In Darley and Latané's simulated emergency experiment involving a student appearing to have a seizure, what specific factor did the researchers manipulate?

Based on the findings of Darley and Latané's simulated emergency experiment involving a student having a seizure over an intercom, rank the following social conditions in order of the likelihood that a participant would seek help, from the highest percentage of help (1) to the lowest percentage of help (3).

A psychologist is designing a new study to see if the findings of the Darley and Latané simulated emergency experiment apply to digital environments. In this new study, participants listen to a live audio feed of a classroom and hear a person in another room have a medical emergency. Match each experimental condition to the predicted behavioral outcome based on the findings of the original experiment.

In the Darley and Latané simulated emergency experiment, the methodological choice to isolate participants in separate rooms was intended to ensure that the observed decrease in helping behavior was caused by the participant's knowledge of other witnesses' presence, rather than by observing the inaction of those witnesses.

Suppose you are tasked with designing an extension of the Darley and Latané simulated emergency experiment to investigate whether 'prior interaction' between witnesses can mitigate the tendency for helping behavior to decrease (from $85\%$ to $31\%$) as more witnesses are added. To maintain the original study's methodological control for preventing witnesses from observing each other's non-verbal reactions, which of the following experimental plans would you construct?

In the Darley and Latané simulated emergency experiment, the percentage of participants who sought help decreased as the perceived number of witnesses increased.

In Darley and Latané's simulated emergency experiment, university students heard another 'student' experience a medical emergency over an intercom. Match each specific component of this experiment to its description or role in the study's research design.

When evaluating the methodological design of the Darley and Latané simulated emergency experiment, researchers note that isolating participants in separate rooms was intended to maximize _____ validity by ensuring that the results were caused by the perceived number of witnesses rather than the observed inaction of others.

In Darley and Latané's simulated emergency experiment, using a pre-recorded seizure instead of a live actor ensured that the _____ of the emergency stimulus was identical for participants across all three witness conditions, preventing any unintended variation in how the emergency was performed from confounding the results.

A student is evaluating whether Darley and Latané's experiment justifies the causal conclusion that perceived bystander number reduces helping behavior. Arrange the following evaluative steps in the order they should be completed, from the most foundational prerequisite check (1) to the final evaluative verdict (5).

Describe the design, experimental manipulation, and numerical results of the simulated emergency experiment conducted by Darley and Latané to test the bystander effect hypothesis.

Explain how the researchers operationalized their independent and dependent variables in this study, and explain the methodological purpose of isolating participants in individual rooms and using a pre-recorded voice for the emergency instead of a live actor.

A researcher replicates Darley and Latané's simulated emergency experiment with 200 participants in the condition where they believe they are the only witness, and 200 participants in the condition where they believe there are five other witnesses. Based on the percentages obtained in the original study, calculate the expected number of participants who would seek help in each of these two conditions. Show your calculations.