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School

University of Guelph
Department

Family Relations and Human Development

Course Code

FRHD 3070

Professor

Hendry

1. Week 9 – Factorial Designs

Research Design Types

-Single factor (one-way)

oStudies one independent variable

-Multi-factor

oStudies multiple independent variables

May have several levels

oExamples:

Two-way (e.g. 2 x 2)

Three-way (e.g. 2 x 2 x 2)

Factorial Designs

-Factorial designs use a specific number system

oThe number of numbers tells you how many IVs there are

oThe number values tell you how many levels

oE.g. in 3 x 4 factorial design, you would know that we had 2 IVs and that one IV

had 3 levels while the other had 4

Note that the order of the numbers makes no difference

oThe number of different treatment groups in any factorial design can be

determined by multiplying through the number notation

oi.e. 3 x 4 = 12 groups

-Defined

o A research design that uses more than one independent variable

-3 types of factorial designs

oBetween Participants

oWithin Participants

oMixed Participants

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