PSYCH 120A Chapter Notes - Chapter 5.2: Inattentional Blindness, Change Blindness, Hemispatial Neglect
Document Summary
Early theories of attention suggested that a filter shields you from potential distractors while desired info is not filtered out and goes on to receive further processing. Filtering is rather specific and occurs on a distractor by distractor basis. Participants looked at a fixation target while a + shape was shown to another side. After 3 trials, when the fixation target disappeared, was replaced by one of three shapes then the entire configuration was the mask. Participants were unable to recognize the change in fixation target shape unless given are prior warning. Failed to see anything other than the attended + shape. Inattentional blindness: when participants are not expecting to something, they fail to see changes. Other suggestion: people saw the changes but didn"t remember it. Change blindness: observers" inability to detect changes in scenes they"re looking directly at. Presented one picture after another, both identical but with one minor change.
