Different sequence for group?

[OwenJames]

Hello! I am trying to make my experiment have 2 groups ( A and B) and each group needs to do 7 experimental blocks, only Block A needs to have a different order of the blocks (a set order) than group B. Here is a link: https://farm.pcibex.net/r/bDpPaf/ and I commented the code with which I tried this, but this is the code:

Template(
  GetTable( "items.csv" )
            .setGroupColumn( "blockorder" ),
  variable =>          
  
 newVar("blockorder").set(variable.blockorder).global().log())
 
if (getVar("blockorder") == "A") 

Sequence( "Consent",  "block1Instructions", rshuffle("block1"), "block2Instructions", rshuffle("block2"), "block3Instructions", rshuffle("block3"), "block4Instructions", rshuffle("block4"), "block5Instructions", rshuffle("block5"), "block6Instructions", rshuffle("block6"), "block7Instructions", rshuffle("block7"), SendResults() , "Thankyou" )
//use different sequence per group
else
Sequence( "Consent",  "block1Instructions", rshuffle("block1"), "block2Instructions", rshuffle("block2"), "block3Instructions", rshuffle("block3"), "block6Instructions", rshuffle("block6"), "block7Instructions", rshuffle("block7"), "block4Instructions", rshuffle("block4"), "block5Instructions", rshuffle("block5"), SendResults() , "Thankyou" )

I get an error with the blockorder variable (use of labelname unknown).

[Jeremy]

Hi,

Use __counter_value_from_server__ to conditionally execute different Sequence commands:

if (__counter_value_from_server__ % 2)
  Sequence( "Consent",  "block1Instructions", rshuffle("block1"), "block2Instructions", rshuffle("block2"), "block3Instructions", rshuffle("block3"), "block6Instructions", rshuffle("block6"), "block7Instructions", rshuffle("block7"), "block4Instructions", rshuffle("block4"), "block5Instructions", rshuffle("block5"), SendResults() , "Thankyou" )
else
  Sequence( "Consent",  "block1Instructions", rshuffle("block1"), "block2Instructions", rshuffle("block2"), "block3Instructions", rshuffle("block3"), "block4Instructions", rshuffle("block4"), "block5Instructions", rshuffle("block5"), "block6Instructions", rshuffle("block6"), "block7Instructions", rshuffle("block7"), SendResults() , "Thankyou" )

Template executes its function after the core of the script, so the Var element “blockorder” will not have received its value by the time your if is executed. Also, getVar("blockorder") returns a pointer to the javascript object that represents the Var element, which PennController knows how to interpret, but if you just reference it inside an if like that, you won’t get what you think (ie. you won’t get "A" or "B"). How-to guide: Using JavaScript

Jeremy

[Author]

Posts