___________________________________________________________________________________________________________________ INATTENTIONAL BLINDNESS- Computerized Input ___________________________________________________________________________________________________________________ Script Author: An Raes last updated: 02-23-2022 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC Note: this script is based on An Raes' original inattentionalblindness.iqx script that collects the input on paper and pencil ___________________________________________________________________________________________________________________ BACKGROUND INFO ___________________________________________________________________________________________________________________ This script runs an Inattentional Blindness Task adapted from: Most, S. B., Simons, D. J., Scholl, B. J., Jimenez, R., Clifford, E., & Chabris, C. F. (2001). How not to be seen: The contribution of similarity and selective ignoring to sustained inattentional blindness. Psychological Science, 12, 9-17. ___________________________________________________________________________________________________________________ TASK DESCRIPTION ___________________________________________________________________________________________________________________ Participants view several videos that depict members of 4 spider-like figures in white and black floating around in a field. The task is to count how often a certain kind of figure bumps into the walls. At some point during the experiment, a black spider 'walks' through the field from right to left. ___________________________________________________________________________________________________________________ DURATION ___________________________________________________________________________________________________________________ the default set-up of the script takes appr. 5 minutes to complete ___________________________________________________________________________________________________________________ DATA FILE INFORMATION ___________________________________________________________________________________________________________________ The default data stored in the data files are: (1) Raw data file: 'inattentionalblindness_compinput_raw*.iqdat' (a separate file for each participant) build: The specific Inquisit version used (the 'build') that was run computer.platform: the platform the script was run on (win/mac/ios/android) date, time: date and time script was run subject, group, with the current subject/groupnumber session: with the current session id blockcode, blocknum: the name and number of the current block (built-in Inquisit variable) trialcode, trialnum: the name and number of the currently recorded trial (built-in Inquisit variable) Note: trialnum is a built-in Inquisit variable; it counts all trials run; even those that do not store data to the data file such as feedback trials stimulusitem: the presented stimuli in order of trial presentation response: the participant's response (scancode of response buttons) latency: the response latency (in ms) notice_critical: 1 =participant noticed something during critical trial; 0 = otherwise response_critical: contains the detailed description of the stimulus noticed during the critical trial (2) Summary data file: 'inattentionalblindness_compinput_summary*.iqdat' (a separate file for each participant) inquisit.version: Inquisit version run computer.platform: the platform the script was run on (win/mac/ios/android) startDate: date script was run startTime: time script was started subjectid: assigned subject id number groupid: assigned group id number sessionid: assigned session id number elapsedTime: time it took to run script (in ms); measured from onset to offset of script completed: 0 = script was not completed (prematurely aborted); 1 = script was completed (all conditions run) notice_critical: 1 =participant noticed something during critical trial; 0 = otherwise response_critical: contains the detailed description of the stimulus noticed during the critical trial ___________________________________________________________________________________________________________________ EXPERIMENTAL SET-UP ___________________________________________________________________________________________________________________ 2 trials that present videos without target 2 trials that present video with a target (here: spider) without target alert -> however, instructions at the end ask whether something unusual was noticed 1 trial that presents video with a target with explicit target alert ___________________________________________________________________________________________________________________ STIMULI ___________________________________________________________________________________________________________________ see section Editable Stimuli ___________________________________________________________________________________________________________________ INSTRUCTIONS ___________________________________________________________________________________________________________________ see section Editable Instructions ___________________________________________________________________________________________________________________ EDITABLE CODE ___________________________________________________________________________________________________________________ check below for (relatively) easily editable parameters, stimuli, instructions etc. Keep in mind that you can use this script as a template and therefore always "mess" with the entire code to further customize your experiment.