1 IV with 2 levels.  Between Groups Design

Example:

IV = Color of paper (Blue vs. White)

DV = Test Score

Subjects are given a test on either blue or white paper.

Independent Groups t-test

Assignment #4

1 IV with 2 levels.  Repeated Measures (Within Subjects) Design

Example:

IV = Brand of Cola (Coke vs. Pepsi)

DV = Taste rating

Each subjects drinks both colas and rates each.

Note:  Counterbalancing is necessary in this design

Paired Samples (Within Subjects)  t-test

Assignment #5

1 IV with 3 or more  levels.

Between Groups Design

Example:

IV = Color of paper (Blue vs. White vs. Red)

DV = Test Score

Subjects are given a test on either blue, white, or red paper.

Independent Samples (Between Groups) ANOVA

Assignment #6

1 IV with 3 or more  levels.

Repeated Measures (Within Subjects) Design

Example:

IV = Brand of Cola (Coke vs. Pepsi vs. Generic)

DV = Taste rating

Each subjects drinks each of the three colas and rates each one.

Note: Counterbalancing is necessary in this design

Repeated Measures (Within Subjects)

One-Way ANOVA

Assignment #7

2 IVs

Between Groups Factorial Design

Example:

IV#1 = Pratfall (No Spill vs. Spill on Desk vs. Spill on Shirt)

IV#2 = Attractiveness of Candidate (High vs. Low)

DV = Impression of Candidate

Each subject sees one video in which a candidate for a teaching position who is either high or low in attractiveness, sips a cup of coffee and either does not spill it, spills it on the desk, or spills it on his shirt.

2-Way Between Groups ANOVA

Assignment #11

2 IVs

Mixed Factorial Design

Example:

IV#1 (Repeated Measures) =  Illusion (Necker vs. Goblet/Faces

vs. Double/Helix)

IV#2 (Between Groups) = Sex of Subject (Male vs. Female)

DV = Number of perceived reversals/minute

Subjects are categorized according to sex.  Each subject views three bistable illusions, and records the number of reversals seen in each.

Note:  Counterbalancing is necessary in this design

2-Way Mixed ANOVA

Assignment #12

2 IVs

Fully Repeated Measures Design

Example:

IV#1 (Repeated Measures) =  Illusion (Necker vs. Goblet/Faces

vs. Double/Helix)

IV#2 (Repeated Measures) = Instructions (Try to see vs. Suppress seeing)

DV = Number of perceived reversals/minute

Each subject views three bistable illusions two times (for a total of six viewings): once under instructions to see as many reversals as possible, and once under instructions to suppress seeing reversals.

Note:  Counterbalancing is necessary in this design

2-Way Fully Repeated Measures ANOVA

See Dr. Gilbert