Table 2.

Variable definitions and sampling of trial parameters.

Variable	Acronym	Definition and sampling distribution
Relative capacity	RC	RC represents the relation between the containers' capacities, defined as $RC=\frac{targetcapacity}{sourcecapacity}$. Sampled from a truncated Gaussian distribution ${\mathcal{N}}_{trunc.}(\mu =1.0,\sigma =0.25,min=0.5,max=2.0)$. RC < 1 corresponds to target containers of lower capacity, and RC > 1 to target containers of larger capacity.
Fullness	FU	FU expresses the fullness level of the source container as a fraction. Sampled from ${\mathcal{N}}_{trunc.}(\mu =0.7,\sigma =0.2,min=0.3,max=1.0)$. For example, FU = 0.5 corresponds to a half-full source container.
Relative diameter	RD	RD represents the relation between the container rim diameters, defined as $RD=\frac{targetdiameter}{sourcediameter}$. Sampled from ${\mathcal{N}}_{trunc.}(\mu =1.0,\sigma =0.25,min=0.5,max=1.5)$. RD < 1 corresponds to target containers of smaller diameter, and RD > 1 corresponds to target containers of larger diameter. The target container's height and diameter were determined based on the sampled RC and RD.
Relative volume	RV	RV represents the volume relation between the poured amount and the target container's capacity, defined as $RV=\frac{pouredvolume}{targetcapacity}$. RV < 1 indicates that the poured amount fits into the target container, and RV > 1 indicates that the poured amount exceeds the target container's capacity.
Spillage	S	Binary variable indicating whether or not spillage occurred.