PMC6026798_01
Spectral and durational values of vowel stimuli.
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F1
Figure 1. For each AXB trial, A and B were the endpoints of one continuum (one side of the rectangular), and X could either be one of the two endpoints or one of the five vowels in-between.
Example item from the Santa Barbara Solids Test (Cohen and Hegarty,: 869). The top depicts a three-dimensional object and a plane cutting this object vertically, the bottom displays four cross-sections as answer choices ((c) being the correct answer, and (d) the distracter without change in view perspective).
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F2
The answers include one egocentric distracter that represents the shape that a participant who fails to change her perspective would choose, providing a way to differentiate whether a perspective change away from egocentric was made or not; see the example in Figure 2.