A research participant hears a tone followed by a puff of air directed toward his eye. Later, he blinks when he hears the tone. Before ending the experiment, what could the researcher do in order to extinguish the blinking to that tone?
◦ increase the amount of air that is directed toward the eye
◦ increase the loudness of the tone
◦ decrease the loudness of the tone
◦ present the tone alone repeatedly
◦ present the puff of air alone repeatedly