If this template helps then use it. If not then just delete and start from scratch.
OS (e.g. Win10): Win10
PsychoPy version (e.g. 1.84.x): 2023.2.3
Standard Standalone? (y/n) If not then what?: y
What are you trying to achieve?:
In my Builder experiment I have a loop in which the conditions variable is set to $selected_set. $selected_set denotes one of three possible Excel files which had been randomly selected when initialising the experiment in a previous routine (i.e. participants can be allocated to one of 3 different blocks of trials).
In my experiment, I want to play videos to participants. Therefore, in each spreadsheet, the column “target” links to an mp4 filename (e.g. M1A1-N.mp4) which is then called by the Movie file variable of the movie component:
The spreadsheet also contains additional information about each video in other columns. For example, the column named “Identity” specifies the identity of the target (e.g. M1). In my stimuli, I have 12 different identities across 108 trials (9 trials per identity). An example of one of the spreadsheets is attached and screenshotted below:
Block 1 Videos.xlsx (24.0 KB)
What code could I use to allow me to ensure that the same identity (e.g. M1) is never presented twice in a row? I presume that this would need to go in a code component within the routine in which the mp4 files are presented, which is called “face_video_presentation”.
What did you try to make it work?:
Nothing yet. ChatGPT suggested an option but it doesn’t look like it understood properly.