In a research study, when the subjects do not know who is in the experimental group and who is in the control group, but the experimenters do know, the study is called a(n) experiment

Which statement best summarizes research on test delivery?

A) Students who used pencil-and-paper tests outperformed those who used handheld computers. B) Students who used paper-and-pencil tests outperformed those who used notebook computers. C) Students who used any type of computer outscored those who used paper-and-pencil tests. D) There are no meaningful differences between students who take their tests using a computer and those who take it using pencil and paper.

The Yerkes-Dodson law describes an inverted U-shaped relationship between _____ and _____

A) arousal; intelligence B) intelligence; performance C) arousal; performance Correct. The Yerkes-Dodson law suggests that at moderate levels of arousal, we tend to have our best performance. D) intelligence; motivation