  This study investigated how wait time influences trust in and reliance on a
robot. Experiment 1 was conducted as an online experiment manipulating the wait
time for the task partner's action from 1 to 20 seconds and the
anthropomorphism of the partner. As a result, the anthropomorphism influenced
trust in the partner and did not influence reliance on the partner. However,
the wait time negatively influenced trust in and reliance on the partner.
Moreover, a mediation effect of trust from the wait time on reliance on the
partner was confirmed. Experiment 2 was conducted to confirm the effects of
wait time on trust and reliance in a human-robot face-to-face situation. As a
result, the same effects of wait time found in Experiment 1 were confirmed.
This study revealed that wait time is a strong and controllable factor that
influences trust in and reliance on a robot.
