The Data Center at the Guttmacher Institute is focused on providing information on the state, national, and international level related to reproductive and sexual health. Background The Data Center is
In randomized controlled trials (RCTs), treatment is often assigned by stratified randomization. I show that among all stratified randomization schemes which treat all units with probability one half,
This is raw data showing chimpanzee token choices in a token-reward task. Sheet 1 is the Experimental Groups with choices in each trial. Sheet 2 is the overall choices for the Control Group.
