Once you're done with the manual and tutorials, work through the below untl you fully understand what it does and how it works. If you don't understand some specific part, look up the relevant sections of the manual and if you still can't make sense of it, ask about the specific part here. Then extend the example to cover the remaining three words (GLASS, CANS & CARDBOARD).
<block example>
/ trials = [1-12 = noreplace(
plastic_blue_green, plastic_blue_yellow, plastic_green_blue, plastic_green_yellow, plastic_yellow_blue, plastic_yellow_green,
paper_blue_green, paper_blue_yellow, paper_green_blue, paper_green_yellow, paper_yellow_blue, paper_yellow_green
)
]
</block>
<parameters>
/ leftkey = "E" // left response key
/ rightkey = "I" // right response key
/ leftbinx = 25% // x position of the left bin
/ rightbinx = 75% // x position of the right bin
/ iti = 500 // inter-trial interval
</parameters>
<values>
/ worditem = 1
/ bluekey = " "
/ greenkey = " "
/ yellowkey = " "
/ bluex = 0%
/ greenx = 0%
/ yellowx = 0%
// choice counts for PLASTIC
/ plastic_blue_count = 0
/ plastic_green_count = 0
/ plastic_yellow_count = 0
// choice counts for PAPER
/ paper_blue_count = 0
/ paper_green_count = 0
/ paper_yellow_count = 0
</values>
<expressions>
// mean RTs for PLASTIC choices
/ plastic_blue_meanRT = list.plastic_blue_RT.mean
/ plastic_green_meanRT = list.plastic_green_RT.mean
/ plastic_yellow_meanRT = list.plastic_yellow_RT.mean
// mean RTs for PAPER choices
/ paper_blue_meanRT = list.paper_blue_RT.mean
/ paper_green_meanRT = list.paper_green_RT.mean
/ paper_yellow_meanRT = list.paper_yellow_RT.mean
</expressions>
// lists to collect RTs for PLASTIC
<list plastic_blue_RT>
</list>
<list plastic_green_RT>
</list>
<list plastic_yellow_RT>
</list>
// lists to collect RTs for PAPER
<list paper_blue_RT>
</list>
<list paper_green_RT>
</list>
<list paper_yellow_RT>
</list>
// PLASTIC trials
<trial plastic_blue_green>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 1; // item number 1 is PLASTIC
values.bluekey = parameters.leftkey; // left indicates blue
values.greenkey = parameters.rightkey; // right indicates green
values.bluex = parameters.leftbinx; // set blue bin to left position
values.greenx = parameters.rightbinx; // set green bin to right position
]
/ ontrialend = [
if (trial.plastic_blue_green.responsetext == values.bluekey) { // if blue was indicated
values.plastic_blue_count += 1; // increase plastic & blue choice count by one
list.plastic_blue_RT.appenditem(trial.plastic_blue_green.latency); // add RT to the plastic & blue list
} else { // otherwise
values.plastic_green_count += 1; // increase plastic & green choice count by one
list.plastic_green_RT.appenditem(trial.plastic_blue_green.latency); // add RT to the plastic & green list
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, green_bin] // clear screen & display word; 1 second later, display bins
/ validresponse = (values.bluekey, values.greenkey) // response options are blue and green in this trial
</trial>
<trial plastic_green_blue>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 1;
values.bluekey = parameters.rightkey;
values.greenkey = parameters.leftkey;
values.bluex = parameters.rightbinx;
values.greenx = parameters.leftbinx;
]
/ ontrialend = [
if (trial.plastic_green_blue.responsetext == values.bluekey) {
values.plastic_blue_count += 1;
list.plastic_blue_RT.appenditem(trial.plastic_green_blue.latency);
} else {
values.plastic_green_count += 1;
list.plastic_green_RT.appenditem(trial.plastic_green_blue.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, green_bin]
/ validresponse = (values.bluekey, values.greenkey)
</trial>
<trial plastic_blue_yellow>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 1;
values.bluekey = parameters.leftkey;
values.yellowkey = parameters.rightkey;
values.bluex = parameters.leftbinx;
values.yellowx = parameters.rightbinx;
]
/ ontrialend = [
if (trial.plastic_blue_yellow.responsetext == values.bluekey) {
