Question 1

Which of the following best describes the 'bystander effect' as demonstrated in the Kitty Genovese case?

Accepted Answer

People feel less responsibility to take action because they assume others will.

Question 2

According to the bystander effect, which scenario is MOST likely to result in someone helping a person in distress?

Accepted Answer

A nearly empty park with only one other person present.

Question 3

Which psychological concept explains why individuals in large groups may act in ways they normally would not?

Accepted Answer

Deindividuation

Question 4

Deindividuation is most likely to occur in which of the following settings?

Accepted Answer

A large, anonymous crowd at a sporting event

Question 5

Which of the following is an example of a negative behavior that can result from deindividuation?

Accepted Answer

Vandalism during a protest

Question 6

A person witnesses a car accident on a busy highway during rush hour. According to the bystander effect, what is the most likely outcome?

Accepted Answer

The person will assume someone else will help and may not take action.

Question 7

Which formula best represents the relationship between the number of bystanders ($$n) $$and the likelihood ($$L) $$that any one individual will help, according to the bystander effect?

Accepted Answer

$$L = \frac{1}{n}$$

Question 8

Which of the following is NOT a factor that contributes to the bystander effect?

Accepted Answer

Expertise of the bystander

Question 9

Which scenario best illustrates deindividuation leading to prosocial behavior?

Accepted Answer

A crowd at a concert helping someone who fainted.

Question 10

If a group of 10 people witnesses an emergency, and the probability that any one person will help is $$0.1$$, what is the probability that at least one person will help? Use the formula $$P = 1 - (1 - p)^n$$, where $$p is $$the probability that one person helps and $$n is $$the number of people.

Accepted Answer

$$P = 1 - (1 - 0.1$$)^{10}$$ = 0.651$$

Question 11

Which of the following best explains why people in crowds may engage in behaviors they would not do alone?

Accepted Answer

They experience a loss of self-awareness and accountability.

Question 12

Which of the following is a common misconception about the bystander effect?

Accepted Answer

People are more likely to help in a large group.

Question 13

A student is in a crowded cafeteria and drops their tray. According to the bystander effect, what is the most likely response from others?

Accepted Answer

Most people will ignore the situation, assuming someone else will help.

Question 14

Which of the following is an example of antisocial behavior resulting from deindividuation?

Accepted Answer

Looting during a riot.

Question 15

Which concept is most closely related to the loss of self-awareness in large groups?

Accepted Answer

Deindividuation

Question 16

If the likelihood that any one person will help in an emergency is $$p = 0.2$$, and there are $$n = 5$$ bystanders, what is the probability that no one helps? Use the formula $$P = (1 - p)^n.$$

Accepted Answer

$$P = (1 - 0.2)^5$ = 0.32768$$

Question 17

Which of the following best illustrates diffusion of responsibility?

Accepted Answer

A person assumes someone else will help in a group.

Question 18

Which of the following is LEAST likely to be influenced by deindividuation?

Accepted Answer

A person acting alone in a quiet room.

Question 19

Which of the following statements about the bystander effect is TRUE?

Accepted Answer

The more people present, the less likely any one person will help.

Question 20

Which of the following is a real-world example of deindividuation leading to antisocial behavior?

Accepted Answer

A crowd looting stores during a blackout.

Group Behavior in Social Psychology: The Bystander Effect and Deindividuation

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