Skipping one loop or another

Builder
1

Experiment flow for reference:

Flow
Flow998×225 20.8 KB

Important code component:
ConditionCode
ConditionCode1255×940 99.9 KB

What I’m trying to achieve: There is a Condition variable in the Experiment Info Dialogue box. This will be either 1 or 2 (no other possibilities). If Condition=1, the Reading_Easy loop needs to run once (the Reading_Difficult loop doesn’t run). If Condition=2, the Reading_Difficult loop runs once (the Reading_Easy loop doesn’t run).

What happens currently: Reading_Difficult loop runs once, no matter what value is entered in the Condition box. Reading_Easy loop never runs.

If I change the code to the opposite so it says:

if expInfo['Condition'] == 2:
    nRepsReading_Difficult = 1
    nRepsReading_Easy = 0
else:
    nRepsReading_Difficult = 0
    nRepsReading_Easy = 1

$nReps of Reading_Difficult loop is set to nRepsReading_Difficult
$nReps of Reading_Easy loop is set to nRepsReading_Easy

Then the opposite happens: Reading_Easy runs no matter what and Reading_Difficult doesn’t run.

Obviously something is missing here but I’m not sure what. Any help is appreciated!

2

Hi There,

What you want to do instead is end the routine and break the loop if the condition does not require that routine to occur.

In your “Reading_Task_Diff” routine, add a code component, in the “Begin Routine” tab add:

if expInfo['Condition'] == 1:
    continueRoutine = False #end the routine
    Reading_Difficult.finished = True #break the loop

In your “Reading_Easy” routine, do the same, but this time add:

if expInfo['Condition'] == 2:
    continueRoutine = False #end the routine
    Reading_Easy.finished = True #break the loop

This should skip the irrelevant routine dependant on the condition you entered in expInfo :slight_smile:

Hope this helps,
Becca

1 Like
3

Hi Becca,

I had tried something similar to that previously, and it didn’t do anything. When I tried it again, still nothing. When I run the experiment, both loops run no matter what number I enter into the condition box :confused:

I’m not sure if something funky is just going on or what because this makes sense to me and I feel like it should work…

Elisabeth

4

Hi - Please could you upload a copy of you .psyexp file so that I could take a look?

Thanks,
Becca

5

Sure, I’ve attached it here, thank you!
Exp_in_Development.psyexp (84.0 KB)

This copy has code in both places that are discussed above (just so you can see where they were).

6

Hi There,

OK I see the problem. Try changing your integer values to strings i.e.
rather than
if expInfo['Condition'] == 1:
try
if expInfo['Condition'] == '1':

Hope this works :slight_smile:
Becca

PS. for future when debugging these you can check a type by adding a code component and calling type on the variable you want to check. In this example print(type(expInfo['Condition'])) returns <class 'str'> showing this is a string rather than an int (whole number).

7

That did it, thank you!! :slight_smile:

1 Like