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Automated vision occlusion-timing instrument for perception–action research

- Brenton, John, Müller, Sean, Rhodes, Robbie, Finch, Brad

  • Authors: Brenton, John , Müller, Sean , Rhodes, Robbie , Finch, Brad
  • Date: 2018
  • Type: Text , Journal article
  • Relation: Behavior Research Methods Vol. 50, no. 1 (2018), p. 228-235
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  • Description: Vision occlusion spectacles are a highly valuable instrument for visual-perception–action research in a variety of disciplines. In sports, occlusion spectacles have enabled invaluable knowledge to be obtained about the superior capability of experts to use visual information to guide actions within in-situ settings. Triggering the spectacles to occlude a performer’s vision at a precise time in an opponent’s action or object flight has been problematic, due to experimenter error in using a manual buttonpress approach. This article describes a new laser curtain wireless trigger for vision occlusion spectacles that is portable and fast in terms of its transmission time. The laser curtain can be positioned in a variety of orientations to accept a motion trigger, such as a cricket bowler’s arm that distorts the lasers, which then activates a wireless signal for the occlusion spectacles to change from transparent to opaque, which occurs in only 8 ms. Results are reported from calculations done in an electronics laboratory, as well as from tests in a performance laboratory with a cricket bowler and a baseball pitcher, which verified this short time delay before vision occlusion. In addition, our results show that occlusion consistently occurred when it was intended—that is, near ball release and during mid-ball-flight. Only 8% of the collected data trials were unusable. The laser curtain improves upon the limitations of existing vision occlusion spectacle triggers, indicating that it is a valuable instrument for perception–action research in a variety of disciplines. © 2017, Psychonomic Society, Inc.

Can intelligent agents improve data quality in online questionnaires? A pilot study

- Söderström, Arne, Shatte, Adrian, Fuller-Tyszkiewicz, Matthew

  • Authors: Söderström, Arne , Shatte, Adrian , Fuller-Tyszkiewicz, Matthew
  • Date: 2021
  • Type: Text , Journal article
  • Relation: Behavior Research Methods Vol. 53, no. 5 (2021), p. 2238-2251
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  • Description: We explored the utility of chatbots for improving data quality arising from collection via sonline surveys. Three-hundred Australian adults sampled via Prolific Academic were randomized across chatbot-supported or unassisted online questionnaire conditions. The questionnaire comprised validated measures, along with challenge items formulated to be confusing yet aligned with the validated targets. The chatbot condition provided optional assistance with item clarity via a virtual support agent. Chatbot use and user satisfaction were measured through session logs and user feedback. Data quality was operationalized as between-group differences in relationships among validated and challenge measures. Findings broadly supported chatbot utility for online surveys, showing that most participants with chatbot access utilized it, found it helpful, and demonstrated modestly improved data quality (vs. controls). Absence of confusion for one challenge item is believed to have contributed to an underestimated effect. Findings show that assistive chatbots can enhance data quality, will be utilized by many participants if available, and are perceived as beneficial by most users. Scope constraints for this pilot study are believed to have led to underestimated effects. Future testing with longer-form questionnaires incorporating expanded item difficulty may further understanding of chatbot utility for survey completion and data quality. © 2021, The Psychonomic Society, Inc.
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