A psychologist manipulates the type of instructions participants ...

[cmoore54]

A psychologist manipulates the type of instructions participants are given when performing a task.
 
  One group of participants is told their performance on a task is affected only by chance, whereas a second group of participants is told their performance on the task relates to their ability levels. The research method used by this psychologist is called ______ .
   a. experimentation
  b. naturalistic observation
  c. quasi-experimentation
  d. archival records research

Question 2

In a histogram, the _____ is represented by the width of the bar on the abscissa.
 
  a. size of the class interval
  b. relative frequency of the interval
  c. percentage frequency
  d. lower stated limit and the upper real limit

[SeanoH09]

Answer to Question 1

A

Answer to Question 2

A

[cmoore54]

Thank you

[SeanoH09]

No problem