NEWLY UPDATED SENSATION AND PERCEPTION CH 1-3 STUDY GUIDE WITH COMPLETE SOLUTIONS

NEWLY UPDATED SENSATION AND PERCEPTION CH 1-3 STUDY GUIDE WITH COMPLETE SOLUTIONS What is a JND? Can you give a real-world example of a JND? - answer Weber's law states that a "just-noticeable difference" (JND) between two stimuli is related to the magnitude or strength of the stimuli. What does this mean? Well, in our example, it means that we might not be able to detect a 1-mm difference when we are looking at lines 466 and 467 mm in length, but we may be able to detect a 1-mm difference when we are comparing a line 2 mm long with one 3 mm long. Another example of this principle is that we can detect 1 candle when it is lit in an otherwise dark room. But when 1 candle is lit in a room in which 100 candles are already burning, we may not notice the light from this candle. The JND is greater for very loud noises than it is for much more quiet sounds. When a sound is very weak, we can tell that another sound is louder, even if it is barely louder. When a sound is very loud, to tell that another sound is even louder, it has to be much louder. Thus, Weber's law means that it is harder to distinguish between two samples when those samples are larger or stronger levels of the stimuli. What is the direct perception view? How does it differ from the information-processing view? - answer-direct perception view (Gibsonian approach), the world generates rich sources of information that the senses merely need to pick up directly.The direct perception view also emphasized ecological realism in experiments. This means that rather than showing simple displays to participants in experiments, direct perception theorists advocated using more naturalistic stimuli. Information-processing approach: the view that perceptual and cognitive systems can be viewed as the flow of information from one process to another