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Benutzer:Meriko/dotprobe

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The dot-probe paradigm is test used by cognitive psychologists in order to assess selective attention. In many cases, the dot-probe paradigm is used to assess selective attention to threatening stimuli in individuals diagnosed with anxiety disorders. Participants are situated in front of a computer screen and their chins are securely placed on a chin rest. Participants are asked to stare at a fixation cross on the center of the screen. Two stimuli, one of which is neutral and one of which is threatening, apprear randomly on either side of the screen. The stimuli are presented for a duration of 500ms before a dot is presented in the location where one of the stimuli was presented, at which point participants are instructed to respond on a remote key pad which side of the screen the dot appeared. Latency is measured automatically by the computer. The fixation cross appears again for several seconds and then the cycle is repeated. Quicker reaction time to the dot when it occurs in the previous location of a threatening stimuli is often interpreted as vigilance to threat

Das Dot-Probe-Paradigma wird von kognitiv .... Psychologen genutzt um selektive Aufmerksamkeit zu messen.

Den Personen wird in der Mitte des Computerbildschirms ein Fixationskreuz präsentiert, auf das die Personen ihre Aufmerksamkeit richten sollen. Anschließend verschwindet das Kreuz und zwei Stimulis werden präsentiert, von denen einer neutral und der andere bspw. bedrohlich ist. Nach 500ms verschwinden die Stimulis, und ein Punkt erscheint an einer der Stellen an denen vorher die Stimulis plaziert waren (..oh Gott..). Aufgabe der Personen ist es, mit einer von zweien Antworttasten auf die Stelle des Punktes zu reagieren... Gemessen wird die Reaktionszeit der Person. Kürzere Reaktionszeiten bestimmte Dot-Stimulus-Kombinationen werden als Vigilanz bezüglich der Stimulis interpretiert.

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