GENERIC PROGRAM FOR BALANCED IDENTITY DESIGN copyright by A. G. Greenwald, IAT Corp, November, 2001. ************************************************************************ * THIS PROGRAM SHOULD NOT BE DISTRIBUTED TO OTHERS. ANYONE INTERESTED * * IN OBTAINING A CURRENT VERSION SHOULD CONTACT agg@u.washington.edu * ************************************************************************ IMPORTANT: When Inquisit completes running and you see a black screen with Inquisit in small white print in the center, Type Ctrl-End in order to proceed. This screen lock feature (which can be removed by removing the "/ endlock = true" line from the "defaults" object in the program) is designed to prevent subjects from playing with the operating system after an experiment program terminates. ------------------- GENERAL DESCRIPTION ------------------- IATs are created from this script by substituting needed stimuli in various locations in the script. This document is designed so that all of these replacements can be made using MS Word's merge capability (see further, below). The needed substitutions are: - 1 Filename to be used as the name of the generated IAT(BID) procedure - 2 labels, 1 for each of two social group concepts (e.g., male and female) - up to 6 (min. 3) stimulus items to represent each of the two social groups - count of the number of stimulus items for each social group concept (3, 4, 5, or 6) - 'word' or 'picture' to indicate whether social concept items are words or pictures - 2 labels, 1 for each of two trait concepts (e.g., math and arts) - up to 6 (min. 3) stimulus items to represent each of the two trait concepts - count of the number of stimulus items for each trait concept (3, 4, 5, or 6) - 'word' or 'picture' to indicate whether trait items are words or pictures Note: If pictures are used as stimuli, the stimulus items to be entered in the merge data document are the filenames of these pictures (e.g., .bmp, .gif, .pct, or .jpg files, including the extension as part of the name) The program generated by the merge will run with Millisecond Software's Inquisit laboratory software package. A free demo version of Inquisit can be obtained at http://millisecond.com. Inquisit requires a Windows operating system. Please note that Inquisit is a commercial product. If a decision is made to use Inquisit on a sustained basis, a suitable license should be purchased from Millisecond Software. ---------------------- OPERATING INSTRUCTIONS (A): CREAING THE .EXP FILE ---------------------- In order to run one of the several IATs that are provided as examples, start the following instructions from Step 7. In order to create your own new IAT using MS Word's Merge capability, follow these instructions from the beginning (Step 1). NOTE: WHAT YOU HAVE TO DO IN STEPS (2)-(3) AND (7)-(8) MAY VARY DEPENDING ON YOUR VERSION OF MS WORD AND YOUR OPERATING SYSTEM. (1) Open the document ('GenericBIDform.mmddyy.doc'). It should open up as a Merge document with the associated data source 'GenericBIDdata.doc' (2) Open the Merge Helper by selecting Mail Merge under the Tools menu. (3) Under Step 2 (Data Source), select Edit, then click on the name of the data source ('GenericIATdata.mmddyy.doc') (4) The data source will open up as a form. Enter the needed items as appropriate for the IAT you wish to create (see the above list). These can be entered in a new, blank record after whatever records you find currently in the data source. (5) When finished, click OK (6) Save the changes that you have just made in the data source file by saving the new version of that file under the same name as the previous version. (7) At the Tools menu, click Mail Merge (8) Go to Step 3, click on Merge. In the Merge dialog box that opens up, make sure that the desired record number that you wish to use for the merge is selected. (This will be the last record if you have just created your own IAT.) Leave the default specification that the merge should output to a new document window. IMPORTANT: Specify that the merge should use ONLY the ONE record that you want. (9) At the File menu, click Save As, then (10) Provide an appropriate file name and give it an 'exp' extension (11) Select Text Only (*.txt) in the Save as type field under the filename, and click Yes (to save) when Word warns you that you may lose information. Make sure that you save into the desired folder. (12) Run the new IAT either by double clicking the new .exp file in Windows Explorer or by starting Inquisit and having it run the new .exp file. ----------- OTHER NOTES ----------- 1. Odd-numbered and even-numbered subjects differ in the order in which the three component IATs of the balanced identity design are encountered. 2. The file 'GenericBIDsyntax.sps' will analyze data using SPSS for Windows. Some knowledge of SPSS will be required to modify this to do analyses beyond producing summary IAT effect measures. [This capability not yet completed as of 11/3/01.] 3. The procedure starts with a computer-administered informed consent procedure that is standard in most studies using the IAT at University of Washington. That can be deleted or modified by deleting or modifying some or all of the 'preinstructions' pages of the 'expt' object at the very beginning of the program, below. The relevant pages are the ones named overview1, overview2, overview4, overview5, and consent. Their texts can be found near the bottom of the program. 4. Use of the program with numbers of stimulus items other than 4, 5, or 6 can be done by modifying the Inquisit script suitably. This will require some knowledge of Inquisit. ---------------------- OPERATING INSTRUCTIONS (B): CREAING THE .SPS FILE [not yet available as of 11/3/01] ---------------------- NOTE: THIS ASSUMES (a) THAT SPSS FOR WINDOWS IS INSTALLED ON YOUR COMPUTER, and (b) THAT YOU HAVE ALREADY OBTAINED A .dat FILE BY RUNNING AN .EXP FILE AS ABOVE. (1) Open the document ('GenericBIDsyntax.mmddyy.doc'). It should open up as a Merge document with the associated data source 'GenericBIDdata.doc' (2) At the Tools menu, click Mail Merge (3) Go to Step 3, Click Merge. In the new box that opens up, first make sure that the desired record number that you wish to use for the merge is selected. (This will be the last record if you have just created your own IAT.) Leave the default specification that the merge should output to a new document window. IMPORTANT: Specify that the merge should use ONLY the ONE record that you want. (4) At the File menu, click Save As, then (5) Provide an appropriate file name and give it an 'sps' extension (6) Select Text Only (*.txt) in the Save as type field under the filename, and click Yes (to save) when Word warns you that you may lose information. Make sure that you save into the desired folder. (7) Open the syntax file in SPSS by double clicking the new .sps file in Windows Explorer.