select attribute

Member of

/ select = selectmode(stimulus)

or

/ select = selectmode(list)

or

/ select = selectmode(integer, integer, integer, ...)

or

/ select = list

or

/ select = selectmode

or

/ select = index

Name

Type

Description

selectmode

selectmodeenum

Value	Description
constant	Constant selection of a single item.
current	Currently selected item of a stimulus or counter.
next	Next selected item of a stimulus or counter.
noReplace	Random selection without replacement.
noReplaceCorrect	Random selection without replacement if response is correct.
noReplaceError	Random selection without replacement if response is incorrect.
noReplaceNoRepeat	Random selection without replacement or repeating an item.
noReplaceNot	Random selection without replacement excluding the current item.
not	Synonym of noreplacenot.
random	Synonym of noreplace.
replace	Random selection with replacement.
replaceNoRepeat	Random selection with replacement and without repeating an item.
replaceNot	Random selection with replacement excluding the current item.
sequence	Sequential selection in the listed order.
serial	Synonym of sequence.

index

value

An expression resolving to an integer indicating index of the item to select.

stimulus

The name of a stimulus defined elsewhere in the script.

list

The name of a list defined elsewhere in the script.

integer

A set of numbers representing the indexes in the selection pool.

The default value is noreplace.

On each trial, the following stimulus selects the vice president who served with the corresponding president:

<text vicepresidents>
/ items = vicepresidentitems
/ select = current(presidents)
</text>

The following first selects Jefferson, then Adams, and then Washington:

<text presidents>
/ items = ("George Washington", "John Adams", "Thomas Jefferson")
/ select = sequence(3, 2, 1)
</text>

The following randomly selects mountain pictures and ensures that the selected item isn't the same as the currently selected valley item:

<picture moutains>
/ items = ("rainier.bmp", "baker.jpg", "sainthelens.gif")
/ select = noreplacenot(valleys)
</picture>

The following randomly selects sound files without replacement, except if an incorrect response is give on the trial:

<sound rock>
/ items = ("beatles.wav", "stones.wav", "thewho.wav")
/ select = noreplacecorrect
</sound>