Repeated Measures ANOVA

Question 1

Repeated Measures ANOVA

Answer 1

• All subjects tested under x number of treatment conditions
• Called within subject design
• More Powerful

Question 2

What is the advantage?

Answer 2

• Individual differences are controlled
• Tx differences and error variance will account for group differences

Question 3

Why is this better?

Answer 3

• Repeated measures are taken therefore error variance analysis is smaller than randomized experiment
• Reduces the size of the error term in ANOVA resulting in a larger F ratio
• Less variation = More powerful test!

Question 4

Single Factor Repeated Measures Design

Answer 4

one IV, all levels of treatment applied to all subjects.

Example: What are the differences in isometric elbow strength with the forearm in 3 positions: pronation, neutral, and supination.

Question 5

What is wash out?

Answer 5

Randomization of the order of treatments applied to account for fatigue and habituation

Question 6

Multifactor Repeated Measures Design

Answer 6

Can be:
* 2 Way Within Subject/Factor
* 2 Way Mixed Design/Factor (One between, one within)