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2.You now know we consider both main effects and interactions in factorial designs. I hope that...

2.You now know we consider both main effects and interactions in factorial designs. I hope that it is apparent that we also have a hypothesis (and null hypothesis) for each main effect as well as the interaction. Think about a 2 X 2 design. For this Pause Problem, first describe any study (made up or a real one) that has a 2 X 2 design (just don’t use the one from your lab!), and then write out the three null hypotheses (one for Factor A, one for Factor B, and the interaction of Factors A and B!

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Answer #1

Study that has a 2 X 2 design:

Independent Variables:

2 (Participant: Male & Female) X 2 (Dress condition: Traditional & Modern) ;

Dependent Variable:

Attitude towars marriage.

Three Null Hypothesis:

(1) Null Hypothesis on the effect of Factor A;

Gender of the participant (Male or female) has no effect on Attitude towards marriage

(2) Null Hypothesis on the effect of Factor B;

Dress code of the participant (Traditional Or Modern) has no effect on Attidude towards marriage

(3) Null Hypothesis on the effect of Interaction of Factors A and B:

Gender of the participant and Dress code of the participant are independent.

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