Infinity Reader: Working Memory Interference in large words and/or randomly selected words

The Infinity Reader App (Infinity): Have a new system to approach Speed-reading.
Based on Word acceleration (Speed-Memory) on the RSVP and (Dual N-back Interference or Tricky Stimulus) in large words or created in randomly words (configurable).

New Features

Now I added Interference or tricky stimulus in random words and/or large words (default configuration). This situation means that when you have a large word the App return two words or one word before in the text and then continue to the next words.

Studies that recommend tricky stimulus in Working Memory Training.

https://www.ncbi.nlm.nih.gov/pubmed/23982078
https://www.ncbi.nlm.nih.gov/pubmed/21787103

Test the App Online: http://competicionmental.appspot.com/router?page=infinity&en=1

Code:

//tricky: nexTricky (can I return?), n("tricky") configurable random tricky stimulus
  if(_.random(1,100)<=n("tricky") && position-2>=0 && nexTricky==0 || ( word_length>=8 && position-2>=0 && nexTricky==0 ) ){

    nexTricky=0;
    
    if(_.random(0,1)){ maxTricky=2; position-=wordsByFlash; }else{ maxTricky=3; position-=wordsByFlash*2; }

  }else{
    posicion+=wordsByFlash;
  }

//prevent no to do double, triple ... tricky stimulus
  if(nexTricky==maxTricky){ nexTricky=0; }else{ nexTricky++; }

Video: First minute tricky stimulus only on large words next minute (tricky stimulus) on 25% of words

RSVP defintion: https://en.wikipedia.org/wiki/Rapid_serial_visual_presentation

https://creativecommons.org/licenses/by-sa/4.0/legalcode
Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)

Thanks!