Linear Mixed Effects Analyses Tutorial (in R)

One of my datasets requires mixed models linear regression analyses, so I was reading up on exactly how the analyses are done and what they mean. Found this useful-looking tutorial that walks through several examples of the mixed effects, as well as how to do it in R.

Here’s a graph of individual subjects, grouped by gender, and the distribution of their voice pitch.

Pitch of male and female voices

Pitch of male and female voices

To take into account the individual variation in each subject’s voice pitch, run pitch ~ politeness + sex + (1 | subject) + error, where (1 | subject) indicates the assumption that the intercept is different for each subject.

PS. I love box plots!

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s