handling participants payment

Comments

• DahmSF

  February 2022

  I have solved it this way now:

  At the beginning I create a random subject_nr (which is also missing in the data from JATOS):

  vars.subject_nr = Math.floor(Math.random() * 100000000000) + 1
  

  This number is then used for counterbalancing, for instance:

  if (vars.subject_nr%4 ==1) {vars.GP='ERR'}
  else if (vars.subject_nr%4 ==2) {vars.GP='RT'}
  else if (vars.subject_nr%4 ==3) {vars.GP='RT+ERR'}
  else if (vars.subject_nr%4 ==0) {vars.GP='NO'}
  

  In the last 'Thank you for participation' instruction I include the [subject_nr] in the sketchpad plus my contat email.

  Participants who are looking for a reward can send this number per Email to get the reward.

  Although not very likely, I may get the same subject_nr twice. Therefore: If there is a more elegant option, please let me know. 😃