The bystander effect fundamentals

• A. The tendency for people to help more when they are alone than when others are present
• B. The tendency for individuals to be less likely to offer help in an emergency when other people are present ✓
• C. The tendency for groups to take greater risks than individuals acting alone
• D. The tendency for people to conform to the opinions of a majority

Why: The bystander effect describes how the presence of other people can reduce the likelihood that any single individual will intervene in an emergency, because responsibility is diffused across the group.

• A. The Stanford Prison Experiment
• B. The 1964 murder of Kitty Genovese in New York City ✓
• C. The Milgram obedience experiments
• D. The Hawthorne studies at Western Electric

Why: The 1964 murder of Kitty Genovese was widely reported (though the initial reporting was later found to be exaggerated) as a case where many neighbors allegedly witnessed the attack without calling for help, prompting research by Darley and Latané.

• A. Splitting a task into smaller parts so each person does less work
• B. The feeling that someone else will take responsibility, so each person feels less personally obligated to act ✓
• C. Sharing financial costs equally among group members
• D. Transferring blame from one person to another after a mistake

Why: Diffusion of responsibility is the key mechanism behind the bystander effect: when many people are present, each person assumes someone else will act, so individual responsibility feels reduced.

• A. Being in a large crowd of strangers
• B. Being the only person who notices the emergency ✓
• C. Believing others are unaware of the situation
• D. Assuming someone else is more qualified to help

Why: When a person is the only one who notices an emergency, there is no one to share responsibility with, so they are much more likely to take action. Large crowds, unnoticed situations, and assumptions about others' competence tend to suppress helping.

• A. Helping increased steadily with group size
• B. Helping stayed the same regardless of group size
• C. Helping decreased as the number of other bystanders increased ✓
• D. Helping was highest when group size was exactly three

Why: In their studies, such as those involving a staged seizure and smoke-filled room experiments, participants were consistently less likely to help or report an emergency when they believed other bystanders were present.

• A. Brooklyn
• B. Queens ✓
• C. The Bronx
• D. Manhattan

Why: Kitty Genovese was attacked in Kew Gardens, a neighborhood in Queens, in March 1964. The location is part of the widely cited story that shaped early bystander research.

• A. Five
• B. Ten
• C. Thirty-eight ✓
• D. One hundred

Why: A 1964 New York Times article reported that 38 witnesses saw or heard the attack and did not call for help. This figure became central to the bystander narrative, though later investigations questioned its accuracy.

• A. Stanley Milgram and Philip Zimbardo
• B. Bibb Latané and John Darley ✓
• C. Leon Festinger and Albert Bandura
• D. Solomon Asch and Gordon Allport

Why: Bibb Latané and John Darley conducted landmark experiments in the late 1960s showing that individuals were less likely to help when other people were present. Their work established the bystander effect as a research topic.

• A. Bystanders feel that the victim is partly to blame for the situation
• B. Each person assumes someone else will take action, so no one does ✓
• C. Bystanders become more aggressive when they witness violence
• D. People spread rumors about an event to avoid personal involvement

Why: Diffusion of responsibility means that when many people are present, each individual feels less personal obligation to act because they assume others will. This is one of the key explanations for the bystander effect.

• A. Completely accurate in every detail
• B. Exaggerated, with the number of witnesses and their inaction overstated ✓
• C. Fabricated entirely by the police
• D. Underreported because the case was ignored by the media

Why: Subsequent reporting and analysis, including work by Rosenthal and others, found that the number of witnesses was likely overstated and that some neighbors did try to help or call the police. This complicates the simple story but did not eliminate the research interest it inspired.

• A. The tendency for people to help more when they are alone than when others are present
• B. The tendency for individuals to be less likely to offer help in an emergency when other people are present ✓
• C. The tendency for people to panic and flee when witnessing an emergency
• D. The tendency for groups to make more extreme decisions than individuals

Why: The bystander effect describes how the presence of other people reduces the likelihood that any single individual will intervene in an emergency.

• A. Spreading legal liability evenly among group members after an accident
• B. Feeling that responsibility for acting is shared among many witnesses, so each person feels less personally obligated to act ✓
• C. Transferring blame from an individual to an organization
• D. Dividing tasks equally among team members to reduce workload

Why: Diffusion of responsibility occurs when the presence of others leads each person to assume someone else will take action, weakening their own sense of obligation.

