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The impact of visual fidelity on screen-based virtual reality food choices: A randomized pilot study
Bianca Curi Braga1, Pejman Sajjadi2, Mahda Bagher3
1Department of Nutrition, College of Human Health and Development, The Pennsylvania State University, University Park, PA, United States of America.
Objective:
To understand the impact of fidelity and perceived realism on virtual reality food choices, and task motivation, engagement, and interest.
Design:
Randomized controlled trial.
Setting:
Online.
Participants:
84 participants recruited from Amazon Mechanical Turk.
Intervention:
Participants were randomly assigned to either a high- (n = 43) or a low- (n = 41) visual fidelity environment and were asked to select foods to have a meal with a friend.
Main Outcome Measures:
Food choice, motivation of food choices, engagement, and interest.
Analysis:
Simple linear regressions between visual fidelity and perceived realism, and log-linear regressions for visual fidelity or perceived realism on either motivation, interest, or engagement. Poisson models between visual fidelity or perceived realism, and food selections.
Results:
Manipulating visual fidelity was not associated with perceived realism, motivation, interest, or engagement in the food selection task. Perceived realism increased motivation by 0.3% (SE 0.056; p = 0.022), interest by 1.4% (SE 0.002; p<0.001), and engagement by 0.9% (SE 0.001; p<0.001) in the food selection task. High visual fidelity decreased the total number of foods selected (B = 0.216; CI (-0.384; -0.047); p = 0.012).
Conclusion And Implications:
Perceived realism, but not visual fidelity, is important for task related factors like motivation, engagement, and interest. Visual fidelity may influence some food selections.
