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Document Type

Article

Abstract

The purpose of this study was to teach children fractiondecimal
equivalence using the respondent-type training procedure
and test for any emergent generalization. In the first experiment,
subjects were respondently trained on the conditional
discriminations; A 1--.8 1, A2--.82, and tested 8 1-A 1, 82-A2.
Subjects were then trained on the conditional discriminations
C1 --.81 , C2--.82 and tested 81-C1, 82-C2. Subjects were
subsequently tested for the emergence of the untrained relations
A-C and C-A. When subjects were presented with the Stimulus A 1
they observed 1/4 and when subjects were presented with A2 they
observed 214. When subjects were presented with 81 they
observed a circle with the upper left quarter shaded and when
subjects were presented with 82 they observed a circle divided
into four quarters with the upper half shaded. When subjects were
presented with C1 they observed 0.25 and when subjects were
presented with C2 they observed 0.50. Experiment 2 was identical
to Experiment 1 except that subjects were administered three
generalization tests. In Generalization Test Number 1, the Stimuli
A 1, A2, C1 , and C2 served as samples and shapes not seen in
training but with the same shaded areas served as comparison
stimuli. Generalization Test No.2 was identical to the previous test,
except that the comparison stimuli consisted of a shape not seen
in training and the shaded area was altered. Generalization Test
No. 3 was identical to the previous two tests except that the
comparison stimuli were altered in that the number of shaded and
unshaded areas was increased. Experiment 3 was identical to
Experiment 2 except that an extra generalization test was added
to the experiment. This test was identical to Generalization Test
No. 3 of Experiment 2, except that the shaded areas were
contiguous with each other.
In Experiment 1, subjects were successful on all equivalencetests. In Experiment 2, subjects were successful on all equivalence
tests and 50% of subjects successfully completed the final
generalization tests. In Experiment 3, subjects were successful on
all equivalence tests and on all generalization tests.

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