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In this visual perception task, you will evaluate a cross briefly presented at the center of the screen, where one arm (either horizontal or vertical) is longer than the other. Your primary goal is to identify which arm is longer after a fixation display. You'll proceed through eight trials, making responses regarding the cross length and noting any additional shapes or distractors you notice. This task aims to explore your attention and perception abilities under quick visual presentations.
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Instructions • In the following eight trials you will see a cross presented, briefly, at the center of the screen. • One of the arms (horizontal or vertical) is longer than the other. For example: Vertical Arm is Longer Horizontal Arm is Longer
Instructions • Your task is to focus on the cross and decide which arm (horizontal or vertical) is longer. • The display is preceded by a fixation display that contains a plus sign. This is to focus your attention. • The cross display is presented quickly (0.2 second) • The cross display is followed by a “mask.” + Fixation Cross Display Mask
Trial 1: Press SPACEBAR when told
Trial 1: Which arm was longer? • Circle horizontal or vertical on your response sheet
Trial 2: Press SPACEBAR when told
Trial 2: Which arm was longer? • Circle horizontal or vertical on your response sheet
Trial 3: Press SPACEBAR when told
Trial 3: Which arm was longer? • Circle horizontal or vertical on your response sheet
Trial 4: Press SPACEBAR when told
Trial 4: Which arm was longer? • Circle horizontal or vertical on your response sheet
Trial 4: Did you notice anything else that you did not notice on the preceding three trials? • Write yes or no on your response sheet • Label this answer as “Trial 4a”
Trial 4: If you answered yes, what did you see? • Select one of the following shapes and write the corresponding number on the response sheet. • Label this answer as Trial 4b: 1 2 3 4 5 6
Trial 4: If you answered yes, in which quadrant you see the item? • Select one quadrant and write the corresponding number on the response sheet. • Label this answer as Trial 4c: 1 2 4 3
Trial 5: Press SPACEBAR when told
Trial 5: Which arm was longer? • Circle horizontal or vertical on your response sheet
Trial 6: Press SPACEBAR when told
Trial 6: Which arm was longer? • Circle horizontal or vertical on your response sheet
Trial 7: Press SPACEBAR when told
Trial 7: Which arm was longer? • Circle horizontal or vertical on your response sheet
Trial 7: Did you notice anything other than the cross? • Write yes or no on your response sheet • Label this answer as “Trial 7a”
Trial 7: If you answered yes, what did you see? • Select one of the following shapes and write the corresponding number on the response sheet. • Label this answer as Trial 7b: 1 2 3 4 5 6
Trial 7: If you answered yes, in which quadrant you see the item? • Select one quadrant and write the corresponding number on the response sheet. • Label this answer as Trial 7c: 1 2 4 3
Trial 8: On this trial, do not do the line judgment task. Just watch the whole display. Press SPACEBAR when told
Trial 8: Did you notice anything other than the cross? • Write yes or no on your response sheet • Label this answer as “Trial 8a”
Trial 8: If you answered yes, what did you see? • Select one of the following shapes and write the corresponding number on the response sheet. • Label this answer as Trial 8b: 1 2 3 4 5 6
Trial 8: If you answered yes, in which quadrant you see the item? • Select one quadrant and write the corresponding number on the response sheet. • Label this answer as Trial 8c: 1 2 4 3