explain sampling techniques appropriate to research

What is opportunity sampling?

It’s easily available and requires willing to participate participants. It’s cheap and easy to obtain. The people in the study are not different in phenomenon.

What is the aim of the Piliavin and Rodin study?

To carry out a field experiment studying how situational factors influence prosocial behavior

What was the procedure?

Conducted during the day on a New York City subway, where male actors pretended to collapse after 70 seconds of traveling, acting ill with a cane or drunk. Two female observers recorded how quickly passenger stepped into help based on the victims form of helping behavior.

What were the results?

It took longer to help the drunk man over the ill man

How is it connected to the target

Opportunity sampling because the researchers used passengers that happen to be on the subway during the experiment. So people who were available rather than a general population.