“…Tversky et al (2002) also made the point that there was often an unequal amount of information shown between animations and static pictures. Recently, Castro-Alonso et al (2016) identified seven different types of methodological issues in animation research, including appeal bias (e.g., comparing a colour animation to a black and white static image), variety bias (i.e., more visual elements, such as arrows, in the static and not the dynamic visualization), media bias (e.g., comparing static visualisations on paper to animated ones on-screen), realism bias (e.g., comparing realistic movies to abstract illustrations), number bias (i.e., number of images depicted is different in static and animated format), size bias (i.e. one of the visualisations is larger than the other) and interaction bias (i.e.…”