Experimental Design Flashcards
What is the dependent variable (DV)?
The variable that is being measured & recorded
What is the independent variable (IV)?
The variable that is being manipulated by the experimenter
In a within-subjects design:
Each participant experiences EVERY level of the IV/manipulated variable
In a between-subjects design:
Each participant only experiences ONE level of the IV/manipulated variable
In a mixed design, one IV is within-subjects and the other IV is between-subjects. True or false?
True
How is bias avoided when using a mixed design?
Through the random assignment of participants to conditions
If a study produces various levels of the IV, and aims to investigate the effect of all combinations of this IV, then it is a _________ study
Factorial design
Extraneous variables that remain consistent throughout an experiment are also known as _____
Controls
What 3 variables are particularly important to control in an experiment?
Participants, materials & demand characteristics
What is the benefit of random sampling?
There is no biased selection of members
A sample must be ____ of its population:
Representative
What is the main difference between a quasi and a true experiment?
Quasi experiments do not use randomisation
Subject variables are factors that are not _______
Directly manipulated
If the experiment is quasi with a subject variable IV, then results can be _____ but not _____
Predicted; explained
What can quasi experiments NOT do?
Conclude a causal relationship between the IV and results
