1. Stat 217 – Day 23
Lab 5

2. Reminder
Mid-course feedback form
Final Exam options

3. Lab 5 – Sleep Deprivation
“Sleep is required for memory consolidation - the process by which experience or training is transformed into improvements in performance.”

4. Visual Discrimination Tasks

5. Stickgold, James, Hobson (2000)
Investigated whether you can make up for a missed night’s sleep
60-90 minute training sessoin
Group A: Sleep deprived one night, unrestricted sleep 2 nights
Group B: Unrestricted sleep all 3 nights
Retested after 72 hours

6. Statistical Significance
Before we mixed up the blue and green cards and counted the number of successes randomly assigned to group A
Now
Assume everyone would get same score regardless of which treatment they received (null hypothesis)
Put numerical score on each card
Mix them up and deal them out (to represent the random chance in random assignment)
See how often we observed a difference in means at least as large as the actual study