Vocabulary Quiz Chp 2.

The small group of participants, out of the total number available, that a researcher studies. 

• Sample
• Demographic
• Cohort
• Population

Research method in which the psychologist observes the subject in a natural setting without interfering. 

• Case study
• Controlled experiment
• Survey method
• Naturalistic observation

research method that involves an intensive investigation of one or more participants. 

• Observation
• Experiment
• Case study
• Survey

research method in which information is obtained by asking many individuals a fixed set of questions.  

Research method in which data is collected about a group of participants over a number of years to assess how certain characteristics change or remain the same during development. 

• Cross-sectional study
• Case study
• Longitudinal study
• Experimental study

Research method in which data is collected from groups of participants of different ages and compared so that conclusions can be drawn about differences due to age. 

The measure of a relationship between two variables or sets of data. 

• causation
• association
• correlation
• relationship strength

An educated guess about the relationship between two variables.

Any factor that is capable of change. 

• Variable
• Fixed
• Static
• Constant

The group to which an independent variable is applied. 

• Experimental group
• Control group
• Dependent variable
• Sample population