How to test for dual-task-specific effects in brain imaging studies - An evaluation of potential analysis methods

► The analysis of dual-task brain-imaging studies requires careful consideration. ► To test for dual-task specific activation, only some contrasts are valid. ► Valid contrasts are DT - sum of STs, interaction contrast, conjunction analysis. ► Invalid contrasts are DT - Baseline, DT - one ST, DT - mean of STs. ► The same applies to research on divided attention and multisensory integration.