Welcome to your Chapter 2 - Self Study Quiz
1. According to Marr, which of the following are involved in giving a computational-level analysis of an information-processing system?
2. Which of the following features of language is missing from Winograd's SHRDLU?
3. Why did some cognitive scientists interpret Shepard & Metzler’s results as evidence of non-digital information-processing?
4. What prediction would someone make about Shepard and Metzler’s shape rotation experiment if they thought that all information processing in the brain was digital?
5. Which of the following are examples of cognitive systems that can be understood hierarchically?
6. Tanya, a cognitive scientist, studies how memory works. Suppose she tells you that memory works to store and retrieve information. Which level of analyzing a cognitive system is she using to describe memory? (in Marr’s terms.)
7. Marr concluded from Elizabeth Warrington’s studies that the main job of the visual system is to “derive a representation of a shape.” What level of analysis is Marr using to describe the visual system here?
8. Suppose you want to explain to your friend how olfaction (the sense of smell) works and you say “Olfaction takes information from sensory systems about odors and transforms it into a representation of discrete smells. But I’m not sure how the odors are transformed into discrete smells or what representations are involved in the process.” What level of explanation do you need to answer these latter questions, according to Marr?
9. Marr described three different stages of information processing in the visual system. Which stage(s) did he think must be explained by his three levels for analyzing cognitive systems in order to provide a complete account of vision?
10. What type of analysis is illustrated by Marr’s three levels of explanation?
11. SHRDLU’s microworld is much more complex than the world of most human beings.
12. The visual system is the only cognitive system that can be broken down into three levels (as Marr did with vision).
