappears.…”

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confidence: 99%

The impact of spatiotemporal sampling on time-to-contact judgments

Hecht¹,

Kaiser

Savelsbergh

et al. 2002

Perception & Psychophysics

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When motion in the frontoparallel plane is temporally sampled, it is often perceivedto be slower than its continuous counterpart. This finding stands in contrast to humans' ability to extrapolate and anticipate constant-velocitymotion. We investigated whether this sampling bias generalizesto motion in the sagittal plane (i.e., objects approaching the observer).We employed a paradigm in which observers judged the arrival time of an oncoming object. We found detrimental effects of time sampling on both perceived time to contact and time to passage. Observers systematically overestimated the time it would take a frontally approaching object to intersect their eye plane. To rule out artifactsinherent in computer simulation, we replicated the experiment, using real objects. The bias persisted and proved to be robust across a large range of temporal and spatial variations. Energy and pooling mechanisms are discussed in an attempt to understand the effect.

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A perception experiment with time-critical graphics animation on the World-Wide Web

Cited by 19 publications

References 9 publications

An inaccurate-timing filter for reaction time measurement by JAVA applets implementing Internet-based experiments

An inaccurate-timing filter for reaction time measurement by JAVA applets implementing Internet-based experiments

Reaction time effects in lab- versus Web-based research: Experimental evidence

The impact of spatiotemporal sampling on time-to-contact judgments

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