Analyzing and Extending Ideas Flashcards

A city's government implements a new policy to provide subsidies for homeowners to install rooftop solar panels. The stated goal is to increase the adoption of renewable energy. An economist argues, 'This policy will be most effective in neighborhoods where residents frequently discuss home improvements and where there is high visibility of existing solar installations.' Which of the following principles, if true, would most strengthen the economist's argument?

Answer: The adoption of new products is often driven by social proof and peer effects, where individuals are influenced by the observable actions of others.

The economist's argument hinges on the idea that seeing others adopt solar panels and discussing them will spur more adoption. This is a direct application of the principle of social proof and peer effects. The policy's effectiveness, in this view, depends less on the subsidy itself and more on the social environment where it is deployed.

Passage: The 'tragedy of the commons' is an economic problem where individuals have an incentive to consume a resource at the expense of every other individual—with no way to exclude anyone from consuming—which results in the overconsumption and eventual depletion of the common resource. For example, if a pasture is open to all local herders, each herder has an incentive to graze as many of their own cattle as possible, even if it degrades the pasture for everyone, because the individual benefit of an extra cow outweighs the shared cost of slight degradation. Which of the following scenarios best illustrates an extension of the 'tragedy of the commons' principle?

Answer: International fishing fleets overfish in unregulated ocean areas, leading to the collapse of fish stocks that no single nation owns.

The key elements of the 'tragedy of the commons' are a shared, unregulated resource and individual actors behaving in their own self-interest, leading to the resource's depletion. The overfishing scenario perfectly mirrors this: the ocean is the common resource, each fleet acts in its own interest to maximize its catch, and the collective result is the depletion of the fish stocks for everyone.

Argument: 'Our company's new mandatory wellness program, which includes weekly yoga sessions and nutrition seminars, is clearly a success. In the six months since it was implemented, employee sick days have decreased by 15%.' The reasoning in this argument is most vulnerable to criticism on the grounds that it:

Answer: Overlooks the possibility that other factors may have contributed to the decrease in sick days.

The argument commits a correlation/causation fallacy. It observes two concurrent events (the wellness program and a drop in sick days) and concludes that the first caused the second. However, it fails to consider other potential causes, such as a milder flu season, a change in company sick leave policy, or a period of lower workplace stress, which could also explain the decrease in sick days.

Passage: In ecology, the 'intermediate disturbance hypothesis' suggests that biodiversity is highest when ecological disturbances (like fires or storms) are neither too rare nor too frequent. If disturbances are too rare, a few dominant species will outcompete all others. If disturbances are too frequent, only a few species that are able to grow and reproduce quickly can survive. Moderate levels of disturbance, however, prevent competitive exclusion and create a mosaic of habitats, allowing a greater variety of species to coexist. Based on this hypothesis, what would be the most likely outcome of a policy that successfully prevents all forest fires in a national park that historically experienced fires every 50-100 years?

Answer: The total number of plant species would decrease over time as a few fire-intolerant, dominant species take over.

According to the hypothesis, preventing a natural, moderate disturbance like historical fires equates to making disturbances too rare. The passage predicts that when disturbances are too rare, 'a few dominant species will outcompete all others.' This leads to a decrease, not an increase, in biodiversity. Therefore, the number of plant species would be expected to decrease over time.

Passage: In many cities, the number of people choosing to use bicycle-sharing services has increased dramatically. At the same time, despite the increase in cyclists, the rate of bicycle-related accidents has decreased. Which of the following, if true, would best help to resolve this apparent paradox?

Answer: Drivers have become more aware and cautious due to the increased visibility and number of cyclists on the road.

This statement resolves the paradox by introducing a causal link between the increase in cyclists and the decrease in accident rates. The 'safety in numbers' effect suggests that as drivers see more cyclists, they adapt their behavior, becoming more vigilant and accustomed to sharing the road, which in turn makes cycling safer for everyone and lowers the per-capita accident rate.

A political analyst argues: 'The rise of social media as a primary news source is detrimental to democracy because it allows for the rapid spread of misinformation and creates ideological echo chambers.' Which of the following statements, if true, would most seriously weaken the analyst's argument?

Answer: Social media platforms have enabled grassroots political movements and increased citizen engagement in political processes.

The analyst's argument focuses only on the negative aspects of social media's role in politics. This answer choice directly counters the claim that it is 'detrimental' by providing a significant positive impact—enabling grassroots movements and increasing engagement—which challenges the overall negative conclusion. While other options might be relevant, this one provides the strongest counterargument by highlighting a democratic benefit.