The Use of Iambic Pentameter in the

property. Primes were therefore ambiguous with respect to how the central pushbutton
should be grouped. Common region and connectedness were the Gestalt grouping
properties depicted in the primes.
The color of common region and connectedness was counterbalanced. In one
stimulus type, common region was depicted in light gray and connectedness was depicted
in dark gray, as seen in Figure 22A. In a second stimulus type, common region was
depicted in dark gray and connectedness was depicted in light gray, as seen in Figure
22B. Neutral primes were also created in which a central pushbutton did not group with
the pushbuttons on either the right or the left hand side (see Figure 22C).
A mirror reflection of each of the described primes was created so as not to bias
right or left side grouping responses. In summary, a total of 4 primes were created (2
achromatic color schemes X 2 mirror reflections).
Targets. Unambiguous target stimuli contained a central pushbutton that could
group with a pushbutton on either side by either global or local interpretation of the
primes, but not by both. Two target stimuli were created for each prime. One depicted the
unambiguous global grouping interpretation of the prime and the other depicted the
unambiguous local grouping interpretation. For example, with respect to Figure 22A,
Figure 23A is the unambiguous global grouping interpretation and Figure 23B is the
unambiguous local grouping interpretation. Because there were four primes and two
targets for each prime, there were a total of eight targets.
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