Psychologists come up with research questions based on
One method that helps researchers gather information from many people is
To ensure that a sample represents a target population, researchers select
Men have traditionally taken part in psychological studies more often than women because
The testing method of observation investigates human behavior through
The case-study method of observation was practiced by
Scientists are cautious about making generalizations from case studies because
The longitudinal method is concerned with observing
The greatest drawback of the longitudinal method is that participants in the study
The cross-sectional method charts changes over time by
Observing the way people eat in restaurants is an example of
"Skinner boxes" are examples of
After making their observations, scientists study their data using
In an experiment, it is useful to have a control group to
A placebo is often as effective as taking a medication because
A double-blind study is sometimes needed because researchers
Psychologists keep the records of their research participants confidential to
According to the American Psychological Association, psychologists can deceive participants in an experiment
Scientists sometimes replicate a study using different participants in order to
Most human experiments do not include children because