PSYCH 450 Lecture 28: Questions for the readings for classes on April 10 and 12
Reading Questions: April 10 and April 12
MonkCounting
1. What cognitive ability was demonstrated in this study with monkeys? Ratio-dependent,
analog magnitude system of representation when comparing and summing across modalities
(visual and auditory)
2. How did they demonstrate that monkeys could use this ability across different senses?
Experiment 1: They heard tones and needed to match the tones to the correct number of
visual queues (squares)
Experiment 2: Monkeys performed explicit addition by summing over two different
numerical representations (audio +visual)
3. Could monkeys add together information from different senses? They could
4. Did monkeys react faster and perform better when the stimuli was visual or when they were
sound? Percent of orret asers did’t hage ith respet to isual or auditory stiuli.
Reaction time was faster with auditory stimuli.
5. How many monkeys were tested in this study? 2 rhesus macaques
Chimp Culture
1. What aspects of chimpanzee culture were reviewed in this paper? 39 different behavior
patterns including tool use, grooming, and courtship patterns.
2. How many different locations in Africa were compared? 6 different locations were
compared.
3. At how many sites did the chimps use stone tools as a hammer and anvil? At 2 of the
locations
Chimp Display Shrine
1. What unique chimpanzee behavior was observed in this particular forest? Chimps were
throwing rocks at trees, making markings.
2. What do you think motivated the chimpanzees to engage in this behavior? I like the
explanation given that the chimp was potentially making markings and using it like signposts
3. Do you remember what behavior the male chimpanzee, Mike, used to become the dominant
alpha male in the chimpanzee community at Gombe? Mike ade loud oises ut I do’t
believe that that is what this chimp was doing.
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