Unit 1Unit 1Chapter 2Chapter 2Section2Section2

Problems and Solutions in Problems and Solutions in ResearchResearch

Mr.YoungMr.Young

Self-FulfillingSelf-Fulfilling Prophecy Prophecy• A situation in which

a researcher’s expectations influence that person’s own behavior, and thereby influence the participants behavior

Avoiding Avoiding Self-fulfilling prophecySelf-fulfilling prophecy

• Two different experiments

1. Single-blind experiment-

2. Double-Blind Experiment

Single-Blind ExperimentSingle-Blind Experiment• An experiment in

which the participants are unaware of which participants received the treatment

Double-Blind ExperimentDouble-Blind Experiment• an experiment in

which neither the experimenter nor the participants know which participants received which treatment

The Milgram ExperimentThe Milgram Experiment• Wanted to see if people would

administer shock just because an authority figure was present

• Perfect example of a single-blind experiment because the participants were unaware that they were not administering a shock

The PlaceboThe Placebo Effect Effect• A change in a

participant’s illness or behavior that results from a belief that the treatment will have an effect rather than from the actual treatment

Placebo Effect in ActionPlacebo Effect in Action• http://

www.youtube.com/embed/H9C8al3rWDQ

Single-Blind ExperimentSingle-Blind ExperimentExperimental GroupExperimental Group

The Real DrugsThe Real Drugs

Placebo GroupPlacebo Group

Sugar Pills (Yeah)Sugar Pills (Yeah)