The Use of Iambic Pentameter in the

Figure 23. Targets used in reported experiments
A
Note. (a) Example unambiguous target. The central pushbutton groups with the pushbutton to the left. Relative to the
experimental stimulus that it was modeled after, the central pushbutton groups by global properties. (b) Example
unambiguous target. The central pushbutton groups with the pushbutton to the right. Relative to the experimental
stimulus that it was modeled after, the central pushbutton groups by local properties.
Practice stimuli. Practice stimuli contained a central pushbutton that could group
with either a pushbutton to its right or left by the Gestalt principle of proximity (see
Figure 24). Practice stimuli were therefore unambiguous with respect to how the central
pushbutton should be grouped. The grouping principle of proximity was chosen, as
opposed to other principles, because it is not presented in the prime or target stimuli.
Participants therefore learned to group the pushbuttons in these practice displays without
being biased toward grouping by a particular grouping principle depicted in the
experimental stimuli.
Figure 24. Practice stimuli used in reported experiments
A B
Note. (a) Unambiguous practice stimulus. Central pushbutton groups with pushbutton on the left hand side by
proximity. (b) Unambiguous practice stimulus. Central pushbutton groups with pushbutton on the right hand side by
proximity.
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B