Although many of Hillsdale's students came from wealthy households, by the late 1990s average test scores were sliding and it had earned the unaffectionate nickname "Hillsjail".
To test prosimian social learning abilities, Stoinski and her team built a snack-filled tube with two different ways to open it -a hinged door and a sliding door.
To test prosimian social learning abilities, Stoinski and her team built a snack-filled tube with two different ways to open it — a hinged door and a sliding door.