A(n) _____ hypothesis always specifies whether the posttest ...

[washai]

A(n) _____ hypothesis always specifies whether the posttest scores will be greater than or less than the pretest scores as a result of the treatment.
 
  a. a priori c. directional
  b. post hoc d. nondirectional

Question 2

The statement that delivering a small pulse of electricity to a specific area of the brain increases bar pressing is a _____ hypothesis.
 
  a. directional alternative c. null
  b. nondirectional alternative d. post hoc

[LegendaryAnswers]

Answer to Question 1

C
A directional hypothesis specifies the direction of the change from pretest to posttest.

Answer to Question 2

A
Directional alternative hypotheses specify the direction of change in the dependent measure from pretest to posttest that is caused by the treatment.