Daniel Kahneman- the psychologist who won an Nobel Prize for Economics- has uses a concept of "What You See Is All There Is"- which states that humans tend to form impressions based purely on the information available to us, even when that information is very minimal. We do not stop to consider what important information may be missing.
I think the reaction to the nurse who killed herself after receiving a prank phone call from an Australian radio station is an example of this. All the public "know" about her are that she received the call and she killed herself therefore the assumption is that the phone call led to her death.
This may be right but given that it seems such an odd reaction to the prank call and that people have all sorts of relationships and ambitions that are far more likely to affect their well being that a two minute radio call, it seems unwise to assume that her apparent suicide was related to the prank without knowing more about her life.