If participants get tired because the testing session is too ...

[Brittanyd9008]

If participants get tired because the testing session is too long, that fatigue is considered to be a _____ effect.
 
  a. treatment c. testing
  b. history d. maturation

Question 2

The null hypothesis in a pretest posttest experiment states that feedback does not improve performance. The correct alternative hypothesis for this experiment is _____.
 
  a. feedback affects performance c. feedback reduces performance
  b. feedback improves performance d. any of these

[Zebsrer]

Answer to Question 1

D
Fatigue is an internal change that occurs because of the passage of time.

Answer to Question 2

B
When the null hypothesis is directional, the alternative hypothesis should be directional and in the same direction.

[Brittanyd9008]

Thanks for the timely response, appreciate it

[kishoreddi]

Gracias!