Advertising testing that studies dilation or constriction of the eye in response to stimuli is called:

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The advertising testing that studies dilation or constriction of the eye in response to stimuli is called pupillometrics. Pupillometry measures changes in the size of the pupils, which indicate the level of interest or arousal in response to an advertisement or stimulus. Galvanic skin responses (A) measure changes in the electrical conductance of the skin, while Flesch testing (B) evaluates the readability of written text. Reactive testing (C) is not a specific type of advertising testing.

Advertising Testing That Studies Dilation or Constriction of the Eye