Sequential variable and random variables

[dvbridges]

Hi @Fanny, here is a demonstration of shuffling single columns in your conditions file. This will create a new conditions file, which you need to feed into your loop. In the attached example, the shuffled column is called “Prime”, so this will need replacing with “PositionPoint”. E.g.,

import pandas as pd 

# Get condition file
dat = pd.read_excel("your-condition-file.xlsx", index=False)
# Shuffle Prime column
dat.loc[:, 'PositionPoint'] = np.random.permutation(dat['PositionPoint'].values)
# save shuffled dataframe to new spreadsheet ready for loop
dat.to_excel("newCond.xlsx", index=False)

Randomly pulling from two sets of images in a single trial

Hi @KateYang, you can create the AMP using Builder. In the attached example, I created a version of the AMP (based on Payne et al., 2005) without images, but words to describe the stimuli (e.g., prime = pleasant1, target= target1). You can replace the words with pictures. To randomise the prime and target pairings, I have added a few lines of code in a code component which shuffles the prime stimuli, and a new conditions file is created (called “newCond.xlsx”) which is fed to the loop handler: …