Piliavin et al. (1969) - Bystander Behaviour

Explain how Piliavin et al. (1969) investigated 'Responses to people in need'. (10 marks)",
"marks": 10,
"solution": "Introduction: Piliavin et al. conducted a field experiment on the NY Subway to investigate factors influencing bystander intervention in a naturalistic setting.

Paragraph 1 - Method and IVs: The study took place on a 7.5-minute journey. On each trial, a male confederate collapsed. The key independent variable investigated was the type of victim: either appearing ill (carrying a cane) or drunk (smelling of alcohol). Other IVs included the victim's race (Black/White) and the presence of a helping model. This directly tested how the perceived responsibility of the person in need affects helping.

Paragraph 2 - DVs and Data Collection: Two female observers covertly recorded key dependent variables, including the speed and frequency of help, and the sex and race of the helpers. They noted that help was offered spontaneously in 95% of cane trials versus only 50% of drunk trials, showing that the perceived cause of need was a major factor.

Paragraph 3 - Key Finding & Conclusion: Crucially, Piliavin found no evidence of diffusion of responsibility; helping was not less likely in crowded carriages. They concluded that in a situation where bystanders cannot easily leave (the enclosed carriage), they are more likely to help, and their decision is based on a cost-reward analysis, as modelled by their Arousal: Cost-Reward theory. The cost of helping a drunk victim was perceived as higher, hence the lower helping rate.",
"examiner_commentary": "This is a top-level answer. It is concise, accurate, and packed with the specific terminology and statistics that examiners look for. It clearly outlines the method (AO1), links it to the key findings (AO1), and uses the Arousal: Cost-Reward model to explain the results (AO2). It avoids the common pitfall of stating that diffusion of responsibility was supported."

Evaluate the study by Piliavin et al. (1969) in terms of its ecological validity. (8 marks)",
"marks": 8,
"solution": "Point 1 - High Ecological Validity: Piliavin et al.'s study has very high ecological validity. This is because it was a field experiment conducted in a real-life environment—a moving New York City subway train. Participants were genuine passengers who were unaware they were being observed, meaning their behaviour was natural and spontaneous, free from demand characteristics. The emergency itself was also realistic. This means the findings on helping behaviour are likely to be generalisable to how people would actually behave in a similar real-world situation.

Point 2 - Counter-argument / Limitation: However, while the setting was natural, some elements were still controlled, which could be seen as reducing the pure naturalism. The collapse was staged by a confederate at a specific time (70 seconds into the journey) and the victim always behaved in a standardised way. This level of control is a feature of an experiment, and it means the situation, while realistic, was not a wholly naturally occurring emergency. Furthermore, the presence of two observers staring at the victim and recording data might have seemed unusual to some passengers, potentially influencing their behaviour in a subtle way.

Conclusion: Overall, despite the controlled elements, the study possesses significantly higher ecological validity than any laboratory-based experiment on the same topic. The benefits of observing genuine, spontaneous reactions in a real-world context are a key strength of the study, even if it comes at the cost of some experimental control and raises ethical issues.",
"examiner_commentary": "A well-balanced evaluation. The candidate correctly identifies high ecological validity as a key strength and explains why (natural setting, unaware participants). The counter-argument is also strong, acknowledging the controlled, experimental elements that slightly limit the naturalism. The concluding sentence provides a clear judgement, which is essential for top marks in evaluation questions."

To what extent does the Social Area, as illustrated by the study by Piliavin et al. (1969), explain responses to people in need? (15 marks)",
"marks": 15,
"solution": "Introduction: The Social Area proposes that our behaviour is primarily influenced by the situation we are in and the people around us. Piliavin et al.'s study provides strong support for this view in explaining responses to people in need, suggesting situational factors can override dispositional ones. However, the area may not provide a complete explanation.

Argument for the Social Area (Situational Factors): Piliavin's findings powerfully demonstrate the influence of the situation. The key determinant of helping was the victim's condition (cane vs. drunk), a situational variable. The Arousal: Cost-Reward model is itself a situational theory, arguing that bystanders make a rational calculation based on the costs and rewards present in that specific emergency. The enclosed subway carriage, a key situational feature, prevented bystanders from simply leaving, forcing them to confront the emergency and their own arousal. This led to high helping rates, directly contradicting the dispositional view that helping is simply down to having an 'altruistic personality'.

Argument Against the Social Area (Individual Factors): However, the social area cannot explain everything. While 90% of first helpers were male, this is a dispositional (gender) difference that the study records but does not fully explain through its situational model. Furthermore, while helping rates were high, not everyone helped. Individual differences in personality, past experiences, or levels of empathy could explain why some passengers helped immediately while others did not. The slight same-race helping bias also suggests that individual social identity can play a role, which is a factor that resides within the individual as much as the situation.

Alternative Explanations (e.g., Cognitive): The Arousal: Cost-Reward model itself has a strong cognitive component. It assumes a rational, cognitive process of weighing costs and benefits. This suggests that a purely social explanation is insufficient, and that cognitive processes are integral to understanding the bystander's decision-making process.

Conclusion: In conclusion, the Social Area, as exemplified by Piliavin, provides a very strong explanation for responses to people in need. The study convincingly shows that situational variables like victim type and the physical environment are powerful determinants of behaviour. However, it does not provide a complete picture. The fact that there were still individual differences in who helped, and how quickly, suggests that dispositional factors also play a role. Therefore, a holistic explanation would require an interactionist approach, combining both social and individual factors.",
"examiner_commentary": "This is an excellent 15-mark essay. It directly addresses the question, using Piliavin as the core example. It presents a clear argument for the social area, but also develops a counter-argument considering individual differences. The inclusion of an alternative perspective (cognitive) shows sophisticated thinking. The conclusion is well-developed and offers a nuanced, interactionist judgement. This would achieve the top level of the mark scheme."