CH14_Exam_Cognitive_Functions - CH14 Cognitive Functions...

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CH14 Cognitive Functions PSB2000-02 Spring 2008 Study Guide for CH14: Cognitive Functions Stop & Check Module 14.1: 4, 5, 6, 7*, 8 4. In humans, light from the right visual field shines on the left half of each retina, which sends its axons to the left hemisphere of the brain. 5. Can a split-brain person name an object after feeling it with the left hand? With the right hand? Explain. A split-brain person cannot describe something after feeling it with the left hand but can with the right. The right hand sends its information to the left hemisphere, which is dominant for language in most people. The left hand sends its information to the right hemisphere, which cannot speak. 6. After a split-brain person sees something in the left visual field, how can he or she describe or identify the object? After seeing something in the left visual field, a split-brain person could point to the correct answer with the left hand. 7. Which hemisphere is dominant for each of the following in most people: speech, emotional inflection of speech, interpreting other people’s emotional expressions, spatial relationships, perceiving overall patterns? The left hemisphere is dominant for speech; the right hemisphere is dominant for all the other items listed. 8. A child born without a corpus callosum can name something felt with the left hand, but an adult who suffered damage to the corpus callosum cannot. What are two likely explanations? In children born without a corpus callosum, the left hemisphere develops more than the usual connections with the left hand, and the anterior commissure and other commissures grow larger than usual. Module 14.2: 2*, 3, 4*, 6, 7*, 9* 2. What are three likely explanations for why the bonobos made more language progress than common chimpanzees? Bonobos may be more predisposed to language than common chimpanzees. The bonobos started training at an earlier age. They learned by imitation instead of formal training techniques. 3. What evidence argues against the hypothesis that language evolution depended simply on the overall evolution of brain and intelligence? Some people have normal brain size but very poor language. Also, some people are Page 1 of 11
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CH14 Cognitive Functions mentally retarted but nevertheless develop nearly normal language. 4. Describe tasks that people with Williams syndrome do poorly and those that they do well. Poor: self-care skills, attention, planning, problem solving, numbers, visual-motor skills, and spatial perception. Relatively good: language, interpretation of facial expressions, social behaviors, some aspects of music. 7. This is really #6. What is the strongest evidence in favor of a critical period for language learning? Deaf children who are not exposed to sign language until later in life (and who did not
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CH14_Exam_Cognitive_Functions - CH14 Cognitive Functions...

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