values.plastic_blue_count += 1;
list.plastic_blue_RT.appenditem(trial.plastic_blue_yellow.latency);
} else {
values.plastic_yellow_count += 1;
list.plastic_yellow_RT.appenditem(trial.plastic_blue_yellow.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, yellow_bin]
/ validresponse = (values.bluekey, values.yellowkey)
</trial>
<trial plastic_yellow_blue>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 1;
values.bluekey = parameters.rightkey;
values.yellowkey = parameters.leftkey;
values.bluex = parameters.rightbinx;
values.yellowx = parameters.leftbinx;
]
/ ontrialend = [
if (trial.plastic_yellow_blue.responsetext == values.bluekey) {
values.plastic_blue_count += 1;
list.plastic_blue_RT.appenditem(trial.plastic_yellow_blue.latency);
} else {
values.plastic_yellow_count += 1;
list.plastic_yellow_RT.appenditem(trial.plastic_yellow_blue.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, yellow_bin]
/ validresponse = (values.bluekey, values.yellowkey)
</trial>
<trial plastic_green_yellow>
/ ontrialbegin = [
values.worditem = 1;
values.greenkey = parameters.leftkey;
values.yellowkey = parameters.rightkey;
values.greenx = parameters.leftbinx;
values.yellowx = parameters.rightbinx;
]
/ ontrialend = [
if (trial.plastic_green_yellow.responsetext == values.greenkey) {
values.plastic_green_count += 1;
list.plastic_green_RT.appenditem(trial.plastic_green_yellow.latency);
} else {
values.plastic_yellow_count += 1;
list.plastic_yellow_RT.appenditem(trial.plastic_green_yellow.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=green_bin, yellow_bin]
/ validresponse = (values.greenkey, values.yellowkey)
</trial>
<trial plastic_yellow_green>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 1;
values.greenkey = parameters.rightkey;
values.yellowkey = parameters.leftkey;
values.greenx = parameters.rightbinx;
values.yellowx = parameters.leftbinx;
]
/ ontrialend = [
if (trial.plastic_yellow_green.responsetext == values.greenkey) {
values.plastic_green_count += 1;
list.plastic_green_RT.appenditem(trial.plastic_yellow_green.latency);
} else {
values.plastic_yellow_count += 1;
list.plastic_yellow_RT.appenditem(trial.plastic_yellow_green.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=green_bin, yellow_bin]
/ validresponse = (values.greenkey, values.yellowkey)
</trial>
// PAPER trials
<trial paper_blue_green>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 2;
values.bluekey = parameters.leftkey;
values.greenkey = parameters.rightkey;
values.bluex = parameters.leftbinx;
values.greenx = parameters.rightbinx;
]
/ ontrialend = [
if (trial.paper_blue_green.responsetext == values.bluekey) {
values.paper_blue_count += 1;
list.paper_blue_RT.appenditem(trial.paper_blue_green.latency);
} else {
values.paper_green_count += 1;
list.paper_green_RT.appenditem(trial.paper_blue_green.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, green_bin]
/ validresponse = (values.bluekey, values.greenkey)
</trial>
<trial paper_green_blue>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 2;
values.bluekey = parameters.rightkey;
values.greenkey = parameters.leftkey;
values.bluex = parameters.rightbinx;
values.greenx = parameters.leftbinx;
]
/ ontrialend = [
if (trial.paper_green_blue.responsetext == values.bluekey) {
values.paper_blue_count += 1;
list.paper_blue_RT.appenditem(trial.paper_green_blue.latency);
} else {
values.paper_green_count += 1;
list.paper_green_RT.appenditem(trial.paper_green_blue.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, green_bin]
/ validresponse = (values.bluekey, values.greenkey)
</trial>
<trial paper_blue_yellow>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 2;
values.bluekey = parameters.leftkey;
values.yellowkey = parameters.rightkey;
values.bluex = parameters.leftbinx;
values.yellowx = parameters.rightbinx;
]
/ ontrialend = [
if (trial.paper_blue_yellow.responsetext == values.bluekey) {
values.paper_blue_count += 1;
