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Table 1 Mean durations of the interaction phases in Experiment 1

From: Towards efficient human–machine collaboration: effects of gaze-driven feedback and engagement on performance

Instructional ambiguity

Feedback specificity

Instruction

Identification

Grasp

Total time

  

[s]

[s]

[s]

[s]

Unambiguous

Absent

7.21

2.17

4.93

14.31

Ambiguous

Underspecified

2.81

7.22

7.52

17.56

Uunambiguous

Contrastive

7.23

1.27

4.25

12.75

Ambiguous

Contrastive

2.80

4.21

4.94

11.96

  1. The first two rows refer to the underspecified feedback group and the last two rows refer to the contrastive feedback group