PSY270H1 Lecture Notes - Lecture 8: Semantic Dementia, Prototype Theory, Encephalitis
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In sentence verificatoin, subjects are presented with statements and are asked to answer. In an experiment done by rosch, subjects were asked to name features common to the objects found in different categories of differing levels: rosch"s subjects listed an average of 3 common features for the global level category. Experts (left pair of bars) used more specific categories to name birds, whereas nonexperts (right pair of bars) used more basic categories: representing relationships between categories: semantic networks. In this section, our main concern is to explain an approach to categories that focuses on how categories or concepts are organized in the mind: the semantic network approach , proposes that concepts are arranged in networks. In addition, rips et al. (1973) obtained sentence verification results such as the following: Input units are units activated by incoming, external stimuli. Bars represent activity in the eight representation units. Notice how the pattern of activation changes as learning progresses.
