ivan pavlov discovered
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Human Growth and Development Final Exam Answers

1. What did Ivan Pavlov discover?

Correct answer: B

Rationale: Ivan Pavlov discovered classical conditioning. This is a form of learning in which a neutral stimulus becomes associated with a meaningful stimulus and acquires the capacity to elicit a similar response. Pavlov's famous experiment with dogs, where he conditioned them to salivate at the sound of a bell, demonstrated this principle. Choices A, C, and D are incorrect because Pavlov's work primarily focused on classical conditioning, not observational learning, ego contributions to development, or the clinical method.

2. In ecological systems theory, how does Toby's move just before entering fourth grade represent a significant change in his life?

Correct answer: D

Rationale: In ecological systems theory, the chronosystem refers to the dimension of time and how events and transitions over time can influence an individual's development. Toby's move just before entering fourth grade represents a significant change in his life that falls under the chronosystem. The microsystem involves the immediate environments and relationships that directly influence an individual, the mesosystem relates to connections between these environments, and the exosystem includes external settings that indirectly influence the individual, such as parents' workplaces. Therefore, Toby's move best exemplifies a change in the chronosystem due to the temporal influence on his development.

3. Lily weighed 8 pounds and was 21 inches long at birth. She was __________ than the average baby.

Correct answer: B

Rationale: Lily weighed 8 pounds and was 21 inches long at birth. Being both heavier and longer than average babies typically are at birth, Lily would be considered heavier and longer compared to the average baby. This makes choice B, 'heavier and longer,' the correct answer. Choices A, C, and D are incorrect because Lily was not shorter or lighter than the average baby at birth.

4. A __________ is a means of building schemes in which an infant who has stumbled onto a new experience caused by his or her own motor activity tries to repeat the event again and again.

Correct answer: B

Rationale: A circular reaction is a process where an infant repeats a specific action to explore and learn about the environment through their own motor activity. This repetition helps the infant to understand the consequences of their actions and build cognitive schemes. Sensorimotor reflex (choice A) refers to automatic responses to stimuli, not a purposeful repetition of actions to learn. Mental representation (choice C) involves internal cognitive structures to represent objects or events in the mind, which is different from the repetitive behavior described in the question. Goal-directed behavior (choice D) is purposeful and intentional, unlike the repetitive nature of circular reactions in infants' learning process.

5. When Reggie takes his baby son, Tyson, to his workplace for the first time, Reggie's assistant abruptly picks Tyson up and walks around the office. Tyson cries and reaches out for Reggie. Tyson is expressing __________.

Correct answer: B

Rationale: Tyson is experiencing stranger anxiety in this situation. Stranger anxiety is a common response in infants when they are exposed to unfamiliar people, causing distress and prompting the infant to seek comfort and familiarity, usually from their primary caregiver. This aligns with Tyson crying and reaching out for Reggie, as he is showing signs of discomfort and wariness towards the assistant, who is a stranger to him. Choice A, sadness, does not fit the scenario as Tyson's reaction is more related to fear and discomfort rather than sorrow. Choice C, separation anxiety, is not the correct answer in this context as separation anxiety pertains to distress when separated from a primary caregiver, not when encountering unfamiliar individuals. Choice D, disgust, is also not applicable as Tyson's behavior is not based on revulsion but rather on being in an unfamiliar and distressing situation.

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