A task in which multiple (typically two) stimuli are presented simultaneously and the subject must select the stimulus that matches the currently relevant rule. The rule represents the relevant task "dimension". The stimulus-response mappings within this dimension alternate or "shift" among multiple (typically two) alternatives.
Definition contributed by ALenartowicz about two years ago.
Fork this term (experimental) Forking tasks is the process of separating the senses, or variations, in the meaning of a task. This process should be used sparingly, and the ability to fork a term is the sole provenance of the curator.