The Semantic Stratosphere

Chapter 7 concentrates on abstract words like democracy, luxury, and chance. These words are harder to characterize and investigate than concrete ones like bird, mug, and banana, but the pace of progress in understanding their cognitive and neural bases has dramatically increased in recent years. For instance, it’s now clear that compared to concrete words, abstract ones rely more on verbal associations, occur in a broader range of contexts, and are rated higher for certain types of semantic features (e.g., time, social interaction, emotion, and drive). Consistent with these differences, it’s well-established that abstract words rely more than concrete ones on a few very high-level cortical areas that play vital roles in language processing while also contributing to the GSN/DMN. And yet there’s also mounting evidence that, like concrete words, many abstract ones are anchored to some extent in systems for perception and action. In addition, an increasing amount of research has been exploring how different categories of abstract words (e.g., those for numbers, emotions, mental states, and moral judgments) are associated with different sets of partly shared and partly segregated brain regions.