• A. The Kitty Genovese case in New York City ✓
• B. The Stanford Prison Experiment
• C. The Columbine High School shooting
• D. The Milgram obedience experiments

Why: The murder of Kitty Genovese, widely reported (though with some inaccuracies) as having been witnessed by many neighbors who did not call for help, prompted psychologists Darley and Latané to study bystander behavior.

• A. Participants alone responded more slowly than those in groups
• B. Participants alone were far more likely to report the emergency than those in groups ✓
• C. Participants in groups were more likely to report the emergency than those alone
• D. There was no difference in response rates between the two conditions

Why: In their smoke-filled room studies, people working alone reported the smoke quickly, while those in groups often waited, looking to others for cues, and frequently did not report it at all.

• A. Being in a large crowd of strangers
• B. Ambiguity about whether an emergency is occurring
• C. Being directly asked for help by a specific person ✓
• D. Assuming someone else is more qualified to help

Why: When a specific individual is directly asked for help, responsibility is no longer diffused across the group, making it much more likely that person will act.

• A. Individuals deliberately ignoring an emergency to avoid getting involved
• B. Each person in a group assumes nothing is wrong because others appear calm and unconcerned ✓
• C. A belief that only trained professionals should intervene in emergencies
• D. The tendency to help strangers more than friends during a crisis

Why: Pluralistic ignorance occurs when individuals look to the reactions of others to interpret an ambiguous situation. If everyone appears unconcerned, each person concludes that no emergency exists, even though others may be privately just as uncertain.

• A. The Milgram obedience experiments
• B. The Stanford prison experiment
• C. The Darley and Latané smoke-filled room experiments ✓
• D. The Asch conformity line experiments

Why: Darley and Latané (1968) placed participants in a room that began filling with smoke. Participants alone reported the smoke far more often than those in groups, showing that the presence of others reduced individual intervention.

• A. Dividing tasks evenly so each person does less work
• B. Feeling that responsibility for acting is shared, so each individual feels less personally obligated ✓
• C. Passing blame to a supervisor after a failure
• D. Losing motivation when a task is too difficult

Why: Diffusion of responsibility means that when many people witness a problem, each one assumes someone else will act. This lowers the felt personal obligation to help, which is a key mechanism behind the bystander effect.

• A. Being in a large crowd of unfamiliar people
• B. Being the only person who notices the emergency ✓
• C. Having a strong belief that the victim deserves help
• D. Being in a hurry to reach a destination

Why: When an individual is the only witness, responsibility rests entirely on them, so they are much more likely to act. Increasing the number of bystanders consistently decreases the probability that any one of them will intervene.

• A. Waiting until someone else takes charge
• B. Assuming the situation is not serious because no one else is reacting
• C. Pointing at a specific person and asking them directly to call for help ✓
• D. Quietly leaving the area to avoid involvement

Why: Assigning a specific task to a specific person removes the diffusion of responsibility, since the person now knows they are the one expected to act. Interventions like this are commonly recommended in bystander intervention training.

• A. A bystander's fear of physical harm when intervening in an emergency
• B. Concern about being judged negatively by others for how one acts in a situation ✓
• C. Reluctance to help because the victim is a stranger
• D. Confusion about whether an event is actually an emergency

Why: Evaluation apprehension is the worry that others will judge our actions, which can lead bystanders to hold back from helping for fear of looking foolish or overreacting.

• A. Milgram's obedience experiments in the 1960s
• B. Darley and Latané's 1968 experiments on smoke-filled rooms and emergency response ✓
• C. Festinger's cognitive dissonance studies on dollar-and-a-half tasks
• D. Zimbardo's Stanford Prison Experiment

Why: Darley and Latané's 1968 smoke-filled room experiments showed that participants were less likely to report smoke when they were with passive others, illustrating audience inhibition and diffusion of responsibility.

• A. Audience inhibition is about fear of judgment, while diffusion of responsibility is about sharing the sense of obligation among many people ✓
• B. Audience inhibition applies only to emergencies, while diffusion of responsibility applies to everyday tasks
• C. Audience inhibition is a physical limitation, while diffusion of responsibility is a legal concept
• D. They are identical terms describing the same psychological process

Why: Audience inhibition stems from worrying about how others will evaluate us, whereas diffusion of responsibility stems from assuming someone else will take action because the responsibility is shared.

