Skip to main content

NYT American dialect quiz as an example of validity and reliability.

TL:DR:

Ameri-centric teaching example ahead: Have your students take this quiz, and the internet will tell them which regions of the US talk the same as them. Use it to teach validity.

Longer Version:

The NYT created a gorgeous version (https://www.nytimes.com/interactive/2014/upshot/dialect-quiz-map.html) of a previously available quiz (http://www.tekstlab.uio.no/cambridge_survey/) that tells the user what version of American English they speak. The prediction is based upon loads and loads of survey data that studies how we talk. It takes you through 25 questions that ask you how you pronounce certain words and which regional words you use to describe certain things.

Here are my results:


Indeed, I spent elementary school in Northern Virginia, my adolescence in rural Central PA, college at PSU, and I now live in the far NW corner of PA. As this test indeed picked up on where I've lived and talked, I would say that this is a valid test based just on my usage.

How to use in class: Ask every student to take this quiz and reflect on the validity and reliability of the scale and use it as an example to explain validity and reliability. Here is how I used it:

Social but not educational benefit:
I asked my students to take the quiz before learning about validity in my I/O class. They enjoyed the quiz. Before class started that day, I could hear them discussing their results. Which entailed talking about where they grew up, where their parents grew up, where they spent that summer, etc. So, it was actually a fine "getting to know you" exercise for the first week of the semester.

Educational benefit: Use it to illustrate the 90 million different kinds of validity and reliability:

Content Validity: The test studied both pronunciations as well as different regional terms for the same thing (Water bubbler? Really, Wisconsin?). This demonstrates two dimensions of content for the way we talk: Accents or different ways to say the same word, as well as different words to say the same thing.
Criterion Related Validity: Did the quiz successfully guess where your student is from?
Face validity: This test is very high in face validity.
Predictive Validity: If this test was given to someone else, would it accurately measure where they are from? Do your students think that there are shifts in the way people talk as a society over time that would hurt the predictive validity? Like old people who say dungarees instead of jeans?
Convergent Validity: Do you think this test might also predict where your parents grew up? Or where your roommates or close friends grew up? Do you think it can predict where you live now or just where you grew up (for example, did I speak differently during my six years of graduate school in the Midwest? Does having a husband with a thick Long Island accent change how I talk now vs. how I spoke in high school).
Reliability: This test claims to measure where you are from.



Do you think that is true? Or does it test where you live now? Is this consistent overtime for a military brat who moves all over the world? Or someone who grew up in the South and then proceeds to New England?

I think it might be fun to discuss the discriminant validity of individual questions as well.  For instance, my use of the word "hoagie" to describe a specific kind of sandwich really pined me as a Pennsylvanian.



Comments

Popular posts from this blog

Ways to use funny meme scales in your stats classes

Have you ever heard of the theory that there are multiple people worldwide thinking about the same novel thing at the same time? It is the multiple discovery hypothesis of invention . Like, multiple great minds around the world were working on calculus at the same time. Well, I think a bunch of super-duper psychology professors were all thinking about scale memes and pedagogy at the same time. Clearly, this is just as impressive as calculus. Who were some of these great minds? 1) Dr.  Molly Metz maintains a curated list of hilarious "How you doing?" scales.  2) Dr. Esther Lindenström posted about using these scales as student check-ins. 3) I was working on a blog post about using such scales to teach the basics of variables.  So, I decided to create a post about three ways to use these scales in your stats classes:  1) Teaching the basics of variables. 2) Nominal vs. ordinal scales.  3) Daily check-in with your students.  1. Teach your students the basics...

Using pulse rates to determine the scariest of scary movies

  The Science of Scare project, conducted by MoneySuperMarket.com, recorded heart rates in participants watching fifty horror movies to determine the scariest of scary movies. Below is a screenshot of the original variables and data for 12 of the 50 movies provided by MoneySuperMarket.com: https://www.moneysupermarket.com/broadband/features/science-of-scare/ https://www.moneysupermarket.com/broadband/features/science-of-scare/ Here is my version of the data in Excel format . It includes the original data plus four additional columns (so you can run more analyses on the data): -Year of Release -Rotten Tomato rating -Does this movie have a sequel (yes or no)? -Is this movie a sequel (yes or no)? Here are some ways you could use this in class: 1. Correlation : Rotten Tomato rating does not correlate with the overall scare score ( r = 0.13, p = 0.36).   2. Within-subject research design : Baseline, average, and maximum heart rates are reported for each film.   3. ...

Andy Field's Statistics Hell

Andy Field is a psychologist, statistician, and author. He created a funny, Dante's Inferno-themed  web site that contains everything you ever wanted to know about statistics. I know, I know, you're thinking, "Not another Dante's Inferno themed statistics web site!". But give this one a try. Property of Andy Field. I certainly can't take credit for this. Some highlights: 1) The aesthetic is priceless. For example, his intermediate statistics page begins with the introduction, "You will experience the bowel-evacuating effect of multiple regression, the bone-splintering power of ANOVA and the nose-hair pulling torment of factor analysis. Can you cope: I think not, mortal filth. Be warned, your brain will be placed in a jar of cerebral fluid and I will toy with it at my leisure." 2) It is all free. Including worksheets, data, etc. How amazing and generous. And, if you are feeling generous and feel the need to compensate him for the website, ...