Table 1 Brief descriptions of the items in the Theory of Mind Scale.

Diverse Desires (DD)

The child is asked if they prefer to eat a cookie or a carrot. The child is then told that the agent (robot or human) prefers to eat the opposite. The child is asked what the agent will choose.

Diverse Beliefs (DB)

The child is asked whether they think the agent’s (robot or human) cat is hiding in the bushes or the garage. The child is told the agent believes the cat is hiding in the opposite location. The child is asked where the agent will look for the cat.

Knowledge Access (KA)

The child sees what’s inside a box. The child is told the agent (robot or human) has never seen inside the box. The child is asked whether the agent knows what is inside the box. The child is also asked if the agent has seen inside the box.

Contents False Belief (FB)

The child is shown a box of crayons and is asked what they believe is inside. The researcher opens the box and reveals a toy pig inside the box of crayons. The agent (robot or human) is introduced, and the child is told that the agent has never seen inside the box of crayons. The child is asked what the agent will think is inside the box of crayons and whether the agent had seen inside the box?

Hidden Emotion (HE)

The child is asked to judge how the agent (robot or human) feels inside and how the agent actually looks on their face.