Give me three real-world examples of statistical interactions. For example, I wrote about toothpaste and orange juice. I want examples like that. Describe the phenomenon and tell me why it's a statistical interaction.
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Assignment 14:
I want you to brainstorm a few designs. Give a brief paragraph on each of your designs.

3 X 3 design
2 X 3 X 2 design
3 X 3 X 4 X 2 design
Just make up a goofy study if you can't come up with something LER related. I'm looking to see whether you understand the structure of these statements, not to see whether you can generate really awesome studies on the fly.

Seriously. Be goofy if you want.
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Assignment 15:
Come up with two mini experimental designs: one that features “practice” effects and one that features “fatigue” effects.

Describe how the order effects could potentially interfere with your design.

Describe your counterbalancing scheme.

If you feel adventurous, you can design experiments with more than two conditions, but I'm primarily interested in seeing that you understand the concepts than in seeing you come up with fancy designs. :)
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Assignment 16:
Alright, so suppose you were truly interested in gender effects on leadership effectiveness.

Brainstorm for me a way to actually assess leadership effectiveness and gender. I don't want to give you any hints, because I want to see what you come up with!

Be creative, think critically, consider the sorts of resources available, but remember to be ethical. That means no forced gender re-alignment surgeries or anything of the sort.