PSY 2500: Introduction to Research Methods in Psychology

Learning Activity Chapter 12

Factorial Designs

Consumer tasting survey:Consumers (children and adults) tasted two cooking methods of popcorn (microwave and regular stove-top) in two flavors (butter and cheese).

Butter	Children	Adults
Microwave	8.0	6.5
Regular	8.2	3.5

Cheese	Children	Adults
Microwave	3.0	3.0
Regular	9.5	9.5

Graph the above data:

Calculate the main effects:

Children
Adults

Butter
Cheese

Microwave
Regular

Calculate two-way interactions:

Explain if there is a three-way interaction.