A questionair that asks people to report their behavior or opinions.
What is survey?
100
A graphed cluster of dots, each of which represents the values of two variables. The slope of the points suggests the direction of the relationship between the two variables.
What is scatter plot?
100
The difference between the highest and lowest scores in a distribution.
What is range?
100
A group in an experiment that does not receive the independent variable in an experiment.
What is control group?
200
A research method in which an investigator manipulates one or more factors.
What is experiment?
200
All the people in a group being studied.
What is population?
200
A measure of the extent to which two factors vary together, and thus of how well either factor predicts the other.
What is correlation?
200
The manipulated variable in an experiment.
What is independant variable?
200
The group in an experiment being subjected to the experiment.
What is experimental group?
300
Repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding extends to other participants and circumstances.
What is replicate?
300
A sample that fairly represents a population because each member has an equal chance of inclusion.
What is random sample?
300
A statistical statement of how likely it is that an obtained result occurred by chance.
What is statistical significance?
300
Something that relies on the independent variable in an experiment and can change when the independent variable is applied.
What is dependant variable?
300
An experimental result caused by expectations alone; any effect on behavior that is caused by the administration of an inert substance or condition, which the recipient assumes is an active agent.
What is placebo effect?
400
A statement of procedures used to define research.
What is Operational Definition?
400
An observation technique in which one person is studied in depth in the hope of revealing universal principles.
What is case study?
400
The perception of a relationship between data when none exist.
What is illusory correlation?
400
A symmetrical, bell-shaped curve that describes the distribution of many types of data; most scores fall near the mean, or average, and fewer and fewer near the extremes.
What is normal curve?
400
Assigning participants to experimental and control groups by chance, thus minimizing preexisting differences between those aligned to the different groups.
What is random assignment?
500
Explains things through an integrated set of principles and organizes observations and predicts behaviors or events.
What is Scientific Theory?
500
Observing and recording behavior in naturally occurring situations without trying to manipulate and control the situation.
What are naturalistic observations?
500
A statistical index of the relationship between two things (from −1 to +1).
What is correlation coefficient?
500
A computed measure of how much scores vary around the mean score.
What is standard deviation?
500
An experimental procedure in which neither the subjects of the experiment nor the persons administering the experiment know the critical aspects of the experiment.