True experiments


Distinguish between experimental and non-experimental research.

Give examples of non-experimental types of research and be able to explain why they are not experimental.

Distinguish between observing and manipulating independent variables.

Give examples of manipulating variables.

Explain how to convert a non-experimental study into an experimental one, and explain the consequences, both negative and positive, of doing so.

Describe the advantages and disadvantages of non-experimental and experimental research.

Distinguish between correlation and causation, and be able to explain how they are related.

Explain what a control group or control condition is and explain its significance for experimental research.

Define a factor and a condition, and explain how they are related to variables and values.

Explain what an effect is.

Distinguish between an experimental effect in the data and a true effect.

Explain the significance of the idea of inference in interpreting true effects from experimental effects.

Describe the various means of statistically analyzing data from one factor experiments.

Correctly interpret t-tests and F tests.

Distinguish between a main effect and a simple effect.

Explain the relationship between nuisance variables and the interpretation of ANOVA or a t-test.

Explain the concept of random assignment as opposed to random selection.

Explain the implications of random assignment for statistical analysis.