Statistical regression refers to the tendency of extreme scores to ____ the common mean on ...

Statistical regression refers to the tendency of extreme scores to ____ the common mean on subsequent measurement.
 
  a. move toward c. stay the same distance from
  b. move away from d. move randomly toward or away from

Ques. 2

Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. The proportion of children taught reading through a whole-language approach who will choose to read during free periods will be greater than the proportion of those taught reading through a basal reader approach.
 
  a. necessarily ex post facto research b. possible to do with experimental research

Ques. 3

The type of control problem that can occur when volunteers are compared with nonvolunteers is
 
  a. history.
  b. pretesting.
  c. regression.
  d. posttesting.
  e. selection-maturation interaction.

Ques. 4

Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. Parents' divorce has an influence on the achievement motivation of the children involved.
 
  a. necessarily ex post facto research b. possible to do with experimental research

Ques. 5

When a researcher is confident that results can be attributed to a treatment's influence and nothing else, it is said that the study is ____ valid.
 
  a. externally
  b. empirically
  c. intrinsically
  d. internally
  e. statistically

Ques. 6

Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. Using a physical touch while giving feedback to mentally disabled children is more effective than verbal feedback alone.
 
  a. necessarily ex post facto research b. possible to do with experimental research

Ques. 7

The most powerful control technique, given the number of influences potentially controlled, is
 
  a. matching. c. counterbalancing.
  b. random assignment. d. homogeneous selection.

Ques. 8

Indicate whether the following hypotheses are necessarily ex post facto research or possible to perform with experimental research. Black and white computer graphics produce less eyestrain for visually impaired persons than do color monitors.
 
  a. necessarily ex post facto research b. possible to do with experimental research