A researcher is exploring possible reasons for some children ...

[Evvie72]

A researcher is exploring possible reasons for some children being put into gifted programs and other children not being entered into gifted programs. This study is ex post facto because the
 
  a. subjects are already known to differ on the dependent variable.
  b. subjects are already known to differ on the independent variable.
  c. a and b.
  d. None of these are true.

Question 2

A researcher plans a special series of classroom lessons designed to increase students' verbal skills. A control group does not have the lessons. Which of the following would most likely be threats to internal validity?
 
  a. History
  b. Hawthorne effect
  c. Teacher expectations effect
  d. Mortality
  e. b and c

[ktidd]

Answer to Question 1

A

Answer to Question 2

E

[Evvie72]

TYSM

[JCABRERA33]

Thanks for the timely response, appreciate it