You have a group of male high school math teachers with high ...

[luminitza]

You have a group of male high school math teachers with high scores on authoritarianism and you want to investigate the influence of authoritarianism on students' attitudes toward math. What kind of a comparison group would you choose to provide the most control in this study?
 
  a. a group of high school teachers with low scores on authoritarianism
  b. a group of high school math teachers with low scores on authoritarianism
  c. a group of male high school math teachers with low scores on authoritarianism

Question 2

Identify the threats to internal validity illustrated in the examples below. Students falling below the 10th percentile on a reading achievement test later receive higher scores on a similar test; students above the 90th percentile receive lower scores on the second test administration.
 
  a. experimental mortality
  b. reactive effect of testing
  c. statistical regression
  d. maturation
  e. instrumentation

[Bsand8]

Answer to Question 1

C

Answer to Question 2

C

[luminitza]

Excellent

[tranoy]

Gracias!