Untimed participants who were given the hard goal spent 33% more time working on the questions than those who were given the easy goal, and 57% more time than those who were just told to do their best.

在不限时答题组中，那些目标定低者相比，目标定高人在答题上花费时要多33%，而比仅需要“力而为”人则多57%。

Still, the researchers found that this unconscious exposure to fast food symbols ramped up participants' reading speeds by 17 percent, even though the reading test was untimed.

管如此，研究人员发现，这种无意识地暴露在快餐符号下阅读速度提高了17%，即使阅读测试是不定时。

They were also split into a timed group and an untimed one.

他们还被分成了限时答题组和不限时答题组。