Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
This graph shows the time ratio of looking at the matching sized picture of dogs in each group. The horizontal line at 0.5 represents random choice when dogs show no preference. The area above the line represents preference towards the matching sized picture. The boxplots shows the median, interquartiles and outliers.
