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#1. A young child learns to identify and verbally label both a photograph of a butterfly and a drawing of a hot air balloon by saying, ‘It flies’ Despite the lack of obvious physical or topographical similarities between a butterfly and a hot air balloon, these two distinct visual stimuli consistently evoke the same verbal response. This phenomenon is an example of the formation of what type of stimulus class?
An arbitrary stimulus class is a set of stimuli that evoke the same response but do not share common physical features or topographies The members of the class are grouped together based on their shared function or the common responses they evoke rather than on their physical form In this scenario a butterfly and a hot air balloon are topographically dissimilar they look very different yet both consistently function to evoke the verbal response It flies This grouping based on a shared function flying despite visual differences is a defining characteristic of an arbitrary stimulus class A response class refers to a group of responses that produce the same effect on the environment or serve the same function eg different ways to open a door The question is specifically asking about the classification of stimuli not responses A feature stimulus class sometimes referred to as a concept in ABA consists of stimuli that share common physical features or properties eg all red objects all round objects all objects with wings Butterflies and hot air balloons do not share significant topographical features that would place them in a feature stimulus class based on their appearance alone A consequence class is not a standard or formal term in Applied Behavior Analysis consequences are events that follow behavior and affect its future probability whereas these are antecedent stimuli
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