Computational protocol: I Reach Faster When I See You Look: Gaze Effects in Human–Human and Human–Robot Face-to-Face Cooperation

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Protocol publication

[…] Statistical analysis was realized by using repeated measures ANOVA with the software package Statistica. The dependent variable is completion time for the different phases of the task. The independent variables are Phase, Glasses (with and without), and Role (referent as manipulator and subject as manipulator) to focus on the effect of hiding the informer’s gaze from the manipulator. Post hoc analysis was provided by planned comparisons. The significance level was established at a 95% confidence interval.Figure illustrates the effects of sun glasses on the durations of the four experimental phases. Examining the four phases, comparing the glasses-on to glasses-off, it appears that the glasses effect is strongest in the Location phase. The differential effect of the glasses-on duration performance in each phases was 86 ms (Instruction), 19 ms (Search), 233 ms (Location), and 26 ms (Move). Thus, the 233 ms effect in location phase was by far the largest. This observation was confirmed by the repeated measures ANOVA. Overall there was a small and non-significant main effect of glasses [F(1, 4) = 5.5, p = 0.08] with durations with glasses at 1.04 s, and without at 0.95 s. The Role effect was highly non-significant [F(1, 4) = 0.6, p = 0.5] indicating that the mapping of referent and subject to informer and manipulator had no influence on performance. The Phase effect was highly significant [F(3, 12) = 42.1, p < 0.0001] simply reflecting the fact that the different phase have different durations. Most important, the only interaction that approached significance was the Glasses × Phase [F(3, 12) = 3.4, p = 0.05]. Planned comparisons revealed that the informer wearing glasses had a significant effect only in the Location phase with p < 0.001. In the other three phases the glasses had no effect (p > 0.1). This confirms that the manipulator relies on informer gaze in order to locate and reach to the target cube. When informer’s gaze is blocked, the manipulator’s location time is significantly increased. […]

Pipeline specifications

Software tools Statistica, MCID
Applications Miscellaneous, MS-based untargeted metabolomics
Organisms Homo sapiens