GRE Logical Reading: ETS-GRE逻辑单题ETS - CE7FW66DOE9T56U9K$

In an attempt to reduce misbehavior, the junior high school principal has decided to make punishments stricter, including prohibiting unruly students from having playtime outdoors. However, this action is clearly counter to the principal's goals, as studies have shown that students who frequently play outdoors are also less likely to misbehave.