how easily people make friends by varying the number of minutes people talk with a stranger

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Professor Jacob wants to study how easily people make friends by varying the number of minutes people talk with a stranger. She assigns people who are extroverts to the 5 minute condition and people who are introverts to the 10 minute condition. This study can be criticized because:

the experimenter did not use random assignment.

the participants are not representative of the larger population.

this study uses correct methodology.

the experimenter has biased the participants by providing unintentional cues about correct responses.

Robert normally does well on exams but when taking the entrance exam to graduate school he “forgot” everything he knew and did poorly. Which of the following best explains his poor performance?

Performance is maximized when arousal is at an “optimal” level, neither too high or too low.

Very low levels of arousal are associated with optimal performance.

Very high levels of arousal are associated with optimal performance.

Level of arousal has no impact on performance.

Developmental psychology _____.

all of these options

uses a learning theory approach that suggests that nature is more important than nurture in development

studies age-related changes in behavior and mental processes

considers infancy the most important stage in human development

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