What can be done to minimize the effects of selection in ...

[mia]

What can be done to minimize the effects of selection in experiments that have only one group?
 
  a. make the study easier to complete
  b. compare the subjects to a group that is their own age and stage of development
  c. measure the subjects on several variables whose norms are known
  d. start with a larger group so that drop-outs are not a problem

Question 2

In a study of caloric intake on weight loss, the number of pounds lost (or gained) is the independent variable.
 
  Indicate whether the statement is true or false

[ryansturges]

Answer to Question 1

C
By measuring several variables in the subjects, the researcher will know what kind of subjects the treatment works for (assuming the treatment is successful).

Answer to Question 2

F

[mia]

TYSM

[billybob123]

Gracias!