The library usually closes at 8 p.m., but this Friday it will close at 6 p.m. so that technicians can repair the heating system. Please collect any reserved books before then.
In a classroom study, one group reviewed a list of words for twenty minutes on one day. Another group reviewed the same list for five minutes on each of three days. After a week, the second group recalled more words.
Which conclusion is supported by the passage?
Everyone learns best in five minutes.
The group with spaced reviews recalled more words in this study.
The second group studied more difficult words.
Spaced reviews prevent people from ever forgetting words.