I am developing an experimental task on Inquisit, and one issue that I've noticed is that when the playing the game, the screen "blips" or there is a very brief moment in which the screen goes black between different trial types. This issue occurs even when I have set the stimuli drawn on the screen to be erase = false. For context, here is script for a set of three trials in which this occurs. Any thoughts on how to avoid this error are highly appreciated!
<trial coffeeshop_to_market_choice_chosen>
/ stimulustimes = [0=picture.background_pic,
picture.a1_grey,
picture.a2_grey,
picture.a3_grey,
picture.a4_grey,
picture.a5_grey,
picture.a12_grey,
picture.a7_grey,
picture.a8_grey,
picture.a9_grey,
picture.a10_grey,
picture.a11_grey,
picture.a6_yellow,
picture.sdtt_coffeeshop_nonsocial]
/ timeout = 200
/ branch = [
return trial.coffeeshop_to_market_choice;
]
/ inputdevice = keyboard
/ recorddata = true
</trial>
<trial coffeeshop_to_market_choice>
/ stimulustimes = [0=picture.background_pic,
picture.a1_grey,
picture.a2_grey,
picture.a3_grey,
picture.a4_grey,
picture.a5_grey,
picture.a12_grey,
picture.a7_grey,
picture.a8_grey,
picture.a9_grey,
picture.a10_grey,
picture.a11_grey,
picture.a6_black,
picture.sdtt_coffeeshop_nonsocial]
/ validresponse = ("f")
/ timeout = values.timeout
/ ontrialbegin = [
values.trialEndTimeNOW = script.elapsedtime;
values.trialDurNOW = values.trialEndTimeNOW - values.trialStartTime;
values.timeout = values.time_per_choice - values.trialDurNOW;
]
/ ontrialend = [
values.trialEndTime = script.elapsedtime;
values.trialDur = values.trialEndTime - values.trialStartTime;
if (trial.coffeeshop_to_market_choice.responsetext == "F") {
values.numKeyPresses += 1;
}
]
/ branch = [
if (values.trialDur > values.time_per_choice){
return trial.coffeeshop_to_market;
} else {
return trial.coffeeshop_to_market_choice_chosen;
}
]
/ inputdevice = keyboard
</trial>
<trial coffeeshop_to_market>
/ ontrialbegin = [if (values.move >= values.max_move) {values.day = values.day + 1};
values.action = "decorate";
values.a6_out = values.a6_out_avg - values.avg_presses + values.numKeyPresses;
values.social_influence_points = values.a6_out;
values.social_influence_meter = values.social_influence_meter + values.a6_out]
/ stimulustimes = [0=picture.background_pic,
picture.a1_grey,
picture.a2_grey,
picture.a3_grey,
picture.a4_grey,
picture.a5_grey,
picture.a12_grey,
picture.a7_grey,
picture.a8_grey,
picture.a9_grey,
picture.a10_grey,
picture.a11_grey,
picture.a6_black,
text.coffeeshop_to_market_txt]
/ validresponse = (" ")
/branch = [if(values.move < values.max_move) trial.sdtt_market]
/branch = [if(values.day >= values.max_day) trial.sdtt_end else trial.sdtt_newday]
/ inputdevice = keyboard
</trial>
Here are the settings I've been using for the pictures:
<picture a1_grey>
/ items = c("a1_grey.png")
/ position = (50%, 50%)
/size = (50%, 50%)
/ erase = false
</picture>