Power & effect sizes

Here is the power and effect size material I mentioned in class. It will really help you answer the test questions we prepped in class and capture the ideas more effectively.

Statistical power analysis.

Online power calculators: many. Here is a useful one. Many more though. You can use them to calculate power or to calculate the sample size you will need given your estimate of power.Unknown

Effect size
Super important idea. Read up online.
Here is great paper why it matters!
Why most published research findings are false.


Lab next week: SHARK TANK.

Hey designers,

Next week is our first week in the field where you’ll all get a chance to pick out locations for your studies and pilot you experiments!

BUT, before we head into the field we’re going to have a mini-shark tank session in lab. Each group should prepare a brief, informal presentation that outlines:

  1. Your major research questions
  2. Dependent and Independent variables/factors to be tested
  3. Locations you plan to use
  4. Any other ideas you want to bounce off of the class

Dr. Lortie and I will be there to listen to your proposals and troubleshoot any problems you may encounter!

PS. Your OSF.io groups SHOULD all be set up. If you have not received an email about this, please let me know and I will re-add you. There was one email it appeared to be rejecting.

See you all next week!


Labs start Thursday!

Hello designers!

This is just a quick post to remind you all that labs start this Thursday at 2:30 PM. There is only one lab section for the course, so I hope to see you all there! FYI, the lab room has been CHANGED TO Lumbers Room 128.

This first lab will just be an intro for you all on the basics of experimental design. You will learn a few different techniques for conveying your designs to others, including how to sketch out an idea, and how to produce directed acyclic graphs (DAGs).

As I mentioned in the first lecture, all data you collect for both your experiment, and your systematic reviews later in the term will be published in an online, open-access repository called FigShare (www.figshare.com). I will go though a tutorial on how to use it and what makes a good data sheet in the first lab. If you want to get ahead of the game, feel free to make an account and get a feel for the website ahead of time.

See you all Thursday!



Welcome to experimental design: lecture but NO labs first week of term

Welcome to experimental design.



The primary purpose of this course is to provide you with useful instruction on how to design experiments AND give you a chance to dive deep into a research topic of your choice in doing so!

Everything you need is here on the blog.

Here are the critical innovations in this course that were intended to  make your life better.

  1. This blog. Everything here, updated weekly.
  2. Only ONE lecture test and no final exam.
  3. All other evaluation tools designed to give you set of useful products you care about.





unofficial blog for experimental design @yorku