• A. Evaluation apprehension combined with pluralistic ignorance ✓
• B. Pure physical incapacity to help
• C. Lack of empathy for strangers
• D. Preference for watching rather than acting

Why: Pluralistic ignorance (everyone looking calm, so the situation seems non-urgent) combined with fear of judgment for overreacting makes the bystander hold back.

• A. Waiting until someone else acts first to avoid standing out
• B. Directly assigning a specific task to a specific person, such as 'You, call 911' ✓
• C. Assuming the situation is harmless if no one reacts
• D. Leaving the scene so no one can judge your behavior

Why: Singling out a specific person reduces diffuse responsibility and gives the individual a clear, socially acceptable reason to act, which lowers the fear of standing out.

• A. Participants in groups reported the smoke faster than those alone
• B. Participants alone reported the smoke much more quickly than those in groups ✓
• C. Participants in groups were more likely to leave the room immediately
• D. There was no significant difference in reporting speed between conditions

Why: Participants tested alone reported the smoke far more quickly and consistently than those in groups, where many people waited while looking to others for cues about how to respond.

• A. Bystanders deliberately ignore emergencies to avoid personal risk
• B. Each person looks to others' calm reactions and wrongly concludes that no emergency exists ✓
• C. Bystanders assume someone more qualified will certainly act
• D. Bystanders feel guilty about their inaction and therefore avoid helping later

Why: Pluralistic ignorance occurs when individuals interpret the lack of visible concern in others as evidence that the situation is not serious, even though everyone may be privately uncertain.

• A. The presence of many other bystanders who appear unconcerned
• B. Being in a large crowd where responsibility feels diffused
• C. The bystander being the only person who witnessed the event ✓
• D. Ambiguity about whether the situation is actually an emergency

Why: When a bystander is the only witness, personal responsibility is high and not diffused. Crowds, unconcerned observers, and ambiguous situations all tend to reduce helping.

• A. The tendency for people to share the cost of helping equally
• B. The feeling that responsibility to act is spread across all those present, so each individual feels less obligated ✓
• C. The process by which emergency responsibilities are formally delegated to authorities
• D. The loss of personal identity that occurs when people act as part of a crowd

Why: Diffusion of responsibility means that when many people witness an emergency, each person feels that someone else should take action, lowering the felt obligation to help individually.

• A. Telling no one specifically to act and letting the group decide
• B. Having people single out one individual and directly ask them for help ✓
• C. Encouraging everyone to wait and observe before responding
• D. Making the emergency seem less serious so people feel calmer

Why: Directly assigning a specific person to help removes the diffusion of responsibility, making the individual feel personally accountable. Vague appeals to the group tend to be ignored.

• A. The tendency for people to help more when others are present
• B. The tendency for people to be less likely to help in an emergency when other people are present ✓
• C. The tendency for people to take action only when they are directly asked to
• D. The tendency for groups to make more extreme decisions than individuals

Why: The bystander effect describes how the presence of other people can reduce an individual's likelihood of offering help, because responsibility feels diffused across the group.

• A. Knowing the victim personally
• B. Assuming someone else will take action ✓
• C. Having first aid training
• D. Being physically close to the emergency

Why: Diffusion of responsibility occurs when each person assumes that someone else is more qualified or will act, so no one acts.

• A. Wait until others have clearly acted before you respond
• B. Point to a specific person and give them a clear task, such as calling emergency services ✓
• C. Post about the situation online and hope someone sees it
• D. Assume the situation is under control since others are watching

Why: Directly assigning a specific task to a specific person breaks diffusion of responsibility and makes it clear who is accountable for acting.

• A. People deliberately ignoring a situation they dislike
• B. People looking to others for cues and concluding nothing is wrong because no one else is reacting ✓
• C. Bystanders being unable to speak the language of the victim
• D. Bystanders believing the victim deserves what happened to them

Why: Pluralistic ignorance happens when individuals interpret the calm of others as evidence that the situation is not an emergency, even though everyone may be privately concerned.

• A. Recording the incident on your phone without intervening
• B. Assuming a coworker being harassed will report it themselves
• C. Stepping in to interrupt the harassment, or checking on the person afterward and reporting if needed ✓
• D. Leaving quickly so you are not involved

Why: Effective bystander intervention involves safely taking some action, whether directly interrupting, supporting the target, or reporting, rather than assuming others will handle it or staying passive.