Practice up, exam down

One field experiment, school students [E21]

Standard chat assistant
Practice: up, sharply. Then the assistant is taken away. Exam: 17% lower than students who never had it.
Hint-giving version
Hints, not answers. Exam: largely avoided the drop.
Never had it
The comparison group.

The only figure shown is the study's 17%; no practice figure is given.

Practice up, exam down Practice up, exam down One field experiment, school students [E21] Practice Exam Exam, assistant taken away Bar lengths are schematic: the only figure shown is the study's 17%. No practice figure is given.