Baby Stephanie stops sucking her thumb to listen to a tone.She resumes sucking and stops again when the tone sounds again.Later,after the tone has been repeated a number of times,she ignores it.This is an example of

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This is an example of habituation, which is a decrease in response to a stimulus after repeated presentations. Baby Stephanie initially responds to the tone by stopping sucking her thumb, but over time, as the tone is repeated, she becomes used to it and no longer stops, indicating she has habituated to the stimulus.

Baby Stephanie Stops Sucking Her Thumb to Listen to a Tone.She