In the _____ procedure, participants attend to a central task, ...

[sheilaspns]

In the _____ procedure, participants attend to a central task, but also have to complete a peripheral task.
 
  A) figure-ground
  B) task demand
  C) dual-task
  D) discrimination

Question 2

A disadvantage of experimental research designs is that
 
  a. there are some things that can cannot be experimentally manipulated.
  b. they are often conducted in schools and institutions.
  c. causal relationships are difficult to determine.
  d. they use a measured dependent variable.

[sultana.d]

Answer to Question 1

C

Answer to Question 2

a

[sheilaspns]

Excellent

[amcvicar]

Thanks for the timely response, appreciate it