Complex sentence: Another very common conflict-inducing stimulus is the Stroop task (Pardo et al., 1990), which involves naming the color ink of words that are either congruent (RED written in red) or incongruent (RED written in blue).
Split into simpler sentences: Another very common conflict-inducing stimulus is the Stroop task (Pardo et al., 1990). The classic "Stroop task" involves naming the color ink of words that are either congruent (RED written in red) or incongruent (RED written in blue).