Jumping Position of my Stimuli

[visto2001]

Hi everyone,

I’m currently building an experiment in FindingFive that combines aspects of the Stroop and Flanker tasks. In this setup, I need to display two stimuli side by side—one on the left and one on the right. It’s crucial that these stimuli stay fixed in their positions throughout the experiment to avoid any visual shifts that might affect participants’ attention or reaction times.

I’ve already tried using the "location" and "fixed_location" options, and the positioning looks almost right. However, I’m still seeing a slight “jumping” or shifting of the text stimuli between trials, which is a problem for the design.

Does anyone know how to make sure the stimuli remain completely stable in their assigned left/right positions across all trials?

Any help would be greatly appreciated!

Thanks so much in advance!

Best,
Vivienne

Here is my code from my trial template so far: 

{
  "match":{
  "type":"basic",
  "stimuli":[
    {"which": ["BLAU_black", "GRÜN_blau_match"], "location": [4, 6]},
    {"which": ["BLAU_black", "ROT_blau_match"], "location": [4, 6],
    "fixed_location": true}],
  "stimulus_pattern":{"order":"fixed"},
  "responses":["response_matching"], "location":[8]
  },
 
  "mismatch":{
  "type":"basic",
  "stimuli": [
    {"which": ["BLAU_black", "GELB_lila_mismatch"], "location": [4, 6]},
    {"which": ["BLAU_black", "ROT_grün_mismatch"], "location": [4, 6],
    "fixed_location": true}],
  "stimulus_pattern":{"order":"fixed"},
  "responses":["response_matching"]
  }
 
}