Set Operations

In many occasions, you need random stimulus material you draw content from a set of possible items or screen locations. In the ERTS Script Language this can be achieved by drawing random elements from a Set with or without replacement. The members of a set can be stimulus items, screen positions, keys, etc. (see SET data type).

The lifetime of set operations is for an entire session. This means that you can have some random assignments of content at the beginning of a session and then use this random content throughout the experiment.