Cognitive Psychology - IBP Year 1 - Lecture notes
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Experiment 1: Signal detection (decide whether a suspect is in the line-up)- Data: Yes NoSignal present Hits MissesSignal absent False alarms Correct rejection - The things that prevent us from detecting a signal is referred to as noise.- Sensitivity = the ability to distinguish a signal from noise.- Criterion= our tendency to detect a signal, regardless of whether it is really there or not.- Intern response > criterium: ‘yes’ Hits and false alarmsIntern response < criterium: ‘no’ Correct rejections and misses- Decisions whether a signal is present depend on the strength of the signal itself and on the characteristics of the person doing the detecting. Experiment 2: Mental rotation 3D (mentally rotate 3D-objects to decide whether they are similar)- When our mental representation of an object is bigger at a certain point of time, it is easier to answer questions about details of this object.- There is a strong relation between the degree of mental rotation that is necessary and the time it takes to make a judgement about an object’s similarity to another. Experiment 5: Attentional blink- During attentional blink experiments, participants usually don’t have any trouble reporting the first target. However, whether participants perceive the second target as well, depends on the time interval between the first and the second target. An explanation to this is that the working memory opens...
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