1. What is the negative effect of using iPads or other tablet devices just before going to bed, according to research done at Rensselaer Polytechnic Institute's Lighting Research Center?

2.  Why do these portable devices have this effect on sleep? Be specific.

3.  What recommendations do the Lighting Center's researchers make for avoiding the negative effects of tablet use?

4. What have neurologists known for years would cause a disrupted night's sleep?

5.  a) Define validity.
b)  What do you think of the validity of this study?  Explain your answer.

6.  If you were a person who didn't sleep well, would you try limiting your use of tablet devices at bedtime?  Why or why not?

CHALLENGE QUESTION:  Conduct your own study.  If you don't use a tablet or smart phone at night, ask a parent, relative or friend who does.  Ask the user to try eliminating the use of tablet devices before bedtime for a few days, and to see if this improves his/her sleep.