Description:

I'm serious about the one-page limit for this one!

1. Invent a true experiment that has in it an independent variable, dependent variable, extraneous variable, and confounding variable.

2. Briefly (in one paragraph), describe the experiment. Begin your description this way: "An experiment was conducted to examine the effects of ________ on ___________ ." (Note: the blanks could be one word or more than one word.) In the remainder of the description, say who the subjects were, and then give a very brief summary of the procedure. Be sure your description includes each of the four items listed above.

3. Fill in the following sentences at the bottom of your page:

The IV is:

The DV is:

The extraneous variable is:

The confounding variable is:

A threat to internal validity is:

A threat to external validity is:

4. Print out and bring to class TWO copies of this homework. One copy will be turned in. The second copy will be used for class discussion.

dw9/24/03