list.paper_blue_RT.appenditem(trial.paper_blue_yellow.latency);
} else {
values.paper_yellow_count += 1;
list.paper_yellow_RT.appenditem(trial.paper_blue_yellow.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, yellow_bin]
/ validresponse = (values.bluekey, values.yellowkey)
</trial>
<trial paper_yellow_blue>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 2;
values.bluekey = parameters.rightkey;
values.yellowkey = parameters.leftkey;
values.bluex = parameters.rightbinx;
values.yellowx = parameters.leftbinx;
]
/ ontrialend = [
if (trial.paper_yellow_blue.responsetext == values.bluekey) {
values.paper_blue_count += 1;
list.paper_blue_RT.appenditem(trial.paper_yellow_blue.latency);
} else {
values.paper_yellow_count += 1;
list.paper_yellow_RT.appenditem(trial.paper_yellow_blue.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=blue_bin, yellow_bin]
/ validresponse = (values.bluekey, values.yellowkey)
</trial>
<trial paper_green_yellow>
/ ontrialbegin = [
values.worditem = 2;
values.greenkey = parameters.leftkey;
values.yellowkey = parameters.rightkey;
values.greenx = parameters.leftbinx;
values.yellowx = parameters.rightbinx;
]
/ ontrialend = [
if (trial.paper_green_yellow.responsetext == values.greenkey) {
values.paper_green_count += 1;
list.paper_green_RT.appenditem(trial.paper_green_yellow.latency);
} else {
values.paper_yellow_count += 1;
list.paper_yellow_RT.appenditem(trial.paper_green_yellow.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=green_bin, yellow_bin]
/ validresponse = (values.greenkey, values.yellowkey)
</trial>
<trial paper_yellow_green>
/ posttrialpause = parameters.iti
/ ontrialbegin = [
values.worditem = 2;
values.greenkey = parameters.rightkey;
values.yellowkey = parameters.leftkey;
values.greenx = parameters.rightbinx;
values.yellowx = parameters.leftbinx;
]
/ ontrialend = [
if (trial.paper_yellow_green.responsetext == values.greenkey) {
values.paper_green_count += 1;
list.paper_green_RT.appenditem(trial.paper_yellow_green.latency);
} else {
values.paper_yellow_count += 1;
list.paper_yellow_RT.appenditem(trial.paper_yellow_green.latency);
}
]
/ stimulustimes = [0=clearscreen, word; 1000=green_bin, yellow_bin]
/ validresponse = (values.greenkey, values.yellowkey)
</trial>
// word stimulus at center of screen
<text word>
/ items = worditems
/ select = values.worditem
/ position = (50%, 50%)
/ fontstyle = ("Arial", 5%, true)
</text>
<item worditems>
/ 1 = "PLASTIC"
/ 2 = "PAPER"
/ 3 = "GLASS"
/ 4 = "CANS"
/ 5 = "CARDBOARD"
</item>
// BIN stimuli; you'll want to change these to picture elements
// blue bin
<shape blue_bin>
/ shape = rectangle
/ color = blue
/ size = (10%, 40%)
/ hposition = values.bluex
/ vposition = 50%
</shape>
// green bin
<shape green_bin>
/ shape = rectangle
/ color = green
/ size = (10%, 40%)
/ hposition = values.greenx
/ vposition = 50%
</shape>
// yellow bin
<shape yellow_bin>
/ shape = rectangle
/ color = yellow
/ size = (10%, 40%)
/ hposition = values.yellowx
/ vposition = 50%
</shape>
<data>
/ columns = (date time subject group session blocknum blockcode trialnum trialcode text.word.currentitem response latency
values.plastic_blue_count values.plastic_green_count values.plastic_yellow_count
expressions.plastic_blue_meanRT expressions.plastic_green_meanRT expressions.plastic_yellow_meanRT
values.paper_blue_count values.paper_green_count values.paper_yellow_count
expressions.paper_blue_meanRT expressions.paper_green_meanRT expressions.paper_yellow_meanRT
)
</data>
<summarydata>
/ columns = (script.startdate script.starttime script.subjectid script.groupid script.sessionid script.elapsedtime
values.plastic_blue_count values.plastic_green_count values.plastic_yellow_count
expressions.plastic_blue_meanRT expressions.plastic_green_meanRT expressions.plastic_yellow_meanRT
values.paper_blue_count values.paper_green_count values.paper_yellow_count
expressions.paper_blue_meanRT expressions.paper_green_meanRT expressions.paper_yellow_meanRT
)
</summarydata>