Exam 5: Learning

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David Stephens's model of learning and environmental stability predicts that learning will be favored when environmental predictability is:

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In this chapter, you were introduced to the relationship between parental investment and between-sex differences in learning. Under what parental investment conditions should females and males have equal ability to learn? When should females exhibit greater learning abilities than males? When should males exhibit greater learning abilities than females?

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Females and males should have equal ability to learn under conditions of equal parental investment from both parents. When both parents invest equally in the offspring, there is no differential pressure for one sex to prioritize learning over the other.

Females may exhibit greater learning abilities than males when the parental investment from the mother is significantly higher than that from the father. This can happen in species where females provide the majority of care for offspring, leading to a greater need for learning and problem-solving skills to ensure the survival of the offspring.

Conversely, males may exhibit greater learning abilities than females when the parental investment from the father is significantly higher than that from the mother. In species where males provide more care for offspring, they may have a greater need for learning and problem-solving skills to ensure the survival of their offspring.

Overall, the relationship between parental investment and between-sex differences in learning highlights the importance of understanding the evolutionary and environmental factors that shape learning abilities in different species.

Discuss the general differences between Pavlovian (classical) conditioning and operant conditioning. In terms of what we can glean about animal learning, what are some similarities and differences between these two conditioning paradigms?

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Pavlovian (classical) conditioning and operant conditioning are two different forms of associative learning that have been extensively studied in animal behavior.

Pavlovian conditioning involves the association between a neutral stimulus and a biologically significant stimulus. In the classic example, Pavlov demonstrated that dogs could learn to associate the sound of a bell (neutral stimulus) with the presentation of food (biologically significant stimulus), eventually leading to the dogs salivating at the sound of the bell alone. In Pavlovian conditioning, the organism learns to associate two stimuli that occur in close proximity to each other.

On the other hand, operant conditioning involves the association between a behavior and its consequences. In operant conditioning, the organism learns to associate its own actions with the outcomes of those actions. For example, a rat in a Skinner box might learn to press a lever in order to receive a food pellet. The reinforcement or punishment of the behavior influences the likelihood of the behavior occurring again in the future.

In terms of similarities, both forms of conditioning involve learning through association. They both demonstrate how environmental cues can influence behavior and how organisms can adapt to their environment through learning. Additionally, both forms of conditioning have been shown to be subject to extinction and generalization effects.

However, there are also differences between the two paradigms. The most notable difference is the nature of the association being learned - in Pavlovian conditioning, it is between two stimuli, while in operant conditioning, it is between a behavior and its consequences. Additionally, the timing of the association is different - in Pavlovian conditioning, the association is formed between stimuli that occur close together in time, whereas in operant conditioning, the association is formed between a behavior and its consequences, which may be delayed.

Overall, both Pavlovian and operant conditioning provide valuable insights into the mechanisms of animal learning and behavior, and they offer complementary perspectives on how organisms learn to adapt to their environment.

Phenotypic plasticity refers to the ability of an organism to adopt:

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An unconditioned stimulus is a stimulus that:

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Sensitization is the process by which:

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Which of the following statements or phrases is NOT associated with the law of effect?

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Learning is best defined as:

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What types of environments would be conducive to natural selection favoring the ability to learn? Discuss your answer in terms of David Stephens' dichotomy between withinand between-lifetime environmental stability. Also, read the paper by Dunlap & Stephens (2009) titled "Components of Change in the Evolution of Learning and Unlearned Preference" (Proceedings of the Royal Society of London Series B, vol. 276, pp. 3201-3208). Briefly describe the mathematical model that the authors present, focusing particularly on how "reliability of experience" and "predictability of the best action" are factored into the model. Next, describe the experimental evolution approach taken by the authors to test the predictions of their model. What did they find? What do their data say about the factors that influence the evolution of learning?

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Appetitive stimulus is to excitatory conditioning as ___________________ is to ___________________.

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Instrumental conditioning involves:

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Read the paper by Kotrschal and colleagues (2013), "Artificial Selection on Relative Brain Size in the Guppy Reveals Costs and Benefits of Evolving a Larger Brain" (Current Biology, 23, 1-4). Describe the artificial selection procedure and the major behavioral and morphological differences between the small-brained and large-brained guppy lines. How do these data relate to the "expensive-tissue hypothesis"? Expand upon why it is important to consider functional trade-offs when studying the evolution of learning.

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Which of the following scientists revolutionized the field of instrumental learning by developing an apparatus wherein lever pushing would deliver a reward?

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When conducting laboratory studies on animal learning, what sorts of precautions should you take to ensure that your interpretations of the role of learning in your animal system are accurate? If you were not studying learning, why should you remain cognizant of the learning abilities of your study organism?

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Why were Garcia's studies on rats in the mid-1960s important for initiating the study of learning from an evolutionary perspective?

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When psychologists construct extinction curves, they are examining:

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