In the visual search task participants need to find a target in a scene of distractors. The target has a particular shape and colour (like a red triangle 🔺 ) that has to be spotted in among distractors that have could share some or all of its properties. The experiment is designed to show the difference between fast ‘parallel’ and slow ‘conjunctive’ visual search.
The Stroop effect is probably one of the most widely known psychological phenomena and one of the first things that psychology undergraduates encounter in their studies. Most commonly the Stroop effect describes the difficulty to name the font color of a word, if that word itself names a different color.
The Go/No-go task is a simple experimental paradigm that requires participants to respond by pressing a button when they see a go-signal, and not respond when they see the no-go signal.