I hope you enjoyed the humor study. Here is some additional information about the study in case you want to use it with your students. Click here if you'd like to share the study with others.
The study was created using Google Sites, Forms and Spreadsheets (all free tools). Here's the flow of the experiment:
The Independent variable here is age since the respondents were split into two groups by age. Remember to point out to your students that this is not a true independent variable, since we did not randomly assign respondents to their age.
The dependent variable is the ratings given to the two jokes on the 1-10 scales.
The dependent variable is an ordinal scale.
Since we separated respondents by whether they were above or below 30, we don't know much about their true age. One person who was 29 could wind up in one group while her friend who is 30 would wind up in another. So this is perhaps not the best way to define "older" from "younger" people.
Since the study is conducted online (unless you have students do this on their computers/phones while in class), we have no control over the physical surroundings while respondents participated. Among of noise in the room is uncontrolled and possibly a factor in the ratings.
Did participants actually read the jokes? Since the study is conducted online, you really don’t know how seriously participants engaged in the study. Did they carefully read the instructions and the jokes - or did they just pick any number and click submit?
We hope you find this study useful in your classes. If you'd like a copy of the files used in this study for your own use, feel free to get in touch with Michael Britt: email@example.com.