Types of Experiments Flashcards
Independent groups experiments examine what?
between group differences
The IV has multiple groups, which are?
The experimental and control groups, and there is separate groups of participants for each level of IV
Differences within groups can be accounted to what?
individual differences or error
What are some benefits of random groups?
balances out individual differences
not assigned by participants or alternating assignments
What kind of group do you use if you have a smaller sample and randomization won’t work well?
Matched groups
What are some relevant variables that should be included when matching groups
The DV
Factors related to DV
An important potential confound
What are some disadvantages to natural groups?
Not a true experiment
Natural groups may differ systematically
Can’t make causal statements when comparing natural groups
Natural groups limit what?
causal inferences
What is power?
The power of any test of statistical significance is the probability that it will reject a false null hypothesis. Statistical power is inversely related the probability of making a Type II error.
