The frequency with which a counter new items are selected.
This property indicates whether a new item is selected each trial, block, or experiment.
The following displays the value of selectionrate in a text stimulus:
<text sometext>
/ items= ("selectionrate = <% counter.randomcounter.selectionrate %>")
</text>
The following displays the value of selectionrate in an instruction page:
<page somepage>
selectionrate = <% counter.sequencecounter.selectionrate %>
</page>