If necessary, measurement systems can be changed during the ...

[jerry coleman]

If necessary, measurement systems can be changed during the implementation of the intervention.
 
  Indicate whether the statement is true or false

Question 2

The measurement used to monitor the student must always be the same as the method used during baseline and when the intervention was tested.
 
  Indicate whether the statement is true or false

[mjbamaung]

Answer to Question 1

False. If you change from one measurement system to another in midstream it is impossible to obtain accurate information regarding the effect of the intervention.

Answer to Question 2

False. It is sometimes okay to make a shift, however, the shift must be to a compatible measurement system that provides compatible data  for example one would not shift from time based to event based.

[jerry coleman]

Thanks for the timely response, appreciate it

[sultana.d]

Gracias!