blocks attribute

Member of

<expt>

Syntax

/ blocks = [blocknumber, blocknumber = blockname;blocknumber = listname; blocknumber-blocknumber = selectMode(blockname, blockname,...); blocknumber, blocknumber-blocknumber = blockname]

Parameters

Name	Type	Description
blocknumber	integer	A non-negative integer specifying the block number.
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.
listname	list	The name of a list element containing a set of blocks.
blockname	block	The name of a block defined elsewhere in the script to be run on this block.

Remarks

The integers to the left of the equal signs represent ordinal positions within the sequence of blocks. Blocks can be directly assigned to a position in the sequence using the equals sign. A block can be simultaneously assigned to multiple positions by separating the position numbers with commas (equivalent to "and") or dashes (equivalent to "through"). All block positions in the block must be assigned to a block or set of blocks.

Examples

This example runs five blocks selected from a list element called 'blockselector':

<expt example>
/ blocks=[1-5=blockselector]
</expt>

The first five blocks of the following block are practiceblock, and the last five blocks are testblock:

<expt>
/ blocks=[1-5=practiceblock; 6-10=testblock]
</expt>

The following expt randomly selects either leftblock or rightblock for each of its ten blocks. Both block types are run exactly five times.

<expt>
/ blocks=[1-10=noreplace(leftblock, rightblock]
</expt>

The following expt randomly selects either testblock or distractorblock for each of its 12 blocks. The testblock is run exactly 8 time and distractorblock is run 4 times.

<expt>
/ blocks=[1-12=noreplace(testblock, testblock, distractorblock)]
</expt>

The following expt runs bigblock on even numbered blocks and littleblock on odd numbered blocks.

<expt>
/ blocks=[1,3,5,7,9 = littleblock; 2,4,6,8,10 = bigblock]
